Forty samples of outcropping rock samples were collected from the Permian Cutler Formation exposed in the Sinbad Valley, Mesa County, Colorado by USGS volunteer Jon Thorson. This sample set includes 13 pairs of co-existing red unaltered and yellow-grey bleached sandstone. The decimal latitude and longitude locations of the sample collection sites are listed in the “All_Rock_Data” worksheet in the accompanying “All_Sinbad_Rocks” workbook. The samples were collected from rocks exposed on the eastern edge of a breached salt-cored anticline within about 1 to 100 meters from an active seep from which sulfurous brines supply water to Salt Creek. The co-existing red/bleached samples were collected within the same stratigraphic bedding plane, a few centimeters apart across the contacts between red and bleached tan to grey sandstones (Figure 1) as part of an effort to characterize the geochemical impact of bleaching on originally red sandstones. The study was designed to better understand the geochemical effects of bleaching of potential source rock for uranium and vanadium deposits on the Colorado Plateau as part of the development of a robust deposit model in support of the assessment of undiscovered uranium resources in this region. Each sample was crushed, ground, and geochemically analyzed by AGAT laboratories using inductively coupled plasma-optical emission spectrometry (ICP-OES) and by inductively coupled plasma-mass spectrometry (ICP-MS) analysis. At AGAT labs, samples were fused at 750oC with sodium peroxide, and the fusion cake was dissolved in nitric acid resulting in total dissolution of samples. The results of the geochemical analysis are summarized in the “All Sinbad Rocks” workbook. Summary statistics, correlation, t-test, principal component, and factor analysis of the samples was completed using the XLSTAT Excel data add-on software program (version 2019.4.2.63677 www.xlstat.com). These analyses are presented in workbook “Sinbad_Rock_Statistics”. At the 95% confidence interval, t-tests show that the difference between the mean values of uranium for red and bleached rock are statistically significant, with more uranium in the bleached subsample set. Other elements show no statistically significant variation between the mean concentrations of the elements. Sample splits of the 13 bleached/red paired rocks (26 total samples), were then leached using a 0.10 M NaHCO3 solution. This solution was chosen to: (1) attack loosely bound (ion-exchangeable or weakly sorbed) U and V; (2) provide an ionic strength buffer (pH 8.3); (3) provide a strong complexing agent to stabilize U in solution as uranyl carbonate or uranyl-Ca-carbonate complexes; (4) stabilize oxyanion species such as vanadate in solution; and (5) ensure that solutions approach equilibrium with calcite which is observed in the sandstones. Two grams of minus 200-mesh powder were combined with 20 ml of leach solution in plastic centrifuge tubes. The tubes were capped and shaken continuously for 24 hours on the benchtop (Figure 2). Additional two-gram aliquots of one bleached sandstone (sample 228558) were leached for periods of 1, 2, 4, 8, 24, 48 and 96-hours to compare to results from the 24-hour experiment. Mixtures of solid and leachate were centrifuged at 2500 revolutions per minute for 5 minutes, and liquids were withdrawn with syringe and filtered through 0.45-micron cellulose acetate syringe filters (18.5 ml of liquid was recovered). Solutions were acidified to pH <2 using purified nitric acid and submitted for analysis by ICP-MS or ICP-OES, the method depending on the element (see Data Dictionary worksheet). The concentration of dissolved uranium in leachates of bleached rocks was consistently either similar to or greater than in leachates from red rocks. Vanadium results were not as consistent. Five bleached samples with visible sulfide yielded virtually no leachable V. For other bleached samples leachable V was similar (n = 1) greater (n = 4) or lesser (n =

This data release presents the major and trace element chemistry of rock samples collected by the U.S. Geological Survey (USGS) from surface exposures of the Dora Bay igneous complex (DBIC), located in the southern part of Prince of Wales Island, southeastern Alaska. The DBIC is Early Jurassic in age (Bala and others, 2014) and is U-Th-heavy rare earth element (HREE)-enriched like the Bokan Mountain intrusive complex 30 km to the south (Philpotts and others 1998; Dostal and others, 2011; Taylor and others, 2016; 2017). However, the DBIC is significantly less-well-mineralized and is under-explored due to complicated private land status issues. HREE-enriched eudialyte-bearing pegmatites and felsic dikes have been discovered in numerous places within and along the margins of the pluton and extending up to 1 km into the country rocks as well as molybdenite and iron oxide mineral occurrences at its margins (Barker and Mardock, 1990; Philpotts and others, 1993; Taylor and others, 2014). Uncertainty of global REE supply and the subsequent spike in prices in 2008 resulted in renewed exploration at the DBIC by Avalon in 2010 and Sealaska Native Corporation in 2014-2015 (Buckley and Taylor, 2014). The DBIC was included in recent studies by the USGS Mineral Resources Program as part of an effort to understand the distribution of REE resources in the United States. This data release provides the analytical results of 54 rock samples collected by the authors during a site visit to the DBIC in June-July 2015. The samples represent transects along the major exposed ridgelines and outcrops within the complex. They provide a measure of the REE abundances and their variation throughout the complex as well as material for detailed isotopic and mineral chemistry studies. The samples were analyzed for 60 major and trace elements by inductively coupled plasma-optical emission spectrometry (ICP-OES) and inductively coupled plasma-mass spectrometry (ICP-MS)after a sodium fusion digestion and for major elements using wavelength dispersive x-ray fluorescence spectrometry (WDXRF). This data set is provided for future use in geologic, exploration, and environmental background studies of the DBIC. References listed here provide geologic context and additional descriptions on the geologic features represented by the rock samples: Bala, S.A., Holm-Denoma, C.S., Neymark, L.A., Taylor, C.D., Pietruszka, A.J., and Driscoll, R.L., 2014, U-Pb zircon ages and mineralogy of the Dora Bay intrusive complex and heavy REE-bearing pegmatite dikes: Geological Society of America Abstracts with Programs, v. 46, no. 6, p. 782, Abstract No. 324-11. Barker, J.C., and Mardock, Cheryl, 1990, Rare-earth element- and yttrium-bearing pegmatite dikes near Dora Bay, southern Prince of Wales Island: U.S. Bureau of Mines Open-File Report 19-90, 41 p. Barker, J.C., and Van Gosen, B.S., 2012, Alaska's rare earth deposits and resource potential: Mining Engineering, v. 64, no. 1, p. 20-32. Buckley, Steve, and Taylor, Cliff, 2014, Mineral potential on Sealaska Corporation Lands, southeast Alaska: Alaska Miner’s Association Biennial Conference on Alaskan Mining, Anchorage, Nov. 3–7, Abstracts of Papers, p. x. Dostal, J., Kontak, D.J., Hanley, J., and Owen, V. 2011. Geological investigation of rare earth element and uranium deposits of the Bokan Mountain Complex, Prince of Wales Island, Southeastern Alaska. U.S. Geological Survey Mineral Resources External Research Report G09AP00039, p. 122. Long, K.R., Van Gosen, B.S., Foley, N.K., and Cordier, David, 2010, The principal rare earth elements deposits of the United States-A summary of domestic deposits and a global perspective: U.S. Geological Survey Scientific Investigations Report 2010-5220, p. 28-34. Available at http://pubs.usgs.gov/sir/2010/5220/. Philpotts, J., Taylor, C.D., Evans, J., and Emsbo, P., 1993, Newly discovered molybdenite occurrences at Dora Bay, Prince of Wales Island, southeast Alaska, and preliminary scanning electron

This data release presents the major and trace element chemistry of rock samples collected by the U.S. Geological Survey (USGS) from surface exposures of the Dora Bay igneous complex (DBIC), located in the southern part of Prince of Wales Island, southeastern Alaska. The DBIC is Early Jurassic in age (Bala and others, 2014) and is U-Th-heavy rare earth element (HREE)-enriched like the Bokan Mountain intrusive complex 30 km to the south (Philpotts and others 1998; Dostal and others, 2011; Taylor and others, 2016; 2017). However, the DBIC is significantly less-well-mineralized and is under-explored due to complicated private land status issues. HREE-enriched eudialyte-bearing pegmatites and felsic dikes have been discovered in numerous places within and along the margins of the pluton and extending up to 1 km into the country rocks as well as molybdenite and iron oxide mineral occurrences at its margins (Barker and Mardock, 1990; Philpotts and others, 1993; Taylor and others, 2014). Uncertainty of global REE supply and the subsequent spike in prices in 2008 resulted in renewed exploration at the DBIC by Avalon in 2010 and Sealaska Native Corporation in 2014-2015 (Buckley and Taylor, 2014). The DBIC was included in recent studies by the USGS Mineral Resources Program as part of an effort to understand the distribution of REE resources in the United States. This data release provides the analytical results of 54 rock samples collected by the authors during a site visit to the DBIC in June-July 2015. The samples represent transects along the major exposed ridgelines and outcrops within the complex. They provide a measure of the REE abundances and their variation throughout the complex as well as material for detailed isotopic and mineral chemistry studies. The samples were analyzed for 60 major and trace elements by inductively coupled plasma-optical emission spectrometry (ICP-OES) and inductively coupled plasma-mass spectrometry (ICP-MS)after a sodium fusion digestion and for major elements using wavelength dispersive x-ray fluorescence spectrometry (WDXRF). This data set is provided for future use in geologic, exploration, and environmental background studies of the DBIC. References listed here provide geologic context and additional descriptions on the geologic features represented by the rock samples: Bala, S.A., Holm-Denoma, C.S., Neymark, L.A., Taylor, C.D., Pietruszka, A.J., and Driscoll, R.L., 2014, U-Pb zircon ages and mineralogy of the Dora Bay intrusive complex and heavy REE-bearing pegmatite dikes: Geological Society of America Abstracts with Programs, v. 46, no. 6, p. 782, Abstract No. 324-11. Barker, J.C., and Mardock, Cheryl, 1990, Rare-earth element- and yttrium-bearing pegmatite dikes near Dora Bay, southern Prince of Wales Island: U.S. Bureau of Mines Open-File Report 19-90, 41 p. Barker, J.C., and Van Gosen, B.S., 2012, Alaska's rare earth deposits and resource potential: Mining Engineering, v. 64, no. 1, p. 20-32. Buckley, Steve, and Taylor, Cliff, 2014, Mineral potential on Sealaska Corporation Lands, southeast Alaska: Alaska Miner’s Association Biennial Conference on Alaskan Mining, Anchorage, Nov. 3–7, Abstracts of Papers, p. x. Dostal, J., Kontak, D.J., Hanley, J., and Owen, V. 2011. Geological investigation of rare earth element and uranium deposits of the Bokan Mountain Complex, Prince of Wales Island, Southeastern Alaska. U.S. Geological Survey Mineral Resources External Research Report G09AP00039, p. 122. Long, K.R., Van Gosen, B.S., Foley, N.K., and Cordier, David, 2010, The principal rare earth elements deposits of the United States-A summary of domestic deposits and a global perspective: U.S. Geological Survey Scientific Investigations Report 2010-5220, p. 28-34. Available at http://pubs.usgs.gov/sir/2010/5220/. Philpotts, J., Taylor, C.D., Evans, J., and Emsbo, P., 1993, Newly discovered molybdenite occurrences at Dora Bay, Prince of Wales Island, southeast Alaska, and preliminary scanning electron

This data release presents the major and trace element chemistry of rock samples collected by the U.S. Geological Survey (USGS) from trenches, channel cuts, test pits, and surface exposures of the Dotson and I and L Zone rare earth element deposits at Bokan Mountain, located in the southern part of Prince of Wales Island, southeastern Alaska. Bokan Mountain was formed by an Early Jurassic peralkaline igneous complex that intruded into lower Paleozoic rocks of the Alexander terrane of southeast Alaska. The pluton and surrounding country rocks host numerous mineral deposits and occurrences, including heavy rare earth element (HREE)-rich pegmatites and felsic dikes, as well as mineral deposits rich in uranium, thorium, HREE, and fluorine. Recent exploration by Ucore Rare Metals Inc. (http://ucore.com/) at Bokan Mountain has focused on the Dotson and I and L Zones, which together form a 2.5-km-long, 50 m-wide zone of thin felsic dikes and pegmatites (each rarely more than 2-m-wide individually) that are enriched in rare earth elements (REE). Ucore Rare Metals has reported an indicated resource of 4.788 million metric tons of ore at 0.602 percent total REE oxides and an inferred resource of 1.050 million metric tons of ore at 0.603 percent total REE oxides, using a cutoff of 0.4 percent total REE oxides; about 40 percent of the total REE oxides in these dikes and pegmatites are the HREE (Ucore Rare Metals, 2020). There is also potential for the production of by-product Nb, Zr, and Ti. This data release provides the analytical results of 42 rock samples collected by the author during a site visit to Bokan Mountain in August 2014. The samples represent a complete transect along the entire length of the combined I and L and Dotson Zones from the margin of the pluton to tidewater in Kendrick Bay. They provide a measure of the REE abundances and their variation throughout the deposit as well as material for detailed isotopic and mineral chemistry studies (Taylor and others, 2016, 2017). The samples were analyzed for 57 major and trace elements using inductively coupled plasma-atomic emission spectrometry (ICP-AES), inductively coupled plasma-mass spectrometry (ICP-MS and ICP-MSREE), and inductively coupled plasma-optical emission spectrometry for zirconium (ICPOES). The samples were also analyzed for major elements using wavelength dispersive x-ray fluorescence spectrometry (WDXRF). This data set is provided for future use in geologic, exploration, and environmental background studies of the Dotson and I and L Zone deposits. References listed here provide geologic context and additional descriptions on the geologic features represented by the rock samples: Barker, J.C., and Van Gosen, B.S., 2012, Alaska's rare earth deposits and resource potential: Mining Engineering, v. 64, no. 1, p. 20-32. Dostal, J., Karl, S.M., Keppie, J.D., Kontak, D.J., Shellnutt, J.G., 2013, Bokan Mountain peralkaline granitic complex, Alexander terrane (southeastern Alaska)-Evidence for Early Jurassic rifting prior to accretion with North America: Canadian Journal of Earth Sciences, v. 50, 678-691. Dostal, Jaroslav, Kontak, D.J., and Karl, S.M., 2014, The Early Jurassic Bokan Mountain peralkaline granitic complex (southeastern Alaska)-Geochemistry, petrogenesis and rare-metal mineralization: Lithos, v. 202-203, p. 395-412. Dostal, Jaroslav, and Shellnutt, J.G., 2016, Origin of peralkaline granites of the Jurassic Bokan Mountain complex (southeastern Alaska) hosting rare metal mineralization: International Geology Review, v. 58, no. 1, p. 1-13. Long, K.R., Van Gosen, B.S., Foley, N.K., and Cordier, David, 2010, The principal rare earth elements deposits of the United States-A summary of domestic deposits and a global perspective: U.S. Geological Survey Scientific Investigations Report 2010-5220, p. 28-34. Available at http://pubs.usgs.gov/sir/2010/5220/. MacKevett, E.M., Jr., 1963, Geology and ore deposits of the Bokan Mountain uranium-thorium area, southeastern

This data release presents the major and trace element chemistry of rock samples collected by the U.S. Geological Survey (USGS) from trenches, channel cuts, test pits, and surface exposures of the Dotson and I and L Zone rare earth element deposits at Bokan Mountain, located in the southern part of Prince of Wales Island, southeastern Alaska. Bokan Mountain was formed by an Early Jurassic peralkaline igneous complex that intruded into lower Paleozoic rocks of the Alexander terrane of southeast Alaska. The pluton and surrounding country rocks host numerous mineral deposits and occurrences, including heavy rare earth element (HREE)-rich pegmatites and felsic dikes, as well as mineral deposits rich in uranium, thorium, HREE, and fluorine. Recent exploration by Ucore Rare Metals Inc. (http://ucore.com/) at Bokan Mountain has focused on the Dotson and I and L Zones, which together form a 2.5-km-long, 50 m-wide zone of thin felsic dikes and pegmatites (each rarely more than 2-m-wide individually) that are enriched in rare earth elements (REE). Ucore Rare Metals has reported an indicated resource of 4.788 million metric tons of ore at 0.602 percent total REE oxides and an inferred resource of 1.050 million metric tons of ore at 0.603 percent total REE oxides, using a cutoff of 0.4 percent total REE oxides; about 40 percent of the total REE oxides in these dikes and pegmatites are the HREE (Ucore Rare Metals, 2020). There is also potential for the production of by-product Nb, Zr, and Ti. This data release provides the analytical results of 42 rock samples collected by the author during a site visit to Bokan Mountain in August 2014. The samples represent a complete transect along the entire length of the combined I and L and Dotson Zones from the margin of the pluton to tidewater in Kendrick Bay. They provide a measure of the REE abundances and their variation throughout the deposit as well as material for detailed isotopic and mineral chemistry studies (Taylor and others, 2016, 2017). The samples were analyzed for 57 major and trace elements using inductively coupled plasma-atomic emission spectrometry (ICP-AES), inductively coupled plasma-mass spectrometry (ICP-MS and ICP-MSREE), and inductively coupled plasma-optical emission spectrometry for zirconium (ICPOES). The samples were also analyzed for major elements using wavelength dispersive x-ray fluorescence spectrometry (WDXRF). This data set is provided for future use in geologic, exploration, and environmental background studies of the Dotson and I and L Zone deposits. References listed here provide geologic context and additional descriptions on the geologic features represented by the rock samples: Barker, J.C., and Van Gosen, B.S., 2012, Alaska's rare earth deposits and resource potential: Mining Engineering, v. 64, no. 1, p. 20-32. Dostal, J., Karl, S.M., Keppie, J.D., Kontak, D.J., Shellnutt, J.G., 2013, Bokan Mountain peralkaline granitic complex, Alexander terrane (southeastern Alaska)-Evidence for Early Jurassic rifting prior to accretion with North America: Canadian Journal of Earth Sciences, v. 50, 678-691. Dostal, Jaroslav, Kontak, D.J., and Karl, S.M., 2014, The Early Jurassic Bokan Mountain peralkaline granitic complex (southeastern Alaska)-Geochemistry, petrogenesis and rare-metal mineralization: Lithos, v. 202-203, p. 395-412. Dostal, Jaroslav, and Shellnutt, J.G., 2016, Origin of peralkaline granites of the Jurassic Bokan Mountain complex (southeastern Alaska) hosting rare metal mineralization: International Geology Review, v. 58, no. 1, p. 1-13. Long, K.R., Van Gosen, B.S., Foley, N.K., and Cordier, David, 2010, The principal rare earth elements deposits of the United States-A summary of domestic deposits and a global perspective: U.S. Geological Survey Scientific Investigations Report 2010-5220, p. 28-34. Available at http://pubs.usgs.gov/sir/2010/5220/. MacKevett, E.M., Jr., 1963, Geology and ore deposits of the Bokan Mountain uranium-thorium area, southeastern

This data set compiles the major and trace element chemistry of rock samples collected by the U.S. Geological Survey (USGS) at Bokan Mountain, located in the southern part of Prince of Wales Island, southeastern Alaska. Bokan Mountain was formed by an Early Jurassic peralkaline igneous complex that intruded into lower Paleozoic rocks of the Alexander terrane of southeast Alaska. The pluton and surrounding country rocks host numerous mineral deposits and occurrences, including heavy rare earth element (HREE)-rich pegmatites and felsic dikes, as well as mineral deposits rich in uranium, thorium, HREE, and fluorine. The Ross-Adams mine on Bokan Mountain exploited a uranium-thorium deposit intermittently from the late 1950s to 1971, and remains the only uranium producer in Alaska. Recent exploration by Ucore Rare Metals Inc. (http://ucore.com/) at Bokan Mountain has focused on the Dotson and I and L Zones, which together form a 2.5-km-long, 50 m-wide zone of thin felsic dikes and pegmatites (each rarely more than 2-m-wide) that are enriched in rare earth elements (REE). Ucore Rare Metals has reported an inferred resource for the combined zones as 5.275 million metric tons of ore at 0.654 percent total REE oxides, using a cutoff of 0.4 percent total REE oxides; about 40 percent of the total REE oxides in these dikes and pegmatites are the HREE (http://ucore.com/Ucore_43-101.pdf). This data release provides the analytical results of 153 rock hand samples collected by USGS geologists during site visits to Bokan Mountain in 2010, 2011, and field studies during 2014. The samples represent a variety of rock types associated with the Bokan Mountain igneous complex, including mineral deposits, prospects and occurrences, along with examples of unaltered intrusions of the pluton. The samples were analyzed for 55 major and trace elements using inductively coupled plasma-atomic emission spectrometry (ICP-AES) and inductively coupled plasma-mass spectrometry (ICP-MS) and also analyzed for major elements using wavelength dispersive x-ray fluorescence spectrometry (WDXRF). This data set is provided for future use in geologic, exploration, and environmental background studies of Bokan Mountain and its mineral deposits.

This data set compiles the major and trace element chemistry of rock samples collected by the U.S. Geological Survey (USGS) at Bokan Mountain, located in the southern part of Prince of Wales Island, southeastern Alaska. Bokan Mountain was formed by an Early Jurassic peralkaline igneous complex that intruded into lower Paleozoic rocks of the Alexander terrane of southeast Alaska. The pluton and surrounding country rocks host numerous mineral deposits and occurrences, including heavy rare earth element (HREE)-rich pegmatites and felsic dikes, as well as mineral deposits rich in uranium, thorium, HREE, and fluorine. The Ross-Adams mine on Bokan Mountain exploited a uranium-thorium deposit intermittently from the late 1950s to 1971, and remains the only uranium producer in Alaska. Recent exploration by Ucore Rare Metals Inc. (http://ucore.com/) at Bokan Mountain has focused on the Dotson and I and L Zones, which together form a 2.5-km-long, 50 m-wide zone of thin felsic dikes and pegmatites (each rarely more than 2-m-wide) that are enriched in rare earth elements (REE). Ucore Rare Metals has reported an inferred resource for the combined zones as 5.275 million metric tons of ore at 0.654 percent total REE oxides, using a cutoff of 0.4 percent total REE oxides; about 40 percent of the total REE oxides in these dikes and pegmatites are the HREE (http://ucore.com/Ucore_43-101.pdf). This data release provides the analytical results of 153 rock hand samples collected by USGS geologists during site visits to Bokan Mountain in 2010, 2011, and field studies during 2014. The samples represent a variety of rock types associated with the Bokan Mountain igneous complex, including mineral deposits, prospects and occurrences, along with examples of unaltered intrusions of the pluton. The samples were analyzed for 55 major and trace elements using inductively coupled plasma-atomic emission spectrometry (ICP-AES) and inductively coupled plasma-mass spectrometry (ICP-MS) and also analyzed for major elements using wavelength dispersive x-ray fluorescence spectrometry (WDXRF). This data set is provided for future use in geologic, exploration, and environmental background studies of Bokan Mountain and its mineral deposits.

This dataset accompanies planned publication titled "The Far-Field imprint of the LPIA, its demise, and the onset of a dust-house climate across the Eastern Shelf of the Permian Basin". Zircon ages presented in this dataset are from rocks collected across the eastern margin of the Permian Basin, Texas. The U-Pb zircon ages are used to investigate changes in provenance in this region as a result of a changing hydroclimate and tectonics. Samples were collected from this region by Neil Griffis and Neil Tabor between March 2019 and April 2021. The data were collected at the University of California, Davis and the University of Texas, Austin between April 2019 and August 2021.

This dataset accompanies planned publication titled "The Far-Field imprint of the LPIA, its demise, and the onset of a dust-house climate across the Eastern Shelf of the Permian Basin". Zircon ages presented in this dataset are from rocks collected across the eastern margin of the Permian Basin, Texas. The U-Pb zircon ages are used to investigate changes in provenance in this region as a result of a changing hydroclimate and tectonics. Samples were collected from this region by Neil Griffis and Neil Tabor between March 2019 and April 2021. The data were collected at the University of California, Davis and the University of Texas, Austin between April 2019 and August 2021.

These data are laboratory reflectance measurements conducted on a suite of altered mafic and ultramafic rocks. Visible-Near InfraRed (VNIR) and Short-Wave InfraRed (SWIR) reflectance measurements were made (~0.4 – 2.5 microns) using an artificial light source connected to an Analytical Spectral Devices (ASD) spectrometer. Spectra from a total of 91 samples were measured and analyzed, representing 33 samples collected from the Josephine Peridotite in the Klamath Mountains of northern California and Southern Oregon,12 samples from the Yukon-Tanana region of Alaska, and 46 samples from various ultramafic units in the southern Appalachian Mountains of Virginia, North Carolina, South Carolina, and Georgia. For many samples, both fresh and weathered surfaces were measured. The data were obtained in support of developing alteration indices to guide critical mineral resource and carbon dioxide mineralization assessments.