Celestine N. Mercer Albert H. Hofstra 20201117 2.0 tabular digital data Denver, CO U.S. Geological Survey Additional information about Originator: Mercer, C.M., https://orcid.org/0000-0001-8359-4147; Hofstra, A.H., https://orcid.org/0000-0002-2450-1593 Suggested citation: Mercer, C.N., and Hofstra, A.H., 2020, Melt inclusion and mineral geochemical analyses supporting the evaluation of petrogenesis, degassing, and metallogenic potential of mid-Cenozoic rhyolite magmas in northern Nevada, USA (Version 2.0, March 2025): U.S. Geological Survey data release, https://doi.org/10.5066/P9UWAW28. https://doi.org/10.5066/P9UWAW28 This data release presents geochemical analyses of silicate melt inclusions, host quartz phenocrysts, and biotite phenocrysts in samples collected by the U.S. Geological Survey (USGS) from mid-Cenozoic rhyolitic rocks from northern Nevada. Igneous intrusions and volcanic rocks in this study encompass nineteen rhyolitic samples from five magmatic centers across northeastern Nevada. Rhyolites were emplaced throughout northeastern Nevada over about an 8 million year timespan (41–33 mega-annum) in a variety of eruptive styles and volumes, ranging from meter-wide dikes to caldera-forming ignimbrites, and were roughly contemporaneous with regional ore deposition. Samples were prepared for petrographic and scanning electron microscope (SEM) analysis, as well as analysis by electron microprobe (EMP), Fourier transform infrared (FTIR) spectroscopy, laser-ablation inductively coupled plasma mass spectrometry (LA-ICP-MS), and sensitive high-resolution ion microprobe-reverse geometry (SHRIMP-RG). See Process Steps in the metadata for detailed descriptions of analytic procedures. SUMMARY OF RESULTS Silicate melt inclusions are rhyolite to high-silica rhyolite. Major element abundances are broadly consistent with crystallization of major and minor phases observed in hand sample, including quartz, sanidine, plagioclase, and biotite. Melts are medium-K to very high-K, ferroan, and range from calcic to alkalic compositions. A few melts are metaluminous to slightly peraluminous, but most are strongly peraluminous. Rhyolite and high-Si rhyolite melts display wide variations in trace element concentrations. Chondrite-normalized multi-element diagrams generally show moderate to deep troughs in Ba, Sr, Ce, P, and Ti, and some notable enrichments in Rb, Ba, Th, U, Nb, Ta, La, and Y relative to average upper crust. Rare earth element patterns typically have gentle to steep negative slopes, with light rare earth elements (LREEs) enriched relative to heavy rare earth elements (HREEs). Samples with higher overall REE concentrations tend to have flatter patterns with more pronounced negative Eu anomalies. The rhyolite melts contain a wide range of dissolved volatile concentrations. Measured dissolved H2O contents range from about 0.3 to 4.7 weight percent (percent) (mean about 2.4 percent) and dissolved CO2 concentrations range from about 20 to 950 parts per million (ppm) (mean about 190 ppm). Fluorine and Cl concentrations are moderate to high, from about 0.13 ppm to 1.1 percent (mean about 0.3 percent) and about 130 ppm to 0.2 percent (mean about 650 ppm), respectively. Sulfur contents are low, about 2 to 140 ppm (mean about 25 ppm). Lithium concentrations are low to moderate, from about 1 to 770 ppm (mean about 155 ppm). Concentrations of Ti in host quartz range from 6 to 95 ppm Ti with a mean of 36 ppm. Sparse biotite phenocrysts display a broad range of MgO (about 2-14 percent), FeO* (about 14-36 percent), and contain variable amounts of F (about 0.1-3.8 percent) and Cl (about 0.05-0.4 percent). Ore metal concentrations in rhyolite melts range from <3-266 ppb Au (median = 16 ppb), <16-44 ppb Te (median = 29 ppb), <0.2-2.2 ppm Sb (median = 0.29 ppm), 0.2-6.3 ppm Tl (median = 1.2 ppm), 0.5-7.4 ppm W (median = 2.5 ppm), and 0.5-22 ppm As (median = 1.7 ppm), <0.02-1.5 ppm Ag (median = 0.13 ppm), 0.1-9 ppm Mo (median = 2 ppm), 0.7-25 ppm Sn (median = 4.5 ppm), 1-82 ppm Pb (median = 31 ppm), 0.2-2.3 ppm Co (median = 0.5 ppm), <0.04-39 ppm Cu (median = 2 ppm), 4-18 ppm Ni (median = 7 ppm), and 10-153 ppm Zn (median = 42 ppm). Metal concentrations in melt inclusions range widely regardless of their age and timing relative to nearby Carlin-type Au mineralization (i.e., pre-, syn-, or post-ore). These major, trace, and volatile element data from quartz-hosted rhyolitic melt inclusions, host quartz, and biotite indicate that mid-Cenozoic rhyolitic magmas are remarkably diverse. This compositional diversity suggests varied evolutionary pathways as magmas ascended through the crust, mobilizing magmas from different reservoirs with distinct characteristics. The evident indifference of Carlin-type Au systems to a specific silicic magma “flavor” seems to imply that if magmas are involved in their genesis, they perhaps do not need to be compositionally specialized. These data support three journal articles: (1) Eocene magma plumbing system beneath Cortez Hills Carlin-type gold deposit, Nevada: Is there a deep-seated pluton?, (2) Pre-eruptive characteristics of “suspect” silicic magmas in Carlin-type Au-forming systems, and (3) Metal fingerprints of Eocene rhyolite magmas coincident with Carlin-type gold deposition. The geochemical data provided in this data release contain trailing digits. If the CSV files are opened directly in Microsoft Excel, data values may be truncated. To ensure the appropriate number of decimal places are displayed when using Excel, please open a blank workbook and import the data from the CSV files as text (no data type detection). REFERENCES CITED Behrens, H., Tamic, N. and Holtz, F., 2004, Determination of the molar absorption coefficient for the infrared absorption band of CO2 in rhyolitic glasses: American Mineralogist, v. 89, nos. 2–3, p. 301–306, https://doi.org/10.2138/am-2004-2-307. Donovan, J.J., Lowers, H.A. and Rusk, B.G., 2011, Improved electron probe microanalysis of trace elements in quartz: American Mineralogist, v. 96, nos. 2-3, p. 274–282, https://doi.org/10.2138/am.2011.3631. Guillong, M., Meier, D.L., Allan, M.M., Heinrich, C.A., and Yardley, B.W., 2008, Appendix A6: Sills: A Matlab-based program for the reduction of laser ablation ICP-MS data of homogenous materials and inclusions, in Sylvester, P., ed., Laser Ablation ICP-MS in the Earth Sciences: Current Practices and Outstanding Issues: Mineralogical Association of Canada Short Course, v. 40, p. 328–333, available at http://www.minsocam.org/msa/MAC_Pubs/#mac040. Halter, W.E., Pettke, T., Heinrich, C.A., and Rothen-Rutishauser, B., 2002, Major to trace element analysis of melt inclusions by laser-ablation ICP-MS: methods of quantification: Chemical Geology, v. 183, nos. 1-4, p. 63–86, https://doi.org/10.1016/S0009-2541(01)00372-2. Jenner, F., and O'Neill, H., 2012, Major and trace analysis of basaltic glasses by laser-ablation ICP-MS: Geochemistry, Geophysics, Geosystems, v. 13, no. 3, p. 1–17, https://doi.org/10.1029/2011GC003890. Jochum, K.P., Weis U., Stoll, B., Kuzmin, D., Yang, Q., Raczek, I., Jacob, D.E., Stracke, A., Birbaum, K., Frick, D.A., Günther, D. and Enzweiler, J., 2011, Determination of Reference Values for NIST SRM 610-617 Glasses Following ISO Guidelines. Geostandards and Geoanalytical Research, v. 35, no. 4, p. 397–429, https://doi.org/10.1111/j.1751-908X.2011.00120.x. Jochum, K.P., Nohl, U., Herwig, K., Lammel, E., Stoll, B., and Hofmann, A.W., 2007, GeoReM: A new geochemical database for reference materials and isotopic standards: Geostandards and Geoanalytical Research, v. 29, no. 3 [2005], p. 333–338, https://doi.org/10.1111/j.1751-908X.2005.tb00904.x. Application v. 27 [02/01/2020] available at http://georem.mpch-mainz.gwdg.de. Jochum K.P. and Willbold M., 2006, Reference Materials in Geoanalytical Research—Review for 2004 and 2005: Geostandards and Geoanalytical Research, v. 30, no. 3, p. 143–156, https://doi.org/10.1111/j.1751-908X.2006.tb01057.x. Luhr, J.F., 2001, Glass inclusions and melt volatile contents at Paricutin Volcano, Mexico: Contributions to Mineralogy and Petrology, v. 142, p. 261–283, https://doi.org/10.1007/s004100100293. Mandeville, C.W., Webster, J.D., Rutherford, M.J., Taylor, B.E., Timbal, A., and Faure, K., 2002, Determination of molar absorptivities for infrared absorption bands of H2O in andesitic glasses: American Mineralogist, v. 87, no. 7, p. 813–821, https://doi.org/10.2138/am-2002-0702. Mercer, C.N., Hofstra, A.H., Todorov, T.I., Roberge, J., Burgisser, A., Adams, D.T. and Cosca, M., 2015, Pre-eruptive conditions of the hideaway park topaz rhyolite: Insights into metal source and evolution of magma parental to the Henderson porphyry molybdenum deposit, Colorado: Journal of Petrology, v. 56, no. 4, p. 645–679, https://doi.org/10.1093/petrology/egv010. Wysoczanski, R., and Tani, K., 2006, Spectroscopic FTIR imaging of water species in silicic volcanic glasses and melt inclusions: An example from the Izu-Bonin arc: Journal of Volcanology and Geothermal Research, v. 156, nos. 3–4, p. 302–314, https://doi.org/10.1016/j.jvolgeores.2006.03.024. Zajacz, Z., and Halter, W.E., 2007, LA-ICP-MS analyses of silicate melt inclusions in co-precipitated minerals: Quantification, data analysis and mineral/melt partitioning: Geochimica et Cosmochimica Acta, v. 71, no. 4, p. 1021–1040, https://doi.org/10.1016/j.gca.2006.11.001. Zhang, Y., Belcher, R., Ihinger, P.D., Wang, L., Xu, Z., and Newman, S., 1997, New calibration of infrared measurement of dissolved water in rhyolitic glasses: Geochimica et Cosmochimica Acta, v. 61, no. 15, p. 3089-3100, https://doi.org/10.1016/S0016-7037(97)00151-8. 2009 2025 observed Complete None planned -116.9822 -114.5293 41.0251 39.5079 ISO 19115 Topic Category geoscientific information economy USGS Thesaurus rare earth elements mineral resources igneous rocks petrography rocks and deposits chemical analysis None U.S. Geological Survey USGS Mineral Resources Program MRP Geology, Geophysics, and Geochemistry Science Center GGGSC Magmas to Metals project melt inclusions rhyolite metallogenic potential ore deposits magma plumbing system magmatic volatiles thermobarometry Carlin-type gold porphyry deposit Sensitive high-resolution ion microprobe-reverse geometry SHRIMP-RG Laser-ablation inductively coupled plasma mass spectrometry LA-ICP-MS Fourier transform infrared spectroscopy FTIR Electron microprobe EMP Scanning electron microscope SEM USGS Metadata Identifier USGS:5efe59e782ce0afb2440a7a0 Geographic Names Information System (GNIS) Elko County Eureka County Lander County White Pine County Eureka Shoshone Range Toiyabe Range Fish Creek Range Maverick Springs Range Tuscarora Mountains Pequop Mountains Carico Lake Valley Copper Canyon Mount Tenabo Rocky Pass Blue Star Mine Common geographic areas Nevada United States None Caetano Caldera Bald Mountain Target Hill Nanny Creek Beast pit Genesis pit Cortez Hills pit Geolex Cenozoic Eocene none Any use of trade, firm, or product names is for descriptive purposes only and does not imply endorsement by the U.S. Government. Although these data have been processed successfully on a computer system at the U.S. Geological Survey (USGS), no warranty expressed or implied is made regarding the display or utility of the data for other purposes, nor on all computer systems, nor shall the act of distribution constitute any such warranty. The USGS or the U.S. Government shall not be held liable for improper or incorrect use of the data described and/or contained herein. Acknowledgment of the U.S. Geological Survey would be appreciated in products derived from these data. Celestine N Mercer USGS - ROCKY MOUNTAIN REGION Research Geologist mailing and physical

Denver Federal Center,DFC Bldg 20

Lakewood CO 80225 303-236-1866 cmercer@usgs.gov This release of the dataset was funded by the U.S. Geological Survey Mineral Resources Program (MRP). Samples were collected by the Magmas to Metals Project. Microsoft Excel 10 The dataset was peer reviewed spot-checking data. During analyses the instruments were calibrated with standard calibrations using primary and secondary standard materials. No formal logical accuracy tests were conducted. Data set is considered complete for the information presented, as described in the abstract. Users are advised to read the rest of the metadata record carefully for additional details. No horizontal accuracy tests were conducted for this dataset. No vertical accuracy tests were conducted for this dataset. SAMPLE COLLECTION: Nineteen rhyolitic samples were collected from five magmatic centers across northeastern Nevada from 2009–2013. 2013 SAMPLE PREPARATION FOR MICRO-ANALYSIS: Polished thick sections were prepared for petrographic and SEM analysis. A portion of each sample was crushed, sieved, and quartz grains (about 0.5–2 millimeters) hosting suitable silicate melt inclusions (that is, fully enclosed) were selected and prepared following the basic procedures of Mercer and others (2015). About half of the quartz grains were prepared for direct analysis by LA-ICP-MS and the other half were reheated to prepare them for analysis by FTIR spectroscopy, EMP, SHRIMP-RG, and LA-ICP-MS. Polished grain mounts with biotite and accessory phases were prepared for EMP analysis of biotite. 2013 FTIR ANALYSIS: Water and CO2 concentrations dissolved in 110 glassy silicate melt inclusions were measured using a Bruker Vertex 70 FTIR spectrometer interfaced with a Hyperion 3000 FTIR microscope housed at the U.S. Geological Survey Denver Inclusion Analysis Laboratory. The FTIR spectrometer and microscope stage were continuously purged with dry, CO2-free air, to avoid interference by atmospheric H2O and CO2. Measured relative absorbances were converted to H2O and CO2 concentrations using the Beer-Lambert Law, ci = MiA/ρdε, where ci is the concentration of the absorbing species, Mi is the molecular weight of the H2O (18.02) or CO2 (44.00), A is the absorbance intensity of the band of interest, ρ is the room temperature density of the rhyolitic glass, d is the thickness of the inclusion, and ε is the molar absorption coefficient for the species of interest. In rhyolitic glass, ρ and ε depend strongly on total H2O concentration (Luhr, 2001), which requires an iterative process to converge on the best values. Total dissolved H2O concentrations were calculated using the near IR peaks (4520+5230 cm-1) for thicker wafers or samples with higher volatile contents following Zhang and others (1997) and the 3550 cm-1 peak for thinner wafers or those with lower volatile contents (Mandeville, 2002). Dissolved CO2 was measured using the 2350 cm-1 peak (Behrens and others, 2004). The thickness of the wafers containing the inclusions was first determined using the interference fringe method of Wysoczanski and Tani (2006), which we cross-checked optically using the high-precision, motorized Z-stage on the FTIR microscope. Based on replicate FTIR analyses, 2σ precision is generally within ≤0.1 wt% for H2O and ≤15 ppm for CO2. The majority of melt inclusions in this study are bubble-free; however, about one third of inclusions contain shrinkage bubbles and show variable loss of CO2 into the bubble. About half of those inclusions contain <10 volume % (vol%) bubbles and show minimal loss of CO2, while the other half contain %lt;10 vol% bubbles with extensive CO2-loss. In bubble-bearing melt inclusions, CO2 values should be considered a minimum estimate. 2015 SAMPLE MICRO-ANALYSIS: SEM and EMP data were obtained at the USGS Denver Microbeam Laboratory. Sample imaging and laser/ion beam pit observations were acquired using the FEI Quanta 450 field emission gun SEM at the Denver Microbeam Laboratory operating at 15 kilovolts (kV) and a beam current of 0.1–0.5 nanoamperes (nA). Major and minor elements in melt inclusion glasses were analyzed by EMP using a JEOL 8900 electron microprobe using a setup optimized for hydrous glass using a 15 kV accelerating voltage, 10 nA beam current, and the largest spot size possible (about 3–10 micrometers (µm)) to minimize volatilization. Sodium, K, Si, and Al were counted first to collect X-rays with minimal beam exposure, and their concentrations were calculated using a time-dependent intensity correction in Probe for Windows (Donovan and others, 2011). Analyses of Cl and F in the glass inclusions were well above the detection limit (90 ppm and 1,240 ppm, respectively), whereas nearly all analyses of S were below the detection limit (130 ppm) so we used SHRIMP-RG to measure S contents. Biotite was analyzed using a 15 kV accelerating potential, a 20 nA beam current, and a 1–5 µm spot size. Natural and synthetic minerals and glasses were used as standards for all EMP analyses. 2015 ION MICROPROBE: A suite of eleven trace elements that are difficult to resolve by EMP or LA-ICP-MS (Li, B, Ph, S, Se, Co, Ni, As, Sb, Te, Au) were analyzed in melt inclusions by ion microprobe at Stanford University using the Australian Scientific Instruments Stanford/USGS SHRIMP-RG. Glassy silicate melt inclusions were analyzed by operating the SHRIMP-RG with a 5 nA Cs+ primary beam focused to a 20 µm spot size. Elemental concentrations were calculated for silicate melt inclusions by calibrating a York linear regression to the average standard data for the MPI-DING ATHO-G, National Institute of Standards and Technologies (NIST) standard reference material (SRM) 611, NIST SRM 613, and NIST SRM 615 glasses, allowing us to weight the fit based on analytical uncertainties for each standard. The reduced chi-squared, X2 (goodness of fit), for each element are excellent, ranging from 0.08 to 2.9 for all elements. The preferred standard values for these standard glasses are from Jochum and Willbold (2006) and Jenner and O'Neill (2012). 2015 LASER ABLATION: Trace elements were analyzed from silicate melt inclusions (91 homogenized, 70 crystalline) by LA-ICP-MS at the University of Toronto using a New Wave Research (NWR) 193 nanometer (nm) UC laser ablation system and an Agilent 7900 quadrupole mass spectrometer. A suite of thirty trace elements was analyzed, including standard petrogenetic elements and tracers for the involvement of sediments and basinal brines (for example, Li, V, Bi, and U) and ore metals of interest (Cu, Zn, Mo, Ag, Sn, W, Au, Tl, Pb). Major elements were analyzed to help monitor for analysis contamination by mineral inclusions. Laser spot sizes ranged from 20 to 80 µm, depending on melt inclusion size and, for crystalline inclusions, depth beneath the polished surface. One laser ablation setup was optimized for spot analyses of homogeneous glass inclusions, and another for drilling through quartz and analyzing whole crystalline inclusions. The NIST SRM 610 glass was used as the primary reference material for all analyses and GSD-1G SRM was used as the secondary standard for all analyses. The preferred standard values for these standard glasses are from Jochum and others (2011), and GeoReM (Jochum and others, 2007). 2016 DATA PROCESSING: LA-ICP-MS signals for crystalline inclusions were integrated using the SILLS software of Guillong and others (2008), and the integrated count rates were computed using the Excel spreadsheet of Halter and others (2002). Concentrations of Al measured by EMP were used as the internal standard for homogenous inclusions. For crystalline inclusions, Al2O3/X ratios (where X is an incompatible element in quartz, for example, Nb, Sm, Gd, Dy, Yb, and Ta) were chosen specifically for each sample suite to deconvolute the host and inclusion signal and calculate the mass ratio (that is, the ratio of the relative contribution of the quartz and the silicate melt inclusion to the bulk LA-ICP-MS signal) following the methods of Zajacz and Halter (2007). Five sanidine-hosted inclusions were inadvertently analyzed and returned suitable analyses so we include them with the quartz-hosted inclusion analyses 2017 DATA COMPILATION: Analyses results were compiled, formatted, and prepared for publication. 2025 0.0001 0.0001 Decimal degrees World Geodetic System 1984 (WGS 84) WGS_1984 6378137.0 298.257223563 SampleLocations.csv Comma Separated Value (CSV) file containing sample location data. Producer Defined Location General sample location U.S. Geological Survey - - - Sample Sample identification U.S. Geological Survey - - - Unit Geologic unit identification U.S. Geological Survey - - - Latitude Latitude, in decimal degrees, referenced to the World Geodetic System 1984 (WGS84). U.S. Geological Survey 39.5079 41.0251 - Longitude Longitude, in decimal degrees, referenced to the World Geodetic System 1984 (WGS84). U.S. Geological Survey -116.9822 -114.5293 - Description General hand sample description U.S. Geological Survey - - - Table1_MeltInclusionData_v2.0.csv Comma Separated Value (CSV) file containing melt inclusion data. Producer Defined Location General sample location U.S. Geological Survey - - - Sample Sample identification U.S. Geological Survey - - - Unit Geologic unit identification U.S. Geological Survey - - - Latitude Latitude, in decimal degrees, referenced to the World Geodetic System 1984 (WGS84). U.S. Geological Survey 39.5079 41.0251 - Longitude Longitude, in decimal degrees, referenced to the World Geodetic System 1984 (WGS84). U.S. Geological Survey -116.9822 -114.5293 - Description General hand sample description U.S. Geological Survey - - - Host Mineral host U.S. Geological Survey - - - Inclusion Inclusion identification number U.S. Geological Survey - - - Inclusion_description Description of inclusion form U.S. Geological Survey - - - Shrinkage_bubble_VolPct Estimated shrinkage bubble volume percent. A value of -9999 indicates that the sample does not have a recorded value. U.S. Geological Survey 0 30 volume percent Crystals_VolPct Estimated daughter crystal volume percent. A value of -9999 indicates that the sample does not have a recorded value. U.S. Geological Survey 0 10 volume percent Inclusion_diameter_Micron Approximate mean melt inclusion diameter in microns. A value of -9999 indicates that the sample does not have a recorded value. U.S. Geological Survey 22 345 microns n_EMP Number of analyses conducted by electron microprobe (EMP). A value of -9999 indicates that the sample does not have a recorded value. U.S. Geological Survey 1 7 unitless SiO2_WtPct_EMP Silicon dioxide in weight percent. Conducted by electron microprobe (EMP). Values below the 99 percent confidence detection limit of the analytical method are indicated by "-" with the 99 percent confidence detection limit given after the "-". A value of -9999 indicates that the sample does not have a recorded value. U.S. Geological Survey 71.53 85.71 weight percent TiO2_WtPct_EMP Titanium dioxide in weight percent. Conducted by electron microprobe (EMP). Values below the 99 percent confidence detection limit of the analytical method are indicated by "-" with the 99 percent confidence detection limit given after the "-". A value of -9999 indicates that the sample does not have a recorded value. U.S. Geological Survey -0.03 0.15 weight percent Al2O3_WtPct_EMP Aluminum oxide in weight percent. Conducted by electron microprobe (EMP). Values below the 99 percent confidence detection limit of the analytical method are indicated by "-" with the 99 percent confidence detection limit given after the "-". U.S. Geological Survey 8.90 16.85 weight percent FeO_WtPct_EMP Iron oxide in weight percent. Conducted by electron microprobe (EMP). Values below the 99 percent confidence detection limit of the analytical method are indicated by "-" with the 99 percent confidence detection limit given after the "-". A value of -9999 indicates that the sample does not have a recorded value. U.S. Geological Survey -0.03 1.22 weight percent MnO_WtPct_EMP Manganese oxide in weight percent. Conducted by electron microprobe (EMP). Values below the 99 percent confidence detection limit of the analytical method are indicated by "-" with the 99 percent confidence detection limit given after the "-". A value of -9999 indicates that the sample does not have a recorded value. U.S. Geological Survey -0.03 0.22 weight percent MgO_WtPct_EMP Magnesium oxide in weight percent. Conducted by electron microprobe (EMP). Values below the 99 percent confidence detection limit of the analytical method are indicated by "-" with the 99 percent confidence detection limit given after the "-". A value of -9999 indicates that the sample does not have a recorded value. U.S. Geological Survey -0.02 0.11 weight percent CaO_WtPct_EMP Calcium oxide in weight percent. Conducted by electron microprobe (EMP). Values below the 99 percent confidence detection limit of the analytical method are indicated by "-" with the 99 percent confidence detection limit given after the "-". A value of -9999 indicates that the sample does not have a recorded value. U.S. Geological Survey 0.20 1.60 weight percent Na2O_WtPct_EMP Sodium oxide in weight percent. Conducted by electron microprobe (EMP). Values below the 99 percent confidence detection limit of the analytical method are indicated by "-" with the 99 percent confidence detection limit given after the "-". A value of -9999 indicates that the sample does not have a recorded value. U.S. Geological Survey 1.26 5.24 weight percent K2O_WtPct_EMP Potassium oxide in weight percent. Conducted by electron microprobe (EMP). Values below the 99 percent confidence detection limit of the analytical method are indicated by "-" with the 99 percent confidence detection limit given after the "-". A value of -9999 indicates that the sample does not have a recorded value. U.S. Geological Survey 2.59 6.82 weight percent Total_WtPct_EMP Total anhydrous major element oxides in weight percent. Conducted by electron microprobe (EMP). A value of -9999 indicates that the sample does not have a recorded value. U.S. Geological Survey 94.71 101.57 weight percent F_ppm_EMP Fluorine in parts per million. Conducted by electron microprobe (EMP). Values below the 99 percent confidence detection limit of the analytical method are indicated by "-" with the 99 percent confidence detection limit given after the "-". A value of -9999 indicates that the sample does not have a recorded value. U.S. Geological Survey -1240 10659 parts per million S_ppm_EMP Sulfur in parts per million. Conducted by electron microprobe (EMP). Values below the 99 percent confidence detection limit of the analytical method are indicated by "-" with the 99 percent confidence detection limit given after the "-". A value of -9999 indicates that the sample does not have a recorded value. U.S. Geological Survey -130 225 parts per million Cl_ppm_EMP Chlorine in parts per million. Conducted by electron microprobe (EMP). Values below the 99 percent confidence detection limit of the analytical method are indicated by "-" with the 99 percent confidence detection limit given after the "-". A value of -9999 indicates that the sample does not have a recorded value. U.S. Geological Survey 133 1925 parts per million n_FTIR Number of analyses conducted by Fourier-transform infrared spectroscopy (FTIR). A value of -9999 indicates that the sample does not have a recorded value. U.S. Geological Survey 2 3 unitless H2O_WtPct_FTIR Water in weight percent. Conducted by Fourier-transform infrared spectroscopy (FTIR). Values below the 99 percent confidence detection limit of the analytical method are indicated by "-" with the 99 percent confidence detection limit given after the "-". U.S. Geological Survey 0.27 6.08 weight percent CO2_ppm_FTIR Carbon dioxide in parts per million. Conducted by Fourier-transform infrared spectroscopy (FTIR). Values below the 99 percent confidence detection limit of the analytical method are indicated by "-" with the 99 percent confidence detection limit given after the "-". A value of -9999 indicates that the sample does not have a recorded value. U.S. Geological Survey -15.00 952.20 parts per million n_SHRIMPRG Number of analyses conducted by sensitive high resolution ion microprobe - reverse geometry (SHRIMP-RG). A value of -9999 indicates that the sample does not have a recorded value. U.S. Geological Survey 1 1 unitless Li_ppm_SHRIMPRG Lithium in parts per million. Conducted by sensitive high resolution ion microprobe - reverse geometry (SHRIMP-RG). Values below the 99 percent confidence detection limit of the analytical method are indicated by "-" with the 99 percent confidence detection limit given after the "-". A value of -9999 indicates that the sample does not have a recorded value. U.S. Geological Survey 0.72 488.94 parts per million B_ppm_SHRIMPRG Boron in parts per million. Conducted by sensitive high resolution ion microprobe - reverse geometry (SHRIMP-RG). Values below the 99 percent confidence detection limit of the analytical method are indicated by "-" with the 99 percent confidence detection limit given after the "-". A value of -9999 indicates that the sample does not have a recorded value. U.S. Geological Survey -0.71 101.93 parts per million P_ppm_SHRIMPRG Phosphorus in parts per million. Conducted by sensitive high resolution ion microprobe - reverse geometry (SHRIMP-RG). Values below the 99 percent confidence detection limit of the analytical method are indicated by "-" with the 99 percent confidence detection limit given after the "-". A value of -9999 indicates that the sample does not have a recorded value. U.S. Geological Survey 3.25 130.13 parts per million S_ppm_SHRIMPRG Sulfur in parts per million. Conducted by sensitive high resolution ion microprobe - reverse geometry (SHRIMP-RG). Values below the 99 percent confidence detection limit of the analytical method are indicated by "-" with the 99 percent confidence detection limit given after the "-". A value of -9999 indicates that the sample does not have a recorded value. U.S. Geological Survey 2.45 136.46 parts per million Se_ppm_SHRIMPRG Selenium in parts per million. Conducted by sensitive high resolution ion microprobe - reverse geometry (SHRIMP-RG). Values below the 99 percent confidence detection limit of the analytical method are indicated by "-" with the 99 percent confidence detection limit given after the "-". A value of -9999 indicates that the sample does not have a recorded value. U.S. Geological Survey -0.10 0.40 parts per million n_LAICPMS Number of analyses conducted by laser ablation ICP-MS. A value of -9999 indicates that the sample does not have a recorded value. U.S. Geological Survey 1 1 unitless X_inclusion_host Mass ratio of inclusion to mineral host. A value of -9999 indicates that the sample does not have a recorded value. U.S. Geological Survey 0.28 1.00 unitless SiO2_WtPct_LAICPMS Silicon dioxide in weight percent. Conducted by laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS). Values below the 99 percent confidence detection limit of the analytical method are indicated by "-" with the 99 percent confidence detection limit given after the "-". A value of -9999 indicates that the sample does not have a recorded value. U.S. Geological Survey 70.73 83.74 weight percent TiO2_WtPct_LAICPMS Titanium dioxide in weight percent. Conducted by laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS). Values below the 99 percent confidence detection limit of the analytical method are indicated by "-" with the 99 percent confidence detection limit given after the "-". A value of -9999 indicates that the sample does not have a recorded value. U.S. Geological Survey 0.01 0.13 weight percent Al2O3_WtPct_LAICPMS Aluminum oxide in weight percent. Conducted by laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS). Values below the 99 percent confidence detection limit of the analytical method are indicated by "-" with the 99 percent confidence detection limit given after the "-". A value of -9999 indicates that the sample does not have a recorded value. U.S. Geological Survey 8.56 16.57 weight percent FeO_WtPct_LAICPMS Iron oxide in weight percent. Conducted by laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS). Values below the 99 percent confidence detection limit of the analytical method are indicated by "-" with the 99 percent confidence detection limit given after the "-". A value of -9999 indicates that the sample does not have a recorded value. U.S. Geological Survey 0.17 2.07 weight percent MnO_WtPct_LAICPMS Manganese oxide in weight percent. Conducted by laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS). Values below the 99 percent confidence detection limit of the analytical method are indicated by "-" with the 99 percent confidence detection limit given after the "-". A value of -9999 indicates that the sample does not have a recorded value. U.S. Geological Survey 0.01 0.35 weight percent MgO_WtPct_LAICPMS Magnesium oxide in weight percent. Conducted by laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS). Values below the 99 percent confidence detection limit of the analytical method are indicated by "-" with the 99 percent confidence detection limit given after the "-". A value of -9999 indicates that the sample does not have a recorded value. U.S. Geological Survey -0.02 0.28 weight percent CaO_WtPct_LAICPMS Calcium oxide in weight percent. Conducted by laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS). Values below the 99 percent confidence detection limit of the analytical method are indicated by "-" with the 99 percent confidence detection limit given after the "-". A value of -9999 indicates that the sample does not have a recorded value. U.S. Geological Survey 0.14 2.48 weight percent Na2O_WtPct_LAICPMS Sodium oxide in weight percent. Conducted by laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS). Values below the 99 percent confidence detection limit of the analytical method are indicated by "-" with the 99 percent confidence detection limit given after the "-". A value of -9999 indicates that the sample does not have a recorded value. U.S. Geological Survey 0.01 5.09 weight percent K2O_WtPct_LAICPMS Potassium oxide in weight percent. Conducted by laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS). Values below the 99 percent confidence detection limit of the analytical method are indicated by "-" with the 99 percent confidence detection limit given after the "-". A value of -9999 indicates that the sample does not have a recorded value. U.S. Geological Survey 1.48 8.30 weight percent Total_WtPct_LAICPMS Total anhydrous major element oxides in weight percent. Conducted by laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS). A value of -9999 indicates that the sample does not have a recorded value. U.S. Geological Survey 91.25 102.52 weight percent Li_ppm_LAICPMS Lithium in parts per million. Conducted by laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS). Values below the detection limit of the analytical method are indicated by "-" with the detection limit given after the "-". A value of -9999 indicates that the sample does not have a recorded value. U.S. Geological Survey 193.00 771.49 parts per million V_ppm_LAICPMS Vanadium in parts per million. Conducted by laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS). Values below the detection limit of the analytical method are indicated by "-" with the detection limit given after the "-". A value of -9999 indicates that the sample does not have a recorded value. U.S. Geological Survey -0.47 12.80 parts per million Rb_ppm_LAICPMS Rubidium in parts per million. Conducted by laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS). Values below the detection limit of the analytical method are indicated by "-" with the detection limit given after the "-". A value of -9999 indicates that the sample does not have a recorded value. U.S. Geological Survey 57.04 705.00 parts per million Sr_ppm_LAICPMS Strontium in parts per million. Conducted by laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS). Values below the detection limit of the analytical method are indicated by "-" with the detection limit given after the "-". A value of -9999 indicates that the sample does not have a recorded value. U.S. Geological Survey -0.56 250.90 parts per million Y_ppm_LAICPMS Yttrium in parts per million. Conducted by laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS). Values below the detection limit of the analytical method are indicated by "-" with the detection limit given after the "-". A value of -9999 indicates that the sample does not have a recorded value. U.S. Geological Survey 3.27 108.67 parts per million Zr_ppm_LAICPMS Zirconium in parts per million. Conducted by laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS). Values below the detection limit of the analytical method are indicated by "-" with the detection limit given after the "-". A value of -9999 indicates that the sample does not have a recorded value. U.S. Geological Survey 24.25 139.60 parts per million Nb_ppm_LAICPMS Niobium in parts per million. Conducted by laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS). Values below the detection limit of the analytical method are indicated by "-" with the detection limit given after the "-". A value of -9999 indicates that the sample does not have a recorded value. U.S. Geological Survey 5.10 70.10 parts per million Cs_ppm_LAICPMS Cesium in parts per million. Conducted by laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS). Values below the detection limit of the analytical method are indicated by "-" with the detection limit given after the "-". A value of -9999 indicates that the sample does not have a recorded value. U.S. Geological Survey -0.97 169.50 parts per million Ba_ppm_LAICPMS Barium in parts per million. Conducted by laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS). Values below the detection limit of the analytical method are indicated by "-" with the detection limit given after the "-". A value of -9999 indicates that the sample does not have a recorded value. U.S. Geological Survey -2.40 1662.00 parts per million La_ppm_LAICPMS Lanthanum in parts per million. Conducted by laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS). Values below the detection limit of the analytical method are indicated by "-" with the detection limit given after the "-". A value of -9999 indicates that the sample does not have a recorded value. U.S. Geological Survey 3.91 55.60 parts per million Ce_ppm_LAICPMS Cerium in parts per million. Conducted by laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS). Values below the detection limit of the analytical method are indicated by "-" with the detection limit given after the "-". A value of -9999 indicates that the sample does not have a recorded value. U.S. Geological Survey 9.15 97.40 parts per million Nd_ppm_LAICPMS Neodymium in parts per million. Conducted by laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS). Values below the detection limit of the analytical method are indicated by "-" with the detection limit given after the "-". A value of -9999 indicates that the sample does not have a recorded value. U.S. Geological Survey 4.45 34.20 parts per million Sm_ppm_LAICPMS Samarium in parts per million. Conducted by laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS). Values below the detection limit of the analytical method are indicated by "-" with the detection limit given after the "-". A value of -9999 indicates that the sample does not have a recorded value. U.S. Geological Survey 0.73 12.30 parts per million Eu_ppm_LAICPMS Europium in parts per million. Conducted by laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS). Values below the detection limit of the analytical method are indicated by "-" with the detection limit given after the "-". A value of -9999 indicates that the sample does not have a recorded value. U.S. Geological Survey -0.10 0.99 parts per million Gd_ppm_LAICPMS Gadolinium in parts per million. Conducted by laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS). Values below the detection limit of the analytical method are indicated by "-" with the detection limit given after the "-". A value of -9999 indicates that the sample does not have a recorded value. U.S. Geological Survey -0.43 15.03 parts per million Dy_ppm_LAICPMS Dysprosium in parts per million. Conducted by laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS). Values below the detection limit of the analytical method are indicated by "-" with the detection limit given after the "-". A value of -9999 indicates that the sample does not have a recorded value. U.S. Geological Survey 0.46 17.91 parts per million Er_ppm_LAICPMS Erbium in parts per million. Conducted by laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS). Values below the detection limit of the analytical method are indicated by "-" with the detection limit given after the "-". A value of -9999 indicates that the sample does not have a recorded value. U.S. Geological Survey 0.31 10.17 parts per million Yb_ppm_LAICPMS Ytterbium in parts per million. Conducted by laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS). Values below the detection limit of the analytical method are indicated by "-" with the detection limit given after the "-". A value of -9999 indicates that the sample does not have a recorded value. U.S. Geological Survey 0.36 9.87 parts per million Ta_ppm_LAICPMS Tantalum in parts per million. Conducted by laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS). Values below the detection limit of the analytical method are indicated by "-" with the detection limit given after the "-". A value of -9999 indicates that the sample does not have a recorded value. U.S. Geological Survey 0.29 10.30 parts per million Bi_ppm_LAICPMS Bismuth in parts per million. Conducted by laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS). Values below the detection limit of the analytical method are indicated by "-" with the detection limit given after the "-". A value of -9999 indicates that the sample does not have a recorded value. U.S. Geological Survey -0.29 1.60 parts per million Th_ppm_LAICPMS Thorium in parts per million. Conducted by laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS). Values below the detection limit of the analytical method are indicated by "-" with the detection limit given after the "-". A value of -9999 indicates that the sample does not have a recorded value. U.S. Geological Survey 7.80 43.40 parts per million U_ppm_LAICPMS Uranium in parts per million. Conducted by laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS). Values below the detection limit of the analytical method are indicated by "-" with the detection limit given after the "-". A value of -9999 indicates that the sample does not have a recorded value. U.S. Geological Survey 1.00 25.77 parts per million Ti_ppm_HostQuartz_LAICPMS Titanium in parts per million in host quartz near melt inclusion. Conducted by laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS). Values below the detection limit of the analytical method are indicated by "-" with the detection limit given after the "-". A value of -9999 indicates that the sample does not have a recorded value. U.S. Geological Survey 5.50 95.40 parts per million Co_ppm_SHRIMPRG Cobalt in parts per million. Conducted by sensitive high resolution ion microprobe - reverse geometry (SHRIMP-RG). Values below the 99 percent confidence detection limit of the analytical method are indicated by "-" with the 99 percent confidence detection limit given after the "-". A value of -9999 indicates that the sample does not have a recorded value. U.S. Geological Survey -0.15 2.32 parts per million Ni_ppm_SHRIMPRG Nickel in parts per million. Conducted by sensitive high resolution ion microprobe - reverse geometry (SHRIMP-RG). Values below the 99 percent confidence detection limit of the analytical method are indicated by "-" with the 99 percent confidence detection limit given after the "-". A value of -9999 indicates that the sample does not have a recorded value. U.S. Geological Survey 4.05 17.48 parts per million Cu_ppm_LAICPMS Copper in parts per million. Conducted by laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS). Values below the detection limit of the analytical method are indicated by "-" with the detection limit given after the "-". A value of -9999 indicates that the sample does not have a recorded value. U.S. Geological Survey 0.04 38.58 parts per million Zn_ppm_LAICPMS Zinc in parts per million. Conducted by laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS). Values below the detection limit of the analytical method are indicated by "-" with the detection limit given after the "-". A value of -9999 indicates that the sample does not have a recorded value. U.S. Geological Survey 10.32 152.50 parts per million As_ppm_SHRIMPRG Arsenic in parts per million. Conducted by sensitive high resolution ion microprobe - reverse geometry (SHRIMP-RG). Values below the 99 percent confidence detection limit of the analytical method are indicated by "-" with the 99 percent confidence detection limit given after the "-". A value of -9999 indicates that the sample does not have a recorded value. U.S. Geological Survey 0.46 22.02 parts per million Mo_ppm_LAICPMS Molybdenum in parts per million. Conducted by laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS). Values below the detection limit of the analytical method are indicated by "-" with the detection limit given after the "-". A value of -9999 indicates that the sample does not have a recorded value. U.S. Geological Survey 0.05 9.00 parts per million Ag_ppm_LAICPMS Silver in parts per million. Conducted by laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS). Values below the detection limit of the analytical method are indicated by "-" with the detection limit given after the "-". A value of -9999 indicates that the sample does not have a recorded value. U.S. Geological Survey 0.01 1.50 parts per million Sn_ppm_LAICPMS Tin in parts per million. Conducted by laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS). Values below the detection limit of the analytical method are indicated by "-" with the detection limit given after the "-". A value of -9999 indicates that the sample does not have a recorded value. U.S. Geological Survey 0.65 24.52 parts per million Sb_ppm_SHRIMPRG Antimony in parts per million. Conducted by sensitive high resolution ion microprobe - reverse geometry (SHRIMP-RG). Values below the 99 percent confidence detection limit of the analytical method are indicated by "-" with the 99 percent confidence detection limit given after the "-". A value of -9999 indicates that the sample does not have a recorded value. U.S. Geological Survey 0.19 2.24 parts per million Te_ppm_SHRIMPRG Tellurium in parts per million. Conducted by sensitive high resolution ion microprobe - reverse geometry (SHRIMP-RG). Values below the 99 percent confidence detection limit of the analytical method are indicated by "-" with the 99 percent confidence detection limit given after the "-". A value of -9999 indicates that the sample does not have a recorded value. U.S. Geological Survey 0.02 0.04 parts per million W_ppm_LAICPMS Tungsten in parts per million. Conducted by laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS). Values below the detection limit of the analytical method are indicated by "-" with the detection limit given after the "-". A value of -9999 indicates that the sample does not have a recorded value. U.S. Geological Survey 0.51 7.35 parts per million Au_ppm_LAICPMS Gold in parts per million. Conducted by laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS). Values below the detection limit of the analytical method are indicated by "-" with the detection limit given after the "-". A value of -9999 indicates that the sample does not have a recorded value. U.S. Geological Survey 0.003 0.55 parts per million Au_ppm_SHRIMPRG Gold in parts per million. Conducted by sensitive high resolution ion microprobe - reverse geometry (SHRIMP-RG). Values below the 99 percent confidence detection limit of the analytical method are indicated by "-" with the 99 percent confidence detection limit given after the "-". A value of -9999 indicates that the sample does not have a recorded value. U.S. Geological Survey 0.006 0.15 parts per million Tl_ppm_LAICPMS Thallium in parts per million. Conducted by laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS). Values below the detection limit of the analytical method are indicated by "-" with the detection limit given after the "-". A value of -9999 indicates that the sample does not have a recorded value. U.S. Geological Survey 0.16 6.31 parts per million Pb_ppm_LAICPMS Lead in parts per million. Conducted by laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS). Values below the detection limit of the analytical method are indicated by "-" with the detection limit given after the "-". A value of -9999 indicates that the sample does not have a recorded value. U.S. Geological Survey 1.06 82.30 parts per million Table2_BiotiteData.csv Comma Separated Value (CSV) file containing biotite data. Producer Defined Location General sample location U.S. Geological Survey - - - Sample Sample identification U.S. Geological Survey - - - Analysis Analysis identification U.S. Geological Survey - - - Description General hand sample description U.S. Geological Survey - - - n_EMP Number of analyses conducted by electron microprobe (EMP). U.S. Geological Survey 1 1 unitless SiO2_WtPct_EMP Silicon dioxide in weight percent. Conducted by electron microprobe (EMP). U.S. Geological Survey 29.54 37.30 weight percent TiO2_WtPct_EMP Titanium dioxide in weight percent. Conducted by electron microprobe (EMP). U.S. Geological Survey 1.37 6.31 weight percent Al2O3_WtPct_EMP Aluminum oxide in weight percent. Conducted by electron microprobe (EMP). U.S. Geological Survey 12.10 15.76 weight percent FeO_WtPct_EMP Iron oxide in weight percent. Conducted by electron microprobe (EMP). U.S. Geological Survey 14.37 35.47 weight percent MgO_WtPct_EMP Magnesium oxide in weight percent. Conducted by electron microprobe (EMP). U.S. Geological Survey 1.77 14.11 weight percent MnO_WtPct_EMP Manganese oxide in weight percent. Conducted by electron microprobe (EMP). U.S. Geological Survey 0.11 0.57 weight percent CaO_WtPct_EMP Calcium oxide in weight percent. Conducted by electron microprobe (EMP). Values below the 99 percent confidence detection limit of the analytical method are indicated by "-" with the 99 percent confidence detection limit given after the "-". U.S. Geological Survey -0.01 0.52 weight percent Na2O_WtPct_EMP Sodium oxide in weight percent. Conducted by electron microprobe (EMP). U.S. Geological Survey 0.14 0.75 weight percent K2O_WtPct_EMP Potassium oxide in weight percent. Conducted by electron microprobe (EMP). U.S. Geological Survey 4.77 9.38 weight percent F_ppm_EMP Fluorine in parts per million. Conducted by electron microprobe (EMP). U.S. Geological Survey - - - Cl_ppm_EMP Chlorine in parts per million. Conducted by electron microprobe (EMP). U.S. Geological Survey - - - H2O_WtPct_EMP Water in weight percent measured by water-by-difference. Conducted by electron microprobe (EMP). U.S. Geological Survey - - - O_F Oxygen equivalent fluorine O==F U.S. Geological Survey - - - O_Cl Oxygen equivalent chlorine O==Cl U.S. Geological Survey - - - Total_WtPct_EMP Total major element oxides in weight percent. Conducted by electron microprobe (EMP). U.S. Geological Survey - - - A data dictionary, DataDictionary_v2.0.csv, was used to describe the contents of the data files, SampleLocations.csv, Table1_MeltInclusionData_v2.0.csv, and Table2_BiotiteData.csv. It is a duplication of content in the 'Entity and Attributes' section of this metadata record and is provided for the convenience of the user. DataDictionary.csv is included in the 'Melt inclusion and mineral geochemical analyses supporting the evaluation of petrogenesis, degassing, and metallogenic potential of mid-Cenozoic rhyolite magmas in northern Nevada, USA' data release on ScienceBase (https://doi.org/10.5066/P9UWAW28). U.S. Geological Survey - ScienceBase mailing address

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Denver CO 80225 1-888-275-8747 sciencebase@usgs.gov Unless otherwise stated, all data, metadata and related materials are considered to satisfy the quality standards relative to the purpose for which the data were collected. Although these data and associated metadata have been reviewed for accuracy and completeness and approved for release by the U.S. Geological Survey (USGS), no warranty expressed or implied is made regarding the display or utility of the data for other purposes, nor on all computer systems, nor shall the act of distribution constitute any such warranty. comma-delimited text https://doi.org/10.5066/P9UWAW28 none 20250331 Celestine N Mercer USGS - ROCKY MOUNTAIN REGION Research Geologist mailing and physical

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Lakewood CO 80225 303-236-1866 cmercer@usgs.gov FGDC Content Standard for Digital Geospatial Metadata FGDC-STD-001-1998