Research Geologist
Geology, Geophysics, and Geochemistry Science Center
Email:
plv@usgs.gov
Office Phone:
303-236-1902
Fax:
303-236-3200
ORCID:
0000-0002-3653-6419
Supervisor:
Andrew G Hunt
|
This U.S. Geological Survey (USGS) data release provides whole rock major, minor, and trace element geochemical data from the fluorine-rich Mount Emmons-Redwell porphyry molybdenum (Climax-type) deposit (Mt. Emmons-Redwell deposit), located approximately 5.6 km (3.5 mi) northwest of Crested Butte, Colorado. The Mt. Emmons-Redwell deposit partly underlies Redwell Basin on the northwest flank of Mount Emmons in the west-central region of the Colorado Mineral Belt. Mineralization of the Mt. Emmons-Redwell deposit occurs at depth as vein, veinlet, stockwork, and fracture-hosted Climax-type mineralization [308 Mt at 0.32% Mo (Galey, 1978; Guarnera and Anderson, 2007)], and is associated with the Mt. Emmons igneous complex....
Categories: Data;
Types: Downloadable,
Map Service,
OGC WFS Layer,
OGC WMS Layer,
Shapefile;
Tags: <1GB,
Climax-type deposit,
Colorado,
Colorado Mineral Belt,
Crested Butte, All tags...
Elk Mountains,
Geology, Geophysics, and Geochemistry Science Center (GGGSC),
Gunnison County,
Mineral Resources Program (MRP),
Mount Emmons,
Mt. Emmons-Redwell deposit,
Oh-be-joyful Creek,
Redwell Basin,
Redwell Creek,
USGS Science Data Catalog (SDC),
United States,
aluminum,
analytical chemistry,
antimony,
arsenic,
atomic emission spectroscopy (AES),
barium,
beryllium,
bismuth,
boron,
cadmium,
calcium,
cerium,
cesium,
chemical analysis,
chromium,
cobalt,
copper,
dysprosium,
economic geology,
erbium,
europium,
exploration geochemistry,
fluorine,
gadolinium,
gallium,
geochemical data,
geochemistry,
geoscientificInformation,
germanium,
hafnium,
holmium,
igneous rocks,
indium,
inductively coupled plasma-optical emission-mass spectroscopy (ICP-OES-MS),
iron,
lanthanum,
lead,
lithium,
lutetium,
magnesium,
manganese,
mass spectroscopy,
mineral deposits,
mineral resources,
molybdenum,
neodymium,
nickel,
niobium,
phosphorus,
plutonic rocks,
porphyry deposit,
potassium,
promethium,
rock chemistry,
rubidium,
samarium,
scandium,
sedimentary rocks,
selenium,
silicon,
silver,
sodium,
strontium,
sulfur,
tantalum,
tellurium,
terbium,
thallium,
thorium,
thulium,
tin,
titanium,
tungsten,
uranium,
vanadium,
wavelength dispersive X-ray fluorescence spectrometry (WDXRF),
x-ray fluorescence,
ytterbium,
yttrium,
zinc,
zirconium, Fewer tags
|
Two synoptic sampling campaigns were conducted near Breckenridge, Colorado, to quantify metal loading to Illinois Gulch, a tributary of the Blue River. The first campaign, conducted in August 2016, was designed to determine the degree to which Illinois Gulch loses water to the underlying mine workings, and to determine the effect of these losses on observed metal loads. The second campaign, conducted in September 2017, was designed to evaluate metal loading within Iron Springs, a subwatershed that was responsible for the majority of the metal loading observed in 2016. A continuous, instream injection of a sodium bromide (NaBr) tracer was initiated at the head of the respective study reaches several days prior to...
Categories: Data;
Tags: Breckenridge Colorado,
Environmental Health,
Geochemistry,
Illinois Gulch,
Summit County, All tags...
USGS Science Data Catalog (SDC),
Water Quality,
Water Resources,
acid mine drainage,
bromide,
headwater stream,
hydrologic tracer,
metal loads,
metals,
mine workings,
slug injection,
synoptic sampling,
tracer dilution, Fewer tags
|
This U.S. Geological Survey (USGS) data release contains analytical data from a suite of rock and mineral samples collected from drill core within the Elk Creek alkaline complex, southeast Nebraska. This complex hosts the Elk Creek carbonatite, a multilithologic carbonatite enriched in niobium, rare earth elements (REEs), scandium, and titanium. Mineralized carbonatites are the world’s primary source of rare earth elements (REEs) and niobium, but only a few deposits are responsible for meeting the current demand of these critical elements such that there is increasing interest in other carbonatites that have the potential to help meet future demands. This study focuses on the Elk Creek carbonatite, the largest...
Categories: Data;
Types: Downloadable,
Map Service,
OGC WFS Layer,
OGC WMS Layer,
Shapefile;
Tags: Economic Geology,
Elk Creek,
Elk Creek carbonatite,
Geochemistry,
Johnson County, All tags...
Mineral Resources,
Nebraska,
Pawnee County,
USGS Science Data Catalog (SDC),
carbonatite,
economic geology,
geochemistry,
geology,
mineral resources,
niobium,
rare earth elements, Fewer tags
|
This data release contains whole-rock major, minor, and trace element geochemical data for carbonatite samples from the Mountain Pass rare earth element (REE) deposit located in southeastern California. The Mountain Pass deposit is the largest REE deposit in the United States and in 2021, produced 43,000 metric tons (expressed as rare-earth-oxide equivalent; U.S. Geological Survey, 2022). Samples include a suite of outcrop samples (2018) and a suite of composite samples (2019). Data are reported in comma-separated values (CSV) files. All column headings and abbreviations are explained in the metadata. Reference U.S. Geological Survey, 2022, Mineral commodity summaries 2022: U.S. Geological Survey, 202 p., https://doi.org/10.3133/mcs2022.
Categories: Data;
Tags: "Mineral Resources"],
California,
Geology, Geophysics, and Geochemistry Science Center,
MRP,
Mineral Resources Program, All tags...
San Bernardino County,
USGS Science Data Catalog (SDC),
["Economic Geology",
carbonatite,
critical minerals,
geochemistry,
mineral resources,
rare earth elements, Fewer tags
|
This data release contains analytical data from a suite of rock samples collected within the Bear Lodge alkaline complex, northeast Wyoming, which hosts the Bear Lodge rare earth element (REE) deposit. Geochemistry data include major and trace element analytical results for 105 samples including alkaline igneous rocks, carbonatites, and weathered and oxidized samples. Samples were collected from surface exposures, a shallow temporary exploration trench, and drill core. Drill core samples are from exploration holes drilled by Rare Element Resources between 2009 and 2013 and from historical drill core from previous exploration companies. Rare earth element mineralization at Bear Lodge is hosted by carbonatite dikes,...
Categories: Data;
Tags: Bear Lodge Mountains,
Bear Lodge intrusive complex,
Crook County,
Economic Geology,
GGGSC, All tags...
Geochemistry,
Geology, Geophysics, and Geochemistry Science Center,
ICP-AES,
ICP-MS,
Inductively Coupled Plasma-Atomic Emission Spectrometry,
Inductively Coupled Plasma-Mass Spectrometry,
MRP,
Mineral Resources,
Mineral Resources Program,
U.S. Geological Survey,
USA,
USGS,
USGS Science Data Catalog (SDC),
United States of America,
Wyoming,
carbonatite,
economic geology,
geochemistry,
geology,
geoscientificinformation,
mass spectroscopy,
metallic mineral resources,
mineral resources,
northeast Wyoming,
rare earth elements, Fewer tags
|
View more...
|
