09a8d810-e109-4467-b7ad-820c2ea25457_source eng; USA utf8 dataset Simone Montayne (907)451-5020 3354 College Road Fairbanks AK 99709-3707 USA pointOfContact 2013-09-12 ISO 19115 Geographic Information - Metadata ISO 19115:2003/Cor.1:2006(E) 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 2013-01-01 publication Alaska Division of Geological & Geophysical Surveys Fairbanks Alaska, United States publisher Bachmann, E.N. originator Blessington, M.J. originator Freeman, L.K. originator Newberry, R.J. originator Tuzzolino, A.L. originator Wright, T.C. originator Wylie, William originator http://www.dggs.alaska.gov/pubs/id/25386 ASCII TABULAR FILES, REPORT Raw Data File RDF 2013-5 4 p. 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 designed to evaluate Alaska's potential for these resources. Highlights of this sampling project include documenting patterns of variable REE enrichment in the granites, and identifying bedrock samples of greisen and oxidized breccias with enriched REE, and stream sediments with enriched REEs that have a pattern of variation that mimics that of the granites. 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 designed to evaluate Alaska's potential for these resources. Analyses were paid for by the State of Alaska's Strategic and Critical Minerals Assessment CIP, which is funded by the Alaska State Legislature and managed by the State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys. completed James Weakland Alaska Division of Geological & Geophysical Surveys GIS Analyst (907)451-5029 (907)451-5020 3354 College Road Fairbanks AK 99709-3707 USA dggsgis@alaska.gov 8 am to 4:30 pm, Monday through Friday, except State holidays pointOfContact notPlanned Aluminum Antimony Arsenic Augen Gneiss Barium Basalt Base Metals Batholith 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 Gneiss Gold Granite Greisen Hafnium Heavy Metals Holmium Hornfels Igneous Rocks Iron Lanthanide Elements Lanthanum Lode Lutetium Magnesium Major Oxides Manganese Metabasite Metals Metamorphic Rocks Metasedimentary rocks Metavolcanic rocks Mineral Assessment Mineral Deposit Mineral Localities Mineral Resources Minor Oxides Molybdenum Monazite Neodymium Nickel Niobium Non-Metals Palladium Pan Concentrates Phosphorus Placer Placer Gold Platinum Platinum Group Elements Potassium Praseodymium Precious Metals Promethium Rare Earth Elements Ree Resource Assessment Resources Rhyolite Rubidium Samarium Scheelite Schist Selenium Silica Silver Sodium Soil Chemistry Soil Sampling Sphalerite Strategic Minerals Stream Sediments Strontium Sulfides Sulfur Tantalum Thallium Thorium Tin Titanium Tourmaline Trace Elements Trace Geochemical Trace Metals Tungsten Uranium Vanadium Volcaniclastics Ytterbium Zeunerite Zinc Zirconium theme Alaska Division of Geological & Geophysical Surveys Beaver Quadrangle Bettles Quadrangle Bonanza Creek Caribou Mountain Coal Creek Dall River Dalton Highway Fish Creek Fleshlanana Creek Fort Hamlin Hills Gishna Creek Gobblers Knob Halu Creek Ishtalitna Creek Kanuti Hot Springs Kanuti Kilolitna River Kanuti River Kilo Hot Springs Koyuk Mining District Livengood Quadrangle Lower Ray Hot Springs McQuesten Creek Mount Henry Eakin Mount Tozi No Name Creek Prospect Creek Ray Mountains Ray River Ray River Hot Springs Sithylemenkat Lake Tanana Quadrangle Tokusatatquaten Lake Torment Creek Trans-Alaska Pipeline Upper Ray Hot Springs place Alaska Division of Geological & Geophysical Surveys Angayucham Terrane Angayucham Thrust Bonanza Pluton Coal Creek Pluton Fort Hamlin Hills Pluton Hodzana Pluton Hot Springs Pluton Kanuti Pluton Ray Mountains Pluton Ray River Basalt Ray River Pluton Ruby Terrane Sithylemenkat Pluton Tozitna Terrane stratum Alaska Division of Geological & Geophysical Surveys Cretaceous Devonian Mesozoic Miocene Paleozoic Phanerozoic Proterozoic Quaternary Tertiary temporal Walker, J.D., Geissman, J.W., Bowring, S.A, and Babcock, L.E., comp., 2012, Geologic Time Scale v. 4.0: Geological Society of America The State of Alaska makes no expressed or implied warranties (including warranties for merchantability and fitness) with respect to the character, functions, or capabilities of the electronic data or products or their appropriateness for any user's purposes. In no event will the State of Alaska be liable for any incidental, indirect, special, consequential, or other damages suffered by the user or any other person or entity whether from the use of the electronic services or products or any failure thereof or otherwise. In no event will the State of Alaska's liability to the Requestor or anyone else exceed the fee paid for the electronic service or product. otherRestrictions Use Constraints: Any hard copies or published datasets utilizing these datasets shall clearly indicate their source. If the user has modified the data in any way, the user is obligated to describe the types of modifications the user has made. The user specifically agrees not to misrepresent these datasets, nor to imply that changes made by the user were approved by the State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys. The State of Alaska makes no express or implied warranties (including warranties for merchantability and fitness) with respect to the character, functions, or capabilities of the electronic data or products or their appropriateness for any user's purposes. In no event will the State of Alaska be liable for any incidental, indirect, special, consequential, or other damages suffered by the user or any other person or entity whether from the use of the electronic services or products or any failure thereof or otherwise. In no event will the State of Alaska's liability to the Requestor or anyone else exceed the fee paid for the electronic service or product. otherRestrictions Access Constraints: This report, map, and/or dataset is available directly from the State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys (see contact information below). Second annual Alaska strategic and critical minerals summit 2013-01-01 publication Alaska Division of Geological & Geophysical Surveys Fairbanks Alaska, United States publisher Adleman, J.N. originator Bluemink, Elizabeth originator http://www.dggs.alaska.gov/pubs/id/25095 Miscellaneous Publication MP 151 17 p crossReference Geochemical trace-element and rare-earth element data from rock samples collected in 2012 on Annette Island, southeast Alaska 2013-01-01 publication Alaska Division of Geological & Geophysical Surveys Fairbanks Alaska, United States publisher Stevens, D.S.P. originator Werdon, M.B. originator Wright, T.C. originator http://www.dggs.alaska.gov/pubs/id/24975 Raw Data File RDF 2013-2 2 p crossReference Rare-Earth Elements: A brief overview including uses, worldwide resources, and known occurrences in Alaska 2011-01-01 publication Alaska Division of Geological & Geophysical Surveys Fairbanks Alaska, United States publisher Szumigala, D.J. originator Werdon, M.B. originator http://www.dggs.alaska.gov/pubs/id/22262 Information Circular IC 61 12 p crossReference Geochemical, major-oxide, minor-oxide, trace-element, and rare-earth-element data from rock, stream sediment, and pan-concentrate samples collected in 2011 in the William Henry Bay area, Juneau C-4 and D-4 quadrangles, Southeast Alaska 2012-01-01 publication Alaska Division of Geological & Geophysical Surveys Fairbanks Alaska, United States publisher Werdon, M.B. originator Gallagher, P.E. originator Blessington, M.J. originator http://www.dggs.alaska.gov/pubs/id/23843 Raw Data File RDF 2012-2 2 p crossReference vector eng; USA geoscientificInformation -151.717019 -149.756801 65.627367 66.79450811 2012-01-01 This data distribution package consists of multiple CSV files which provide sample locations and descriptions, geochemical data, analytical methods, and instrumentation detection limits for analysis of the samples collected for this project. For each analytical data type, a primary table presents the analytical results, sample locations, and other information about each sample. A secondary table provides detailed information about the methods and detection limits of the instrumentation used to analyze the data. The DGGS metadata standard extends the FGDC standard to include elements that are required to facilitate our internal data management. These elements, referred to as "layers," group and describe files that have intrinsic logical or topological relationships. Attribute information for each layer is included in this metadata file under the "Entity_and_Attribute_Information" section. The metadata layer provides the metadata, codesets, or other documentation files applicable to all layers. The data layer(s) are titled: >pan-con-trace-element-ree: trace-element and rare-earth-element analysis of pan-concentrate samples >rock-major-minor-oxide-trace-element-ree: major- and minor-oxide, trace-element, and rare-earth-element analysis of pulverized rock samples >rock-trace-element-ree: trace-element and rare-earth-element analysis of pulverized rock samples >slab-xrf-major-minor-oxide-trace-element: major- and minor-oxide and trace-element analysis of rock-slab samples >stream-sed-trace-element-ree: trace-element and rare-earth-element analysis of stream-sediment and soil samples >sample-location-details-no-suitable-media: list of visited locations in which samples were not collected for reasons noted true ASCII tabular files unknown Alaska Division of Geological & Geophysical Surveys (907)451-5020 (907)451-5050 3354 College Road Fairbanks AK 99709-3707 USA dggspubs@alaska.gov 8 am to 4:30 pm, Monday through Friday, except State holidays Please view our website (http://www.dggs.alaska.gov) for the latest information on available data. Please contact us using the e-mail address provided above when possible. distributor Contact DGGS for current pricing Free download http://www.dggs.alaska.gov/pubs/id/25386 ASCII tabular files CSDGM IMPORT ERROR: No digtinfo/formcont information dataset Horizontal Positional Accuracy Report Location data were collected using Trimble TSC3 WAAS-enabled GPS devices running ArcPad 10. Data were downloaded directly from the ArcPad .AXF file into a field geodatabase set up in ArcMap. WAAS-enabled GPS devices have a reported error of about 1 meter. Sample points that were placed in the database without GPS have an estimated error ranging from 20 to 170 meters. Latitude and longitude were calculated from the GPS's UTM zone values in ArcMap using the 'calculate geometry' function and are reported using the NAD 27 datum. All of the samples collected were analyzed by methods appropriate to the sample media. This publication also includes location coordinates of potential sample sites in which samples were not collected for reasons noted. All of the samples collected were analyzed by methods appropriate to the sample media. This publication also includes location coordinates of potential sample sites in which samples were not collected for reasons noted. not applicable This lineage was generated by the FGDC CSDGM to 19139 transformation Preliminary research and fieldwork - 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. This location was targeted based on previously published datasets and reports which documented concentrations of base metals, tin, tungsten, chromium, rare-earth elements (REEs), and uranium in the project area. Fieldwork consisted of stream-sediment, pan-concentrate, and rock sampling. 2012-01-01T00:00:00 Trace-element and rare-earth-element analysis of pan-concentrate samples - Pan-concentrate samples were dried at DGGS using a hot plate and glass petri dishes, which were washed after each use to prevent cross-contamination. Dried samples were weighed to the nearest 0.1 gram and then split manually into two equal-sized, homogeneous portions using a Sepor(TM) micro splitter, which was washed after each use. One split was retained by DGGS for mineralogical studies, the other split was submitted to ALS Minerals (formerly ALS Chemex), and underwent the PREP-31 package, where the sample was logged, dried, weighed, and the entire sample was pulverized to a nominal 85% passing 75 microns (-180 mesh). Samples were analyzed for trace elements and rare earth elements using: Inductively Coupled Plasma - Atomic Emission Spectroscopy (HF-HNO3-HClO4-HCl digestion), Inductively Coupled Plasma - Mass Spectroscopy (Lithium metaborate fusion - HNO3-HCl dissolution), and/or Inductively Coupled Plasma - Atomic Emission Spectroscopy (Fire assay - aqua regia digestion). The method used to analyze each element is listed in the detection limits table. For high-grade and mineralized rare earth samples, high sample to volume ratios are utilized in the Inductively Coupled Plasma - Atomic Emission Spectroscopy analysis to improve precision. Certified high grade rare earth reference materials are used as part of the standard protocol. See ALS documentation for a more detailed discussion of the methodology. 2012-01-01T00:00:00 Major- and minor-oxide, trace-element, and rare-earth-element analysis of pulverized rock samples - Igneous and meta-igneous rocks showing little alteration or weathering were collected for major-oxide, minor-oxide, and trace-element analyses to determine bulk rock composition of igneous and meta-igneous lithologies, or to identify the tectonic setting of a sample's protolith from petrogenetically important trace elements. These samples were prepared by ALS Minerals in accordance with their PREP-31 package which involves crushing the entire sample to less than 70 percent passing -10 mesh (2 mm), then splitting off 250 grams and pulverizing the split to better than 85 percent passing 75 microns. Samples were analyzed using: X-Ray Fluorescence (Lithium Borate Fusion), and/or Inductively Coupled Plasma - Mass Spectroscopy (Lithium metaborate fusion - HNO3-HCl dissolution). See ALS documentation for a more detailed discussion of the methodology. 2012-01-01T00:00:00 Trace-element and rare-earth-element analysis of pulverized rock samples - Rock samples of visibly mineralized rock, or rocks exhibiting features associated with mineralization, were preferentially collected and analyzed for geochemical trace elements and rare earth elements. These samples were prepared by ALS Minerals in accordance with their PREP-31 package which involves crushing the entire sample to less than 70 percent passing -10 mesh (2 mm), then splitting off 250 grams and pulverizing the split to better than 85 percent passing 75 microns. Samples were analyzed for trace elements and rare earth elements using: Inductively Coupled Plasma - Mass Spectroscopy (Lithium metaborate fusion - HNO3-HCl dissolution), X-Ray Fluorescence (Lithium Borate Fusion), Inductively Coupled Plasma - Atomic Emission Spectroscopy (Fire assay - aqua regia digestion), Inductively Coupled Plasma - Atomic Emission Spectroscopy (HF-HNO3-HClO4-HCl digestion), and/or Inductively Coupled Plasma - Atomic Emission Spectroscopy (HNO3-HClO4-HF+HCl digestion). See ALS documentation for a more detailed discussion of the methodology. 2012-01-01T00:00:00 Major- and minor-oxide and trace-element analysis of rock-slab samples - Fine-grained igneous and meta-igneous rocks showing little alteration or weathering were collected for major-oxide, minor-oxide, and trace-element petrographic analysis using "slab" X-ray fluorescence (slab XRF) in order to determine bulk rock composition of igneous and meta-igneous lithologies, or to identify the tectonic setting of a sample's protolith from petrogenetically important trace elements. See report manuscript for a more detailed discussion of the methodology. 2012-01-01T00:00:00 Trace-element and rare-earth-element analysis of stream-sediment and soil samples - Stream-sediment sample locations were selected prior to fieldwork to fulfill two different needs: (1) to fill data gaps between previously collected samples with known anomalous values for REE and related elements; and (2) to fill gaps between previously collected samples. Priority was given to samples in closer proximity to the Dalton Highway Trans-Alaska Pipeline System corridor and to samples in drainage basins in or near the mapped extent of granitic plutons. In the field, specific sample locations were selected by visual inspection from the helicopter, and were based on the availability of sample material and a suitable landing zone. Specific sites along streams/rivers at the sample location were then selected, in order of preference from highest to lowest, as follows: gravel/cobble-armored riffles, gravel/cobble-armored point bars, log/boulder/plunge-pool eddies, point bars, overbank flood deposits, and moss mats. Stream-sediment samples were collected with a shovel. Cobbles and larger pebbles were manually screened out by hand, and the remaining material was placed into a permeable cloth sample bag and air dried at camp. To ensure a sufficient volume of fine sediment, 7-inch-wide by 12-inch-long sample bags were filled to capacity. Stream-sediment samples were air dried by DGGS, and then submitted to ALS Minerals (formerly ALS Chemex), and underwent the PREP-41 package, where the sediment were logged, air-dried at low temperature, and weighed. The samples were then sieved to a particle size of -180 microns (-80 mesh). Both fractions were retained, and the -80-mesh fraction was crushed and used for analysis. Some samples lacking sufficient fine material were screened to -35-mesh prior to crushing. Samples were analyzed for trace elements and rare earth elements using: Inductively Coupled Plasma - Mass Spectroscopy (Lithium metaborate fusion - HNO3-HCl dissolution), Inductively Coupled Plasma - Atomic Emission Spectroscopy (Fire assay - aqua regia digestion), and/or Inductively Coupled Plasma - Atomic Emission Spectroscopy (HF-HNO3-HClO4-HCl digestion). See ALS documentation for a more detailed discussion of the methodology. 2012-01-01T00:00:00 List of visited locations in which samples were not collected for reasons noted - In some cases, targeted sample sites were found to be inaccessible or did not provide suitable sampling media. To facilitate future research in the area, we compiled a list of these sites. 2012-01-01T00:00:00 Version 1.1 note: Additional XRF-10 lithium borate fusion analytical results were added for samples 12AT021A, 12AT022A, 12AT049, 12AT050, 12BW110, 12BW121, 12CW043, 12CW053, 12CW095, 12LF237A, 12LF238A, 12LF286, 12LF317A. 2019-01-01T00:00:00 Source Contribution: Preliminary research and fieldworkSource Type: paper 63360 Investigation of tin-rare earth element placers in the Ray River watershed 1992-01-01 publication U.S. Bureau of Mines United States publisher Barker, J.C. originator http://www.dggs.alaska.gov/pubs/id/21385 Open-File Report OFR 34-91 63 p., 1 sheet, scale 1:63,360 1992-01-01 Source Contribution: Preliminary research and fieldworkSource Type: paper Tin reconnaissance of the Kanuti and Hodzana Rivers uplands, central Alaska 1986-01-01 publication U.S. Bureau of Mines United States publisher Barker, J.C. originator Foley, J.Y. originator http://www.dggs.alaska.gov/pubs/id/21287 Information Circular IC 9104 27 p 1986-01-01 Source Contribution: Preliminary research and fieldworkSource Type: paper Podiform chromite occurrences in the Caribou Mountain and lower Kanuti River areas, central Alaska, part I: reconnaissance investigations 1983-01-01 publication U.S. Bureau of Mines United States publisher Foley, J.Y. originator McDermott, M.M. originator http://www.dggs.alaska.gov/pubs/id/21279 Information Circular IC 8915 8 p., 1 sheet 1983-01-01 Source Contribution: Preliminary research and fieldworkSource Type: digital data National geochemical database - Reformatted data from the National Uranium Resource Evaluation (NURE) Hydrogeochemical and Stream Sediment Reconnaissance (HSSR) Program 1997-01-01 publication U.S. Geological Survey United States publisher Smith, S.M. originator http://www.dggs.alaska.gov/pubs/id/25462 Open-File Report OF 97-492 1997-01-01 otherRestrictions Metadata Use Constraints: If the user has modified the data in any way they are obligated to describe the types of modifications they have performed in the supporting metadata file. User specifically agrees not to imply that changes they made were approved by the Alaska Department of Natural Resources or Division of Geological & Geophysical Surveys. unknown This metadata was automatically generated from the FGDC Content Standard for Digital Geospatial Metadata standard (version FGDC-STD-001-1998) using the 2019-08-12T11:11:00 version of the FGDC CSDGM to ISO 19139 transform. Simone Montayne (907)451-5020 3354 College Road Fairbanks AK 99709-3707 USA pointOfContact