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The Geologic Map Index of Alaska (Map Index) is an online, interactive web mapping application that provides access to an actively growing geographic index of geology-related maps of Alaska and adjacent areas. This online research tool provides the locations and outlines of most DGGS and U.S. Geological Survey (USGS) geologic and geophysical maps of Alaska in a single, interactive web map. It allows searches of the map database by geographic area of interest, keywords, themes, publishing agency, dates, and other criteria. The search results provide links to DGGS's comprehensive, multi-agency publications database, where users may view and download publications for free. No other geographic index of Alaska geologic...
Tags: Alaska Statewide Maps,
Alaska Statewide Quadrangle,
Alaska, State of,
Analytical Results,
Canada, All tags...
Energy Resources,
Engineering Geology,
Environmental,
Geochemical Data,
Geologic Hazards,
Geologic Map,
Geologic Materials,
Geology,
Geophysics,
Mineral Resources,
Russia,
geoscientificInformation, Fewer tags
The State of Alaska's Strategic and Critical Minerals (SCM) Assessment project, a State-funded Capital Improvement Project (CIP), is designed to evaluate Alaska's statewide potential for SCM resources. The SCM Assessment is being implemented by the Alaska Division of Geological & Geophysical Surveys (DGGS), and involves obtaining new airborne-geophysical, geological, and geochemical data. For the geochemical part of the SCM Assessment, thousands of historical geochemical samples from DGGS, U.S. Geological Survey (USGS), and U.S. Bureau of Mines archives are being reanalyzed by DGGS using modern, quantitative, geochemical-analytical methods. The objective is to update the statewide geochemical database to more clearly...
Tags: Alaska, State of,
Analyses,
Analyses and Sampling,
Anchorage Quadrangle,
Chemistry, All tags...
Critical Minerals,
Economic Geology,
Economic Study,
Geochemical Data,
Geochemical Surveys,
Geochemistry,
Geology,
Mineral Assessment,
Mineral Deposit,
Mineral Development,
Mineral Localities,
Mineral Prospect,
Mineral Resources,
Minerals,
Non-Metals,
Platinum Group Elements,
Precious Metals,
Rare Earth Elements,
Ree,
Resource Assessment,
Resource Information,
Resources,
Sample Location,
Sediment,
Strategic Minerals,
Strategic and Critical Minerals Assessment Project,
Stream Sediments,
Trace Elements,
Trace Geochemical,
Trace Metals,
Valdez Quadrangle,
geoscientificInformation, Fewer tags
From June 12-21, 2017, the Alaska Division of Geological & Geophysical Surveys (DGGS) geologists carried out geologic mapping and geochemical sampling in the northeastern Tanacross D-1, and parts of the C-1, and D-2 quadrangles. The project area lies within the Yukon-Tanana Uplands, and encompasses the boundary between Fortymile and Lake George assemblages. It includes porphyry copper-molybdenum-gold deposits and prospects including: Taurus, Fishhook (also known as SW Pika), and Pika Canyon, and is adjacent to the Fortymile Mining District to the north. Highlights of this geochemical report include sampling and characterization of the Pika Canyon, Fishhook, and Taurus prospects. This dataset contains four samples...
Tags: Analyses,
Analyses and Sampling,
Analytical Lab Results,
Analytical Results,
Base Metals, All tags...
Chemistry,
Copper,
Critical Minerals,
Dewey Creek,
Divide Mountain,
Economic Geology,
Economic Study,
Exploration,
Fishhook,
Fortymile Mining District,
Geochemical Data,
Geochemical Surveys,
Geochemistry,
Geologic,
Geology,
Gold,
Lab Methods,
Lead,
Liberty Creek,
Major Oxides,
Metals,
Methods,
Mineral Assessment,
Mineral Deposit,
Mineral Localities,
Mineral Prospect,
Mineral Resources,
Minerals,
Mining,
Minor Oxides,
Non-Metals,
Ore Deposit,
Ores,
Pika Canyon Prospect,
Porphyry,
Precious Metals,
Prospecting Sites,
Rare Earth Elements,
Ree,
Resource Assessment,
Resource Information,
Resources,
Sample Location,
Silver,
Stream Sediments,
Tanacross Quadrangle,
Taurus Prospect,
Trace Elements,
Trace Geochemical,
Trace Metals,
geoscientificInformation, Fewer tags
40Ar/39Ar analyses were performed on igneous rocks from the Ray Mountains area of west-central Alaska. The plutonic samples have ages from about 89 Ma to 109 Ma, while the volcanic samples show ranges from about 30 Ma to 64 Ma. The three volcanic samples fall into two age groups: the younger sample, a basalt, has an age of about 30 Ma, while the two older, rhyolitic samples fall between 58 Ma and 64 Ma. Analyses were performed by the University of Alaska Fairbanks Geochronology Laboratory, and results were reported by Paul Layer and Jeff Benowitz. Products included in this data release are: a summary of sample collection method; the laboratory report, analytical data tables and associated metadata; and plots of...
Tags: 40Ar/39Ar,
Age Dates,
Analyses,
Analyses and Sampling,
Analytical Lab Results, All tags...
Analytical Results,
Ar-Ar,
Bedrock,
Bedrock Geology,
Bettles Quadrangle,
Geochronology,
Geology,
Lab Methods,
Mineral Assessment,
Mineral Deposit,
Mineral Resources,
Ray Mountains,
Sample Location,
Strategic and Critical Minerals Assessment Project,
geoscientificInformation, Fewer tags
This report and digital data release presents 82 new rock geochemical analyses on historic U.S. Bureau of Mines (USBM) samples. These samples were originally collected by the USBM as part of their critical and strategic minerals project, which investigated tin occurrences associated with the Ohio Creek pluton, south-central Alaska. Historic USBM sample materials were retrieved by DGGS from the DGGS Geologic Materials Center (GMC), where the USBM samples were transferred as part of the federally funded Minerals Data and Information Rescue in Alaska (MDIRA) program in the late 1990s and early 2000s. The text and analytical data and tables associated with this report are being released in digital format as PDF files...
Tags: Analyses and Sampling,
Base Metals,
Critical Minerals,
Economic Geology,
Economic Study, All tags...
Exploration,
Geochemical Data,
Geochemical Surveys,
Geochemistry,
Geology,
Heavy Metals,
Mineral Assessment,
Mineral Deposit,
Mineral Development,
Mineral Localities,
Mineral Prospect,
Mineral Resources,
Minerals,
Non-Metals,
Platinum Group Elements,
Precious Metals,
Rare Earth Elements,
Ree,
Resource Assessment,
Resource Information,
Resources,
Strategic Minerals,
Strategic and Critical Minerals Assessment Project,
Trace Elements,
Trace Geochemical,
Trace Metals,
geoscientificInformation, Fewer tags
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
This report and digital data release presents 90 new geochemical analyses on historic U.S. Bureau of Mines (USBM) samples, including 56 rock, 16 sediment, 5 soil, and 12 heavy mineral concentrate (pan concentrate) samples, as well as 1 sample of indeterminate type. Some of these samples were originally collected by the USBM as part of their mineral investigations in the Porcupine River drainage, northeastern Alaska, and a portion of the samples were collected as part of the National Uranium Resource Evaluation. Historic USBM sample materials were retrieved by DGGS from the DGGS Geologic Materials Center (GMC), where the USBM samples were transferred as part of the federally funded Minerals Data and Information Rescue...
Tags: Analyses and Sampling,
Base Metals,
Critical Minerals,
Economic Geology,
Economic Study, All tags...
Exploration,
Geochemical Surveys,
Geochemistry,
Geology,
Heavy Metals,
Mineral Assessment,
Mineral Deposit,
Mineral Development,
Mineral Localities,
Mineral Prospect,
Mineral Resources,
Minerals,
Non-Metals,
Platinum Group Elements,
Precious Metals,
Rare Earth Elements,
Ree,
Resource Assessment,
Resource Information,
Resources,
Strategic Minerals,
Strategic and Critical Minerals Assessment Project,
Trace Elements,
Trace Geochemical,
Trace Metals,
geoscientificInformation, Fewer tags
The State of Alaska's Strategic and Critical Minerals (SCM) Assessment project, a State-funded Capital Improvement Project (CIP), is designed to evaluate Alaska's statewide potential for SCM resources. The SCM Assessment is being implemented by the Alaska Division of Geological & Geophysical Surveys (DGGS), and involves obtaining new airborne-geophysical, geological, and geochemical data. For the geochemical part of the SCM Assessment, thousands of historical geochemical samples from DGGS, U.S. Geological Survey (USGS), and U.S. Bureau of Mines archives are being reanalyzed by DGGS using modern, quantitative, geochemical-analytical methods. The objective is to update the statewide geochemical database to more clearly...
Tags: Alaska, State of,
Analyses,
Analyses and Sampling,
Anchorage Quadrangle,
Chemistry, All tags...
Critical Minerals,
Economic Geology,
Economic Study,
Geochemical Data,
Geochemical Surveys,
Geochemistry,
Geology,
Healy Quadrangle,
Mineral Assessment,
Mineral Deposit,
Mineral Development,
Mineral Localities,
Mineral Prospect,
Mineral Resources,
Minerals,
Mount Hayes Quadrangle,
Nabesna Quadrangle,
Non-Metals,
Platinum Group Elements,
Precious Metals,
Rare Earth Elements,
Ree,
Resource Assessment,
Resource Information,
Resources,
Sample Location,
Sediment,
Strategic Minerals,
Strategic and Critical Minerals Assessment Project,
Stream Sediments,
Tanacross Quadrangle,
Trace Elements,
Trace Geochemical,
Trace Metals,
geoscientificInformation, Fewer tags
This report presents 40Ar/39Ar step-heating geochronology results for igneous and metamorphic rocks from the Alaska Division of Geological & Geophysical Surveys' (DGGS) Wrangellia Mineral Assessment project, part of a multi-year effort focusing on improving the publicly available geoscientific information for the western Wrangellia terrane. The samples described in this report were selected and analyzed to improve our understanding of the geology and structural history of the Wrangellia Mineral Assessment project area. A metagabbro rock sample returned a Late Triassic crystallization age consistent with regional ages for Nikolai Greenstone-related magmatism; however, the two amphibole separates ages do not overlap,...
Tags: 40Ar/39Ar,
Analyses,
Analyses and Sampling,
Analytical Lab Results,
Analytical Results, All tags...
Ar-Ar,
Basalt,
Bedrock,
Bedrock Geology,
Copper,
Crystals,
Geochronology,
Geologic,
Geology,
Greenstone,
Hayes,
Hornblende,
Igneous,
Igneous Rocks,
Interpretation,
Lab Methods,
Methods,
Mica,
Mineral Composition,
Mineral Resources,
Mineralogy,
Minerals,
Mount Hayes Quadrangle,
Muscovite,
Plutonic Rocks,
Porphyry,
Resources,
Rocks,
Sample Location,
Strategic Minerals,
Strategic and Critical Minerals Assessment Project,
Stratigraphy,
Structural Geology,
Talkeetna,
Talkeetna Mountains,
Talkeetna Mountains Quadrangle,
Thrust,
Volcanic Rocks,
geoscientificInformation, Fewer tags
This report and digital data release presents 209 new geochemical analyses on historic U.S. Bureau of Mines (USBM) samples, including 90 rock, 9 stream sediment, 14 soil, and 96 heavy mineral concentrate (pan concentrate) samples. These samples were originally collected by the USBM as part of their search for radioactive mineral deposits in the northern Darby Mountains, eastern Seward Peninsula, Alaska Historic USBM sample materials were retrieved by DGGS from the DGGS Geologic Materials Center (GMC), where the USBM samples were transferred as part of the federally funded Minerals Data and Information Rescue in Alaska (MDIRA) program in the late 1990s and early 2000s. The text and analytical data and tables associated...
Tags: Analyses and Sampling,
Base Metals,
Critical Minerals,
Economic Geology,
Economic Study, All tags...
Exploration,
Geochemical Surveys,
Geochemistry,
Geology,
Heavy Metals,
Mineral Assessment,
Mineral Deposit,
Mineral Development,
Mineral Localities,
Mineral Prospect,
Mineral Resources,
Minerals,
Non-Metals,
Platinum Group Elements,
Precious Metals,
Rare Earth Elements,
Ree,
Resource Assessment,
Resource Information,
Resources,
Strategic Minerals,
Strategic and Critical Minerals Assessment Project,
Trace Elements,
Trace Geochemical,
Trace Metals,
geoscientificInformation, Fewer tags
This report and digital data release presents 12 new geochemical analyses on historic U.S. Bureau of Mines (USBM) samples, including 6 rock, 4 stream sediment, and 2 heavy mineral concentrate (pan concentrate) samples. These samples were originally collected by the USBM to follow up reported tungsten anomalies in the VABM Bend area, Charley River and Eagle quadrangles, east-central Alaska. Historic USBM sample materials were retrieved by DGGS from the DGGS Geologic Materials Center (GMC), where the USBM samples were transferred as part of the federally funded Minerals Data and Information Rescue in Alaska (MDIRA) program in the late 1990s and early 2000s. The text and analytical data and tables associated with this...
Tags: Analyses and Sampling,
Base Metals,
Critical Minerals,
Economic Geology,
Economic Study, All tags...
Exploration,
Geochemical Surveys,
Geochemistry,
Geology,
Heavy Metals,
Mineral Assessment,
Mineral Deposit,
Mineral Development,
Mineral Localities,
Mineral Prospect,
Mineral Resources,
Minerals,
Non-Metals,
Platinum Group Elements,
Precious Metals,
Rare Earth Elements,
Ree,
Resource Assessment,
Resource Information,
Resources,
Strategic Minerals,
Strategic and Critical Minerals Assessment Project,
Trace Elements,
Trace Geochemical,
Trace Metals,
geoscientificInformation, Fewer tags
U-Pb analyses were performed on igneous rocks from the Ray Mountains area of west-central Alaska. These new age analyses will allow us to better evaluate the geochronology of the granitic rocks that are the apparent source of the alluvial REE and tin resources. The plutonic samples have ages ranging from 98.0 +/- 0.9 Ma to 111.6 +/- 1.0 Ma. The sample location coordinates and analytical data tables associated with this report are available in digital format as comma-separated value (CSV) files.
Tags: Age Dates,
Analyses,
Analyses and Sampling,
Analytical Lab Results,
Analytical Results, All tags...
Bedrock,
Bedrock Geology,
Bettles Quadrangle,
Geochronology,
Geology,
Igneous Rocks,
Lab Methods,
Metals,
Mineral Assessment,
Mineral Deposit,
Mineral Resources,
Minerals,
Plutonic,
Polymetallic,
Rare Earth Elements,
Ray Mountains,
Sample Location,
Strategic and Critical Minerals Assessment Project,
Tin,
U-Pb,
Zircon,
geoscientificInformation, Fewer tags
The State of Alaska's Strategic and Critical Minerals (SCM) Assessment project, a State-funded Capital Improvement Project (CIP), is designed to evaluate Alaska's statewide potential for SCM resources. The SCM Assessment is being implemented by the Alaska Division of Geological & Geophysical Surveys (DGGS), and involves obtaining new airborne-geophysical, geological, and geochemical data. For the geochemical part of the SCM Assessment, thousands of historical geochemical samples from DGGS, U.S. Geological Survey (USGS), and U.S. Bureau of Mines archives are being reanalyzed by DGGS using modern, quantitative, geochemical-analytical methods. The objective is to update the statewide geochemical database to more clearly...
Tags: Alaska, State of,
Analyses,
Analyses and Sampling,
Anchorage Quadrangle,
Chemistry, All tags...
Critical Minerals,
Economic Geology,
Economic Study,
Geochemical Data,
Geochemical Surveys,
Geochemistry,
Geology,
Juneau Quadrangle,
Mineral Assessment,
Mineral Deposit,
Mineral Development,
Mineral Localities,
Mineral Prospect,
Mineral Resources,
Minerals,
Non-Metals,
Platinum Group Elements,
Precious Metals,
Rare Earth Elements,
Ree,
Resource Assessment,
Resource Information,
Resources,
Sample Location,
Sediment,
Skagway Quadrangle,
Strategic Minerals,
Strategic and Critical Minerals Assessment Project,
Stream Sediments,
Trace Elements,
Trace Geochemical,
Trace Metals,
geoscientificInformation, Fewer tags
The State of Alaska's Strategic and Critical Minerals (SCM) Assessment project, a State-funded Capital Improvement Project (CIP), is designed to evaluate Alaska's statewide potential for strategic and critical mineral resources. The SCM Assessment project is being implemented by the Alaska Division of Geological & Geophysical Surveys (DGGS), and involves obtaining new airborne-geophysical, geological, and geochemical data. For the geochemical part of the SCM Assessment project, thousands of geochemical-sample analyses and locations from historical U.S. Bureau of Mines (USBM), U.S. Geological Survey (USGS), Bureau of Land Management (BLM), DGGS, Alaska Territorial Department of Mines, Alaska Division of Mines and...
Tags: Alaska Statewide Quadrangle,
Alaska, State of,
Analyses,
Analyses and Sampling,
Analytical Lab Results, All tags...
Analytical Results,
Chemistry,
Critical Minerals,
Economic Geology,
Economic Study,
Exploration,
Geochemical Data,
Geochemical Surveys,
Geochemistry,
Geologic,
Geology,
Lab Methods,
Major Oxides,
Metals,
Methods,
Mineral Assessment,
Mineral Localities,
Mineral Prospect,
Mineral Resources,
Minerals,
Mining,
Minor Oxides,
Non-Metals,
Ores,
Precious Metals,
Rare Earth Elements,
Ree,
Resource Assessment,
Resource Information,
Resources,
Sample Location,
Strategic Minerals,
Strategic and Critical Minerals Assessment Project,
Trace Elements,
Trace Geochemical,
Trace Metals,
geoscientificInformation, Fewer tags
The State of Alaska's Strategic and Critical Minerals (SCM) Assessment project, a State-funded Capital Improvement Project (CIP), is designed to evaluate Alaska's statewide potential for SCM resources. The SCM Assessment is being implemented by the Alaska Division of Geological & Geophysical Surveys (DGGS), and involves obtaining new airborne-geophysical, geological, and geochemical data. For the geochemical part of the SCM Assessment, thousands of historical geochemical samples from DGGS, U.S. Geological Survey (USGS), and U.S. Bureau of Mines archives are being reanalyzed by DGGS using modern, quantitative, geochemical-analytical methods. The objective is to update the statewide geochemical database to more clearly...
Tags: Alaska, State of,
Analyses,
Analyses and Sampling,
Anchorage Quadrangle,
Chemistry, All tags...
Critical Minerals,
Economic Geology,
Economic Study,
Geochemical Data,
Geochemical Surveys,
Geochemistry,
Geology,
Hughes Quadrangle,
Mineral Assessment,
Mineral Deposit,
Mineral Development,
Mineral Localities,
Mineral Prospect,
Mineral Resources,
Minerals,
Non-Metals,
Platinum Group Elements,
Precious Metals,
Rare Earth Elements,
Ree,
Resource Assessment,
Resource Information,
Resources,
Sample Location,
Sediment,
Shungnak Quadrangle,
Strategic Minerals,
Strategic and Critical Minerals Assessment Project,
Stream Sediments,
Trace Elements,
Trace Geochemical,
Trace Metals,
geoscientificInformation, Fewer tags
The Alaska Geologic Data Index (AGDI) is an actively growing index of unpublished geologic data collected throughout the state of Alaska. The records captured range from project documents to imagery to geochemical data. The index is designed to contain data and documents pertaining to all related fields of geology, including oil and gas, geologic engineering, minerals industry, scientific data, and agency archives. The index can refer to paper or digital information. Agencies, institutions, and the public are encouraged to contribute unpublished data to this dataset. Data owners can pick from three levels of data availability. These include: public - the data records in AGDI are visible to the public, and the archived...
Tags: Alaska, State of,
Analytical Results,
Energy Resources,
Engineering Geology,
Environmental, All tags...
Geochemical Data,
Geologic Hazards,
Geologic Materials,
Geology,
Geophysics,
Mineral Resources,
geoscientificInformation, Fewer tags
Geologists from the Alaska Division of Geological & Geophysical Surveys (DGGS) Mineral Resources Section conducted four weeks of helicopter-supported mapping and fieldwork from June 26 through July 24, 2013. The Styx River project in the Lime Hills C-1 Quadrangle was part of the State-funded Airborne Geophysical/Geological Mineral Inventory (AGGMI) program as part of the State's Strategic Minerals Assessment Project, an initiative designed to evaluate Alaska's potential for rare-earth elements, PGEs, and other similarly supply-challenged resources. The Styx River project area has active and ongoing mineral exploration for deposit types including porphyry copper/molybdenum/gold, reduced intrusion-related gold, and...
Tags: Alaska Range,
Aluminum,
Antimony,
Arsenic,
Barium, All tags...
Basalt,
Base Metals,
Bedrock,
Beryllium,
Bismuth,
Cadmium,
Calcium,
Cerium,
Cesium,
Chalcopyrite,
Chlorite,
Chromium,
Cobalt,
Copper,
Critical Minerals,
Dysprosium,
Economic Geology,
Erbium,
Europium,
Exploration,
Felsic,
Fluorine,
Gadolinium,
Galena,
Gallium,
Geochemical Data,
Geochemical Surveys,
Geochemistry,
Geology,
Germanium,
Gold,
Granite,
Greisen,
Hafnium,
Heavy Metals,
Holmium,
Hornfels,
Igneous Rocks,
Iron,
Lime Hills Quadrangle,
Lode,
Lutetium,
Magnesium,
Major Oxides,
Manganese,
McGrath Quadrangle,
Metals,
Mineral Assessment,
Mineral Deposit,
Mineral Localities,
Mineral Resources,
Minor Oxides,
Molybdenum,
Neodymium,
Nickel,
Niobium,
Non-Metals,
Palladium,
Phosphorus,
Platinum,
Platinum Group Elements,
Plutons,
Potassium,
Precious Metals,
Promethium,
Rubidium,
Selenium,
Silica,
Silver,
Sodium,
Sphalerite,
Strategic Minerals,
Strategic and Critical Minerals Assessment Project,
Strontium,
Sulfides,
Sulfur,
Talkeetna Quadrangle,
Tantalum,
Thallium,
Thorium,
Tin,
Titanium,
Tourmaline,
Trace Elements,
Trace Metals,
Tungsten,
Tyonek Quadrangle,
Uranium,
Vanadium,
Volcanic,
Zinc,
Zirconium,
geoscientificInformation, Fewer tags
This report and digital data release presents 40 new geochemical analyses on historic U.S. Bureau of Mines (USBM) samples, including 33 rock and 7 heavy mineral concentrate (pan concentrate) samples. These samples were originally collected by the USBM as part of their critical and strategic minerals project, which investigated the rare-earth-element and uranium mineral potential of the Zane Hills area, northwestern Alaska. Historic USBM sample materials were retrieved by DGGS from the DGGS Geologic Materials Center (GMC), where the USBM samples were transferred as part of the federally funded Minerals Data and Information Rescue in Alaska (MDIRA) program in the late 1990s and early 2000s. The text and analytical...
Tags: Analyses and Sampling,
Base Metals,
Critical Minerals,
Economic Geology,
Economic Study, All tags...
Exploration,
Geochemical Surveys,
Geochemistry,
Geology,
Heavy Metals,
Mineral Assessment,
Mineral Deposit,
Mineral Development,
Mineral Localities,
Mineral Prospect,
Mineral Resources,
Minerals,
Non-Metals,
Platinum Group Elements,
Precious Metals,
Rare Earth Elements,
Ree,
Resource Assessment,
Resource Information,
Resources,
Strategic Minerals,
Strategic and Critical Minerals Assessment Project,
Trace Elements,
Trace Geochemical,
Trace Metals,
geoscientificInformation, Fewer tags
This report and digital data release presents 131 new geochemical analyses on historic U.S. Bureau of Mines (USBM) samples, including 86 rock and 42 heavy mineral concentrate (pan concentrate) samples, as well as 3 samples of indeterminate type. Some of these samples were originally collected by the USBM from the Ray River watershed, and the Kanuti and Hodzana Rivers uplands, central Alaska, and a portion of the samples were collected as part of the National Uranium Resource Evaluation. Historic USBM sample materials were retrieved by DGGS from the DGGS Geologic Materials Center (GMC), where the USBM samples were transferred as part of the federally funded Minerals Data and Information Rescue in Alaska (MDIRA) program...
Tags: Analyses and Sampling,
Base Metals,
Critical Minerals,
Economic Geology,
Economic Study, All tags...
Exploration,
Geochemical Surveys,
Geochemistry,
Geology,
Heavy Metals,
Mineral Assessment,
Mineral Deposit,
Mineral Development,
Mineral Localities,
Mineral Prospect,
Mineral Resources,
Minerals,
Non-Metals,
Platinum Group Elements,
Precious Metals,
Rare Earth Elements,
Ree,
Resource Assessment,
Resource Information,
Resources,
Strategic Minerals,
Strategic and Critical Minerals Assessment Project,
Trace Elements,
Trace Geochemical,
Trace Metals,
geoscientificInformation, Fewer tags
In 2016, geologists from the Alaska Division of Geological & Geophysical Surveys (DGGS) and University of Alaska Fairbanks 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). This report provides results of stream-sediment sampling for trace-element geochemistry. An initial suite of sediment samples was collected from streams draining known gold occurrences, including the Stibnite Creek and Noah prospects, and numerous prospects in the White Gold area. These samples were split in half and the two splits were sieved to -200 mesh and -80 mesh, respectively. The splits were then both analyzed to determine...
Tags: Analyses,
Analyses and Sampling,
Analytical Lab Results,
Analytical Results,
Chemistry, All tags...
Dall Prospect,
Eagle Prospect,
Economic Geology,
Exploration,
Geochemical Data,
Geochemical Surveys,
Geochemistry,
Geology,
Gold,
Heavy Metals,
Jacqueline Prospect,
Lab Methods,
Metals,
Mineral Assessment,
Mineral Deposit,
Mineral Localities,
Mineral Prospect,
Mineral Resources,
Placer,
Placer Gold,
Precious Metals,
STATEMAP Project,
Shalosky Prospect,
Stream Sediments,
Tanacross Quadrangle,
Tok,
Tok Mining District,
Tok River,
Trace Elements,
Trace Geochemical,
Trace Metals,
geoscientificInformation, Fewer tags
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