Filters: Tags: Stillwater (X) > partyWithName: Allen K Andersen (X)

Filters Date Range Past year (0) Past month (0) Past week (0) Past day (0) Custom range... To   Search Contacts Michael L Zientek Geology, Minerals, Energy, and Geophysics Science Center U.S. Geological Survey U.S. Geological Survey - ScienceBase Energy and Minerals Heather L Parks Gary Wyss Categories Data (2) Tag Types Theme (2) Place (2) USGS Scientific Topic Keyword (2) Harvest Set (2) Tag Schemes Common geographic areas (2) USGS Thesaurus (2) Lithologic classification of geologic map units (2) ISO 19115 Topic Category (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 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