Filters: partyWithName: Allen K Andersen (X) > partyWithName: U.S. Geological Survey (X) > partyWithName: Geology, Minerals, Energy, and Geophysics Science Center (X)

Filters Date Range Past year (1) Past month (0) Past week (0) Past day (0) Custom range... To   Search Contacts U.S. Geological Survey - ScienceBase Energy and Minerals Michael L Zientek Heather L Parks Danielle A Olinger More... Categories Data (3) Tag Types Theme (3) Place (3) USGS Scientific Topic Keyword (3) Harvest Set (3) Tag Schemes none (1) USGS Thesaurus (3) Common geographic areas (3) Lithologic classification of geologic map units (2) ISO 19115 Topic Category (2) Geographic Names Information System (GNIS) (1) View Results as: JSON ATOM CSV

TIMA-X bright phase analysis of platinum-group minerals in selected samples from the Chrome and Iron Mountain areas of the Stillwater Complex, Montana Sulfide- and chromite-bearing samples of the Basal and Ultramafic series of the Stillwater Complex are known to contain elevated concentrations of platinum-group elements (PGE). Thin sections were prepared from drill core and surface samples from the Chrome and Iron Mountain areas. Core samples are from exploration drilling programs by AMAX in the 1960s and 1970s and Beartooth Platinum in 2004-2007. The degree to which PGE occur in the rocks as discrete platinum-group minerals was investigated using a TESCAN Integrated Mineral Analyser (TIMA-X) based on a TESCAN MIRA 3 field-emission scanning electron microscope coupled with an EDAX energy-dispersive spectrometer. TIMA-X combines backscattered electron (BSE) imaging... Categories: Data; Tags: Chrome Mountain, Economic Geology, Mineral Resources, Montana, Stillwater, All tags... Sweet Grass, USGS Science Data Catalog (SDC), Ultramafic intrusive rock, palladium, platinum, Fewer tags Lithogeochemistry and images of selected drill core samples from the Mineral Hill alkaline complex, Wyoming This data release contains analytical data and images for a suite of drill core samples from the Mineral Hill alkaline complex (MHAC), northeastern Wyoming. Geochemistry data include major and trace element analytical results for 103 alkaline igneous rock samples. Images include hand sample photographs of halved core and full thin section images captured in transmitted, plane-polarized and cross-polarized light. Samples are from two core holes drilled by Humble Oil Company in 1970, and subsequently acquired and stored by Felix Mutschler at Eastern Washington University. The two skeletonized (incomplete) drill cores were acquired by the U.S. Geological Survey Geology, Minerals, Energy, and Geophysics Spokane office... Categories: Data; Tags: Alkaline silicate rocks, Au, Crook County, Economic Geology, Fire assay, All tags... GGGSC, GMEG, Geochemistry, Geology, Geophysics, and Geochemistry Science Center, Geology, Minerals, Energy, and Geophysics Science Center, Gold, ICP-MS, ICP-OES, INAA, Inductively coupled plasma-mass spectrometry, Inductively coupled plasma-optical emission spectrometry, Instrumental neutron activation analysis, MRP, Major elements, Mineral Hill, Mineral Resource Program, Mineral Resources, PGEs, Platinum Group Elements, Trace elements, U.S. Geological Survey, USGS, USGS Science Data Catalog (SDC), United States, WDXRF, Wavelength dispersive X-ray fluorescence, Whole-rock, Wyoming, core analysis, geochemistry, geoscientificInformation, image collections, mass spectroscopy, neutron activation analysis, photography, x-ray fluorescence, Fewer tags Lithogeochemistry of selected surface and drill core samples from the Chrome and Iron Mountain areas of the Stillwater Complex, Montana Sulfide- and chromite-bearing samples of the Basal and Ultramafic series of the Stillwater Complex are known to contain elevated concentrations of chromium, nickel, copper, cobalt, gold, and platinum-group elements (PGE). Drill core and surface samples were collected from the Chrome and Iron Mountain areas for whole rock geochemical analysis, with specific interest in PGE, cobalt, and gold concentrations. Core samples are from exploration drilling programs by AMAX in the 1960s and 1970s and Beartooth Platinum in 2004-2007. Reported whole rock data were measured using the following methods: major elements by wavelength dispersive X-ray fluorescence (WDXRF), 60 trace elements by inductively coupled plasma-optical... Categories: Data; Tags: Chrome Mountain, Economic Geology, Geochemistry, Mineral Resources, Montana, All tags... Peridotite, Pyroxenite, Stillwater, Sweet Grass, USGS Science Data Catalog (SDC), Ultramafic intrusive rock, cobalt, geochemistry, geoscientificInformation, palladium, platinum, Fewer tags