Analyses of historic U.S. Bureau of Mines rock and heavy mineral concentrate samples for geochemical trace-element and rare-earth element data--Ray Mountains and Kanuti-Hodzana uplands area, Alaska

Re-analyses of sample pulps and bulk rejects from historic USBM rock and heavy-mineral-concentrate samples were conducted by the Alaska Division of Geological & Geophysical Surveys (DGGS) as part of the State of Alaska's Strategic and Critical Minerals Assessment project, which is designed to evaluate Alaska's potential for these resources. The objective of this resource assessment is to expand the state's geochemical database by obtaining and publishing modern, quantitative geochemical analyses for historic USBM samples, where available. Highlights of this re-analysis project include heavy mineral concentrates with up 7,220 ppm Sn, 5,870 ppm Cr, and 17,000 ppm Mn.

Tags: Aluminum, Antimony, Arsenic, Barium, Basalt, All tags... Base Metals, Beaver Quadrangle, Bedrock, Beryllium, Bettles Quadrangle, Bismuth, Bonanza Creek, Cadmium, Calcium, Caribou Mountain, Cerium, Cesium, Chlorite, Chromium, Coal Creek, Cobalt, Copper, Critical Minerals, Dall River, Dalton Highway, Dysprosium, Economic Geology, Erbium, Europium, Exploration, Felsic, Fish Creek, Fluorine, Fort Hamlin Hills, Gadolinium, Galena, Gallium, Geochemical Data, Geochemical Surveys, Geochemistry, Germanium, Gobblers Knob, Gold, Granite, Greisen, Hafnium, Heavy Metals, Holmium, Igneous Rocks, Iron, Ishtalitna Creek, Kanuti Hot Springs, Kanuti Kilolitna River, Kanuti River, Kilo Hot Springs, Koyukuk Mining District, Lanthanide Elements, Lanthanum, Livengood Quadrangle, Lode, Lower Ray Hot Springs, Lutetium, Magnesium, Manganese, McQuesten Creek, Metabasite, Metals, Metamorphic Rocks, Metasedimentary rocks, Metavolcanic rocks, Mineral Assessment, Mineral Deposit, Mineral Resources, Molybdenum, Monazite, Mount Henry Eakin, Mount Tozi, Neodymium, Nickel, Niobium, No Name Creek, Non-Metals, Palladium, Pan Concentrates, Phosphorus, Placer, Placer Gold, Platinum, Platinum Group Elements, Potassium, Praseodymium, Precious Metals, Promethium, Prospect Creek, Rare Earth Elements, Ray Mountains, Ray River, Ray River Hot Springs, Ree, Resource Assessment, Resources, Rubidium, Samarium, Scheelite, Schist, Selenium, Silica, Silver, Sithylemenkat Lake, Sodium, Sphalerite, Strategic Minerals, Stream Sediments, Strontium, Sulfides, Sulfur, Tanana Quadrangle, Tantalum, Thallium, Thorium, Tin, Titanium, Tokusatatquaten Lake, Torment Creek, Tourmaline, Trace Elements, Trace Geochemical, Trace Metals, Trans-Alaska Pipeline, Tungsten, Upper Ray Hot Springs, Uranium, Vanadium, Ytterbium, Zeunerite, Zinc, Zirconium, geoscientificInformation, Fewer tags

Major-oxide and trace-element geochemical data from rocks collected in 2015 in the Tok area, Tanacross A-5, A-6, and parts of adjacent quadrangles, Alaska

The Tok project area is adjacent to the Delta mineral belt volcanogenic massive-sulfide (VMS) district, the Peak gold-silver-copper skarn, and structurally controlled gold and antimony mineralization in the Stibnite Creek and White Gold areas. The project area also includes the Noah prospect, an intrusion-related copper prospect. Whereas the Delta mineral belt has been extensively mapped and explored, the detailed mapping does not continue into the 2015 Tok project area. In this area, only reconnaissance mapping has been conducted. The combination of a lack of detailed mapping, the industry interest in the adjacent areas, and the geophysical data findings prompted the Alaska Division of Geological & Geophysical...

Tags: Analyses, Analyses and Sampling, Analytical Lab Results, Analytical Results, Antimony, All tags... Arsenic, Bedrock Geologic Map, Chemistry, Geochemical Data, Geochemical Surveys, Geochemistry, Gold, Gold Prospect, Lab Methods, Major Oxides, Massive Sulfide Deposit, Massive Sulfide Occurrence, Massive Sulfide Prospect, Massive Sulfides, Metallogenesis, Metamorphic, Metamorphic Deposit, Metamorphic Rocks, Metasedimentary Rocks, Metavolcanic rocks, Minor Oxides, Plutonic Hosted, Polymetallic Vein, Porphyry, Skarn, Tanacross Quadrangle, Tok, Trace Elements, Trace Geochemical, Vein Deposit, Volcanogenic Massive Sulfide, geoscientificInformation, Fewer tags

Geochemical major-oxide, minor-oxide, trace-element, and rare-earth-element data from rocks and streams sediments collected in 2012 in the Ray Mountains area, Beaver, Bettles, Livengood, and Tanana quadrangles, Alaska

Mineral-resources personnel from the Alaska Division of Geological & Geophysical Surveys (DGGS) carried out a helicopter-supported geological and geochemical resource assessment project in the Beaver, Bettles, Livengood, and Tanana quadrangles from June 23 through August 5, 2012. The objectives of DGGS's resource assessment are to improve the trace-element geochemical coverage of selected watersheds; to obtain modern, quantitative geochemical analyses; to understand the petrogenesis of the granites; and to better document established mineral occurrences. Stream-sediment, pan-concentrate, and rock sampling were conducted as part of the State's Rare Earth Elements and Strategic Minerals Assessment project, which is...

Tags: Aluminum, Antimony, Arsenic, Augen Gneiss, Barium, All tags... Basalt, Base Metals, Batholith, Beaver Quadrangle, Bedrock, Beryllium, Bettles Quadrangle, Bismuth, Bonanza Creek, Cadmium, Calcium, Caribou Mountain, Cerium, Cesium, Chalcopyrite, Chlorite, Chromium, Coal Creek, Cobalt, Copper, Critical Minerals, Dall River, Dalton Highway, Dysprosium, Economic Geology, Erbium, Europium, Exploration, Felsic, Fish Creek, Fleshlanana Creek, Fluorine, Fort Hamlin Hills, Gadolinium, Galena, Gallium, Geochemical Data, Geochemical Surveys, Geochemistry, Geology, Germanium, Gishna Creek, Gneiss, Gobblers Knob, Gold, Granite, Greisen, Hafnium, Halu Creek, Heavy Metals, Holmium, Hornfels, Igneous Rocks, Iron, Ishtalitna Creek, Kanuti Hot Springs, Kanuti Kilolitna River, Kanuti River, Kilo Hot Springs, Koyuk Mining District, Lanthanide Elements, Lanthanum, Livengood Quadrangle, Lode, Lower Ray Hot Springs, Lutetium, Magnesium, Major Oxides, Manganese, McQuesten Creek, Metabasite, Metals, Metamorphic Rocks, Metasedimentary rocks, Metavolcanic rocks, Mineral Assessment, Mineral Deposit, Mineral Localities, Mineral Resources, Minor Oxides, Molybdenum, Monazite, Mount Henry Eakin, Mount Tozi, Neodymium, Nickel, Niobium, No Name Creek, Non-Metals, Palladium, Pan Concentrates, Phosphorus, Placer, Placer Gold, Platinum, Platinum Group Elements, Potassium, Praseodymium, Precious Metals, Promethium, Prospect Creek, Rare Earth Elements, Ray Mountains, Ray River, Ray River Hot Springs, Ree, Resource Assessment, Resources, Rhyolite, Rubidium, Samarium, Scheelite, Schist, Selenium, Silica, Silver, Sithylemenkat Lake, Sodium, Soil Chemistry, Soil Sampling, Sphalerite, Strategic Minerals, Stream Sediments, Strontium, Sulfides, Sulfur, Tanana Quadrangle, Tantalum, Thallium, Thorium, Tin, Titanium, Tokusatatquaten Lake, Torment Creek, Tourmaline, Trace Elements, Trace Geochemical, Trace Metals, Trans-Alaska Pipeline, Tungsten, Upper Ray Hot Springs, Uranium, Vanadium, Volcaniclastics, Ytterbium, Zeunerite, Zinc, Zirconium, geoscientificInformation, Fewer tags

Major-oxide and trace-element geochemical data from rocks collected in the Tok River area, Tanacross A-5 and A-6 quadrangles, Alaska in 2016

Geologists from the Alaska Division of Geological & Geophysical Surveys (DGGS) and University of Alaska carried out a two-part geologic mapping and geochemical sampling project in the Tok River area of the Tanacross A-5 and A-6 quadrangles (June 12-26 and July 8-26). The Tok River area is adjacent to the Delta mineral belt volcanogenic massive-sulfide (VMS) district, the Peak gold-silver-copper skarn, and the structurally controlled gold and antimony mineralization in the Stibnite Creek and White Gold areas. The Tok River project area includes the Noah (also called Hona) prospect, an intrusion-related copper prospect. The combination of insufficient detailed geologic mapping, historical and current industry interest...

Tags: Analyses, Analyses and Sampling, Analytic Signal, Analytical Lab Results, Analytical Results, All tags... Antimony, Arsenic, Bedrock, Chemistry, Dall Prospect, Eagle Prospect, Geochemical Data, Geochemical Surveys, Geochemistry, Gold, Gold Prospect, Jacqueline Prospect, Lab Methods, Major Oxides, Massive Sulfide Deposit, Massive Sulfide Occurrence, Massive Sulfide Prospect, Massive Sulfides, Metallogenesis, Metals, Metamorphic Rocks, Metasedimentary Rocks, Metavolcanic rocks, Mineral Assessment, Mineral Localities, Mineral Prospect, Minor Oxides, Noah Prospect, Parton Prospect, Shalosky Prospect, Tanacross Quadrangle, Tok, Tok Mining District, Tok River, Trace Elements, Trace Geochemical, Volcanogenic Massive Sulfide, geoscientificInformation, Fewer tags

Chert geochemistry discriminant analysis and K-meas cluster analysis: Rampart Project area, Tanana B-1 Quadrangle, east-central Alaska

A pilot study using discriminant analysis on major oxide and minor element data from 67 chert samples in the Rampart area, southeastern Tanana and southwest Livengood Quadrangles, western Yukon-Tanana Upland, Alaska, generally indicates a unique geochemical signature for the cherts of a given unit.Chert samples from five known type locales were used as standards of comparison: 1)Livengood Dome Chert (Ordovician), 2)Amy Creek unit (Proterozoic to early Paleozoic), 3)Rampart Group (Mississippian to Triassic), 4)Troublesome Creek unit (Devonian), and 5)Permian-Triassic clastic unit (associated with the Triassic-dated gabbro). Samples from the above units were compared to chert from Tanana B-1 area-units of unknown...

Tags: Barium, Bedrock Geologic Map, Chemistry, Chert, Geochemical Data, All tags... Geochemical Surveys, Geochemistry, Livengood Quadrangle, Major Oxides, Metasedimentary rocks, Methods, Phosphorus, Potassium, Rampart Mining District, Rampart-Manley Mining District, Rare Earth Elements, Rubidium, Silica, Strontium, Tanana Quadrangle, Titanium, Trace Elements, Vanadium, Yttrium, Zirconium, Fewer tags

Data release for the geologic map of the upper Arkansas River valley region, north-central Colorado

This 1:50,000-scale geologic map represents a compilation of the most recent geologic studies of the upper Arkansas River valley, between Leadville and Salida, Colorado. The valley is structurally controlled by an extensional fault system that forms part of the prominent northern Rio Grande rift, an intra-continental region of crustal extension. This work also incorporates new detailed geologic mapping of poorly understood areas within the map area and reinterprets previously studied areas, aided by lidar data that covers 59 percent of the map area. The mapped region extends into the Proterozoic metamorphic and intrusive rocks in the Sawatch Range west of the valley and the Mosquito Range to the east. Paleozoic...

Categories: Data; Tags: 207Pb/206Pb zircon age, 40Ar/39Ar age, Arkansas River, Balltown, Balltown placer gold mining areas, All tags... Belle of Granite Mine, Big Union Creek, Bishop ash, Black Cloud Mine, Black Mountain, Browns Canyon, Browns Canyon fluorspar mining district, Browns Creek, Buckskin Gulch, Buena Vista, Buffalo Creek, Buffalo Peaks, Bull Lake glaciation, Cache Creek, California Gulch, California Mine, Centerville, Chaffee County, Chalk Creek, Clear Creek, Clear Creek Reservoir, Colorado, Cottonwood Creek, Dry Union Gulch, Eagle County, Eagle River, East Fork Arkansas River, Eddy Creek, Elephant Rock, Fremont County, Front Range, Garfield, Garfield Mine, Garfield mining district, Gordon Mine, Granite, Granite mining district, Granite placer gold mining areas, Hayden Gulch, Homestake Reservoir, Iowa Gulch, Johnson Village, Lake County, Lake Creek, Langhoff Gulch, Lava Creek B ash, Leadville, Leadville mining district, Lilly Mine, London Mine, Malta, Maysville, Mesozoic rocks, Morrison Creek, Mosquito Range, Mount Aetna, Mount Antero, Mount Antero mining district, Mount Princeton, Mount Shavano, Mount Yale, Paleozoic rocks, Park County, Pine Creek, Pinedale glaciation, Pitkin County, Poncha Springs, Proterozoic rocks, Quaternary deposits, Rio Grande rift, Riverside, Rock Creek, Ruby Mine, Ruby Mountain, San Juan Mountains, Sangre de Cristo Range, Sawatch Range, Sedalia Mine, Sedalia copper-zinc mining district, South Arkansas River, South Park, South Platte River, Squaw Creek, St. Kevin mining district, Structural Geology, Sugar Loaf mining district, Sugarloaf Mountain, Tennessee Creek, Tertiary rocks, Triad Ridge, Trout Creek, Trout Creek Pass, Trout Creek paleovalley, Tumble Creek, Turquoise Lake, Twin Lakes Reservoir, Twin Lakes mining district, Two Bits mining district, USA, USGS Science Data Catalog (SDC), United States, Western Alma mining district, Weston Pass, Weston Pass mining district, Yankee Blade Mine, alluvial deposits, alluvium, andesite, artificial-fill deposits, augen gneiss, basalt, basin-fill deposits, breccia, colluvium, copper, cosmogenic surface-exposure age, dacite, debris flow, debris-flow deposits, diamicton, diorite, eolian deposits, fan deposits, fault, faulting, fluorspar, fluvial deposits, gabbro, glacial deposits, glacial flood deposits, glacial flood gravel, glaciofluvial deposits, gneiss, gold, graben, granite, granitic gneiss, granodiorite, gravel, hydrologic hazards, hypabyssal rhyolite, intrusive rock, lahar deposit, lamprophyre, landslide deposits, latite, lava, lead, leucogranite, leucogranite gneiss, lidar imagery, man-made deposits, mass-movement deposits, mass-movement hazards, metabasalt, metagabbro, metaigneous rocks, metasedimentary rocks, metavolcanic rocks, microtonalite, mine, mine-waste deposits, mineral deposits, mining district, monzodiorite, monzogranite, monzonite, mud-flow deposits, neotectonics, ore, outwash, outwash gravel, peat deposits, pegmatite, periglacial, placer gold, placer-tailings deposits, porphyry, pre-Bull Lake glaciation, quartz diorite, quartz latite, quartzite, rhyodacite, rhyolite, rift, rock-glacier deposits, sackungen, sand and gravel resources, scarp, schist, sedimentary rocks, seismic hazards, silver, smelter-slag deposits, soil, surficial deposits, talus deposits, till, tuff, volcanic ash, volcanic breccia, volcanic rock, weathering, wetland deposits, zinc, Fewer tags