John M. Meyer Raymond Kokaly Todd M. Hoefen Garth E. Graham Karen D. Kelley 20221215 tabular data Denver, CO U.S. Geological Survey Additional Information about Originators: Meyer, J. M., https://orcid.org/0000-0003-2810-9414; Kokaly, R., https://orcid.org/0000-0003-0276-7101; Hoefen, T. M., https://orcid.org/0000-0002-3083-5987; Graham, G. E., https://orcid.org/0000-0003-0657-0365; Kelley, K. D., https://orcid.org/0000-0002-3232-5809. Suggested Citation: Meyer, J.M., Kokaly, R., Hoefen, T.M., Graham, G.E., and Kelley, K.D., 2022, HySpex by NEO VNIR-1800 and SWIR-384 imaging spectrometer radiance and reflectance data, with associated ASD FieldSpecⓇ NG calibration data, collected at Cripple Creek Victor mine, Cripple Creek, Colorado, 2017: U.S. Geological Survey data release, https://doi.org/10.5066/P92VF8HP. https://doi.org/10.5066/P92VF8HP HySpex by NEO VNIR-1800 and SWIR-384 imaging spectrometer radiance data were acquired on September 14, 2017 at the Cresson Pit of the Cripple Creek & Victor mine in Cripple Creek, Colorado. ASD FieldSpecⓇ NG data were collected on September 13 and 14, 2017 at two calibration sites within the Cresson Pit imaged with the HySpex by NEO imaging spectrometers. The HySpex by NEO VNIR-1800 imaging spectrometer is a push broom type instrument that utilizes 1800 pixels to collect 186 channels of spectral data in the region of 400 to 1000 nanometer (nm). The spectral sampling interval of the HySpex by NEO VNIR-1800 is 3.26 nm with a 17° field of view (Norsk Elektro Optikk AS, 2016b). The HySpex by NEO SWIR-384 imagining spectrometer is a push broom type instrument that utilizes 384 pixels to collect 288 channels of spectral data in the region of 930 to 2500 nm. The spectral sampling interval of the HySpex by NEO SWIR-384 is 5.45 nm with a 16° field of view (Norsk Elektro Optikk AS, 2016a). The ASD FieldSpec NG point spectrometer has a spectral range of 350 to 2500 nm, a spectral resolution of 3 nm @ 700 nm and 6 nm @ 1400/2100 nm, with a spectral sampling of 1.4 nm @ 350 to 1000 nm and 1.1 nm @ 1001 to 2500 nm. The ASD FieldSpecⓇ NG collects 2151 channels of spectral data within a 25° field of view (Malvern Panalytical, 2018). Imaging spectrometer data were collected by mounting the HySpex by NEO VNIR-1800 and SWIR-384 imaging spectrometers on a rotating stage at the southeast portion of the Cresson Pit. The distance from the imaging spectrometers to areas imaged on the opposite side of the pit ranged from approximately 300 to 1500 m. This resulted in a pixel size of 4.7 to 23.4 cm for the VNIR data and 22 to 110 cm for the SWIR data. ASD FieldSpecⓇ NG spectra from each calibration site were spectrally averaged, converted to absolute reflectance, and convolved to the bandpass and sampling interval of the HySpex by NEO data. HySpex by NEO radiance spectra from regions of interest that encompassed the calibration sites were also spectrally averaged. Multipliers were generated by dividing the averaged and convolved ASD FieldSpecⓇ NG calibration site absolute reflectance data with the averaged HySpex by NEO radiance data encompassing the calibration sites. HySpex by NEO reflectance data cubes were generated by applying the multipliers to the HySpex by NEO radiance data cubes. The resultant reflectance cubes were then combined to create the reflectance mosaic. White mica wavelength position maps were generated using routines in the U.S. Geological Survey PRISM version1aq software suite (Kokaly, 2011). HySpex by NEO VNIR-1800 and SWIR-384 imaging spectrometer radiance data. HySpex by NEO data were collected as one component of a USGS mineral resource project with the goals of enhancing geologic mapping and developing methods to identify and characterize mineral deposits through the use of imaging spectroscopy. ASD FieldSpecⓇ data were collected to verify the HySpex by NEO data and to be used to convert the HySpex by NEO radiance data to reflection data. Techniques and skills developed are applicable elsewhere. The data contained in this data release is associated with the following publication: Meyer, 2022. References Cited: Kokaly, R.F., 2011, PRISM: Processing routines in IDL for spectroscopic measurements (installation manual and user's guide, version 1.0): U.S. Geological Survey Open-File Report 2011-1155, 432 p., https://doi.org/10.3133/ofr20111155. Malvern Panalytical, 2018, ASD FieldSpecⓇ 4 Hi-Res NG Spectroradiometer, accessed December 1, 2018 at https://www.malvernpanalytical.com/en/products/product-range/asd-range/fieldspec-range/fieldspec-4-hi-res-ng-spectroradiometer/. Meyer, J.M., Kokaly, R.F., and Holley, E. (2022). Hyperspectral remote sensing of white mica: A review of imaging and point-based spectrometer studies for mineral resources, with spectrometer design considerations: Remote Sensing of Environment, 275, https://doi.org/10.1016/j.rse.2022.113000. Norsk Elektro Optikk AS, 2016a, HySpex SWIR-384, accessed June 1, 2017 at http://www.hyspex.no/products/. Norsk Elektro Optikk AS, 2016b, HySpex VNIR-1800, accessed June 1, 2017 at http://www.hyspex.no/downloads/. 2017 2017 ground condition Complete None planned -105.17791 -105.10512 38.76258 38.69765 ISO 19115 Topic Category geoscientificInformation USGS Thesaurus Mineralogy Mineral Resources Economic Geology Hyperspectral Imaging Remote Sensing none Geology, Geophysics, and Geochemistry Science Center GGGSC Mineral Resources Program MRP Cripple Creek North Cripple Creek South Cripple Creek District Mine USGS Metadata Identifier USGS:62977271d34ec53d276c0c90 Common Geographic Areas United States Colorado Pikes Peak Big Bull Mountain Geographic Names Information System (GNIS) Teller County Cripple Creek Front Range None. Please see "Distribution Info" for details.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. John M Meyer U.S. Geological Survey Geophysicist mailing

Box 25046 MS 973 Denver Federal Center

Denver CO 80225 USA 303-236-3531 jmmeyer@usgs.gov This release of the dataset was funded by the Mineral Resources Program. The authors would like to thank Newmont Corporation. Attribute fields and values were reviewed and checked for accuracy and consistency of terms. 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. Calibration sites were located using a handheld GPS unit. The location determined by GPS should be accurate to the nearest 10,000th of a degree of latitude (11 meters) or longitude (8.7 meters). No formal vertical accuracy tests were conducted. Imaging Spectrometer Data Collection HySpex by NEO VNIR-1800 and HySpex by NEO SWIR-384 radiance data were collected in the Cresson Pit of the Cripple Creek & Victor mine on September 14, 2017. Imaging spectrometer data were collected by mounting the HySpex by NEO VNIR-1800 and SWIR-384 imaging spectrometers on a rotating stage at the southeast portion of the Cresson Pit at approximately 32.7278, -105.1350. The distance from the imaging spectrometers to areas imaged on the opposite side of the pit ranged from approximately 300 to 1500 m. This resulted in a pixel size of 4.7 to 23.4 cm for the VNIR data and 22 to 110 cm for the SWIR data. Each scan captured a panorama of the Cresson Pit. Varying the angle of the imaging spectrometers in relation to horizontal generated scans of different depths of the pit. Multiple scans were made as the angle of the cameras was varied. 2018 Point Spectrometer Data Collection of Calibration Sites Two calibration sites were identified and located using handheld GPS units. Calibration sites were chosen based upon accessibility, illumination during scanning, high albedo, and uniformity of spectral response across the region of 400 to 2500 nm. ASD FieldSpecⓇ NG spectra from each calibration site were collected, spectrally averaged, converted to absolute reflectance, and convolved from ASD FieldSpecⓇ NG sampling and bandpass to HySpex sampling and bandpass using functions in Kokaly (2011). 2018 Geographic Names Information System (GNIS) placenames and Common Geographic Areas keywords are used to identify the location of the hyperspectral data; The data are in raster format but are not related to ground coordinates and do not contain projection information. The calibration sites were located with a handheld GPS (WGS84 datum). Raster 0.00001 0.00001 Decimal Degrees WGS84 WGS84 6378137 298.25722 calibration_site1_ASD_field_spectra.txt Tab-delimited ASCII text file containing ASD FieldSpecⓇ NG spectrometer calibration data for site 1 U.S. Geological Survey Wavelengths Center of each channel reported in microns U.S. Geological Survey 0.350000024 2.499300003 microns Bandpass_FWHM Bandpass of each channel reported in microns U.S. Geological Survey 0.00244487 0.012936864 microns Record_569 Apparent reflectance of each channel reported on a scale of 0 to 1, with 1 representing 100% reflectance. U.S. Geological Survey 0.065935493 0.629003108 microns calibration_site2_ASD_field_spectra.txt Tab-delimited ASCII text file containing ASD FieldSpecⓇ NG spectrometer calibration data for site 2. U.S. Geological Survey Wavelengths Center of each channel reported in microns U.S. Geological Survey 0.3500000238 2.4993000031 microns Bandpass_FWHM Bandpass of each channel reported in microns U.S. Geological Survey 0.0024448701 0.0129368640 microns Record_935 Apparent reflectance of each channel reported on a scale of 0 to 1, with 1 representing 100% reflectance. U.S. Geological Survey 0.1338009387 0.6528089643 microns The files 'calibration_site1_ASD_field_spectra.txt' and 'calibration_site2_ASD_field_spectra.txt' contain spectral measurements collected using an ASD FieldSpecⓇ NG spectrometer of calibration site 1 and calibration site 2 respectively. The ASD FieldSpecⓇ NG collects 2150 channels of data in the region from 0.350 to 2.499 microns. Absolute reflectance data for each channel is reported on a scale of 0 to 1. Suggested Citation: Meyer, J.M., Kokaly, R., Hoefen, T.M., Graham, G.E., Kelley, K.D., 2021, HySpex by NEO VNIR-1800 and SWIR-384 imaging spectrometer radiance and reflectance data, with associated ASD FieldSpecⓇ NG calibration data, collected at Cripple Creek Victor mine, Cripple Creek, Colorado, 2017: U.S. Geological Survey data release, https://doi.org/10.5066/P92VF8HP. U.S. Geological Survey - ScienceBase U.S. Geological Survey mailing and physical

Building 810, Mail Stop 810, Denver Federal Center

Denver CO 80225 USA 1-888-275-8747 sciencebase@usgs.gov https://www.sciencebase.gov/catalog/item/62977271d34ec53d276c0c90 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. digital data No compression applied. https://doi.org/10.5066/P92VF8HP none none 20230710 John M Meyer U.S. Geological Survey Geophysicist mailing

Box 25046 MS 973 Denver Federal Center

Denver CO 80225 USA 303-236-3531 jmmeyer@usgs.gov Content Standard for Digital Geospatial Metadata FGDC-STD-001-1998