Research Geologist
Email:
emarsh@usgs.gov
Office Phone:
303-236-2473
Fax:
303-236-3200
ORCID:
0000-0001-5245-9532
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This data release is part of a 2016-2019 study on the geology, geochemistry and geochronology of ore systems in the eastern Yukon-Tanana Upland region, Alaska. Whole rock chemistry was conducted on 185 samples, mostly from Au prospects, with lesser samples from porphyry Cu prospects. Geographically, most samples are from gold prospects near the Pogo Au mine and east to Black Mountain in the Big Delta quadrangle. Fewer samples are from prospects in the Eagle and Tanacross Quadrangles. Samples were submitted to the USGS contract laboratory and analyzed for select trace elements and gold. Sixty elements were determined by inductively coupled plasma-optical emission spectroscopy-mass spectroscopy (ICP-OES-MS), sodium...
Categories: Data;
Types: Downloadable,
Map Service,
OGC WFS Layer,
OGC WMS Layer,
Shapefile;
Tags: Alaska,
Big Delta,
Black Mountain,
Eagle,
Economic Geology, All tags...
GGGSC,
Geochemistry,
Geology, Geophysics and Geochemistry Science Center,
ICP-MS,
MRP,
Mineral Resources,
Mineral Resources Program,
Mount Hayes,
NCCWSC,
Tanacross,
U.S. Geological Survey,
USGS,
USGS Science Data Catalog (SDC),
Yukon-Tanana Upland,
chemical analysis,
economic geology,
geochemistry,
geoscientificInformation,
inductively coupled plasma mass spectrometry,
metallic mineral resources,
mineral deposits,
mineral resources, Fewer tags
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This dataset is a collection of geochemical data on samples from the Stibnite-Yellow Pine district of Idaho. The datasets include: whole rock geochemistry; lead, strontium and neodymium isotope chemistry of sulfides and whole rock samples by isotope dilution-thermal-mass spectrometry (ID-TIMS); in situ sulfur isotope chemistry of sulfides by laser ablation-multi collector-inductively coupled-mass spectrometry (LA-MC-ICP-MS); electron microprobe (EMP) images, cathodoluminescence (CL) images and spectra, along with EMP and laser ablation-inductively coupled-mass spectrometry (LA-ICP-MS) trace element analysis of sulfides and quartz; and fluid inclusion microthermometry and raman. Samples were collected from the surface...
Categories: Data;
Tags: Cinnabar,
GGGSC,
Geochemistry,
Geology, Geophysics, and Geochemistry Science Center,
Hangar Flats, All tags...
Idaho,
MRP,
Mineral Resources Program,
Mineralogy,
Stibnite,
U.S. Geological Survey,
USGS,
USGS Science Data Catalog (SDC),
West End,
Yellow Pine Mine,
arsenopyrite,
economic geology,
economy,
geochemistry,
geoscientificInformation,
gold,
mass spectroscopy,
metallic mineral resources,
mineralogy,
particle-beam spectroscopy,
pyrite,
scanning electron microscopy,
stibnite, Fewer tags
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