4d7779f0-3212-47df-9454-54dc02cf63db_source eng; USA utf8 dataset Metadata manager (907)451-5020 3354 College Road Fairbanks AK 99709-3707 USA pointOfContact 2013-09-06 ISO 19115 Geographic Information - Metadata ISO 19115:2003/Cor.1:2006(E) 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 AK, USA publisher Stevens, D.S.P. originator Werdon, M.B. originator Wright, T.C. originator http://dx.doi.org/10.14509/24975 DOCUMENT, DIGITAL DATA DOWNLOAD Raw Data File RDF 2013-2 2 p. Personnel from the Alaska Division of Geological & Geophysical Surveys (DGGS) conducted a reconnaissance rock sampling project from April 30 to May 4, 2012, to obtain modern, quantitative geochemical analyses to characterize select mafic-ultramafic rocks and one chalcopyrite-bearing quartz vein sample from Yellow Hill on Annette Island, in the Ketchikan Quadrangle, southeastern Alaska. Highlights of this sampling project include mafic-ultramafic rock samples with up to 0.079 ppm platinum (Pt) and 0.123 ppm palladium (Pd), and a quartz vein with 2.83 percent copper (Cu) and 0.155 ppm gold (Au). This work was conducted as a component of the State of Alaska's Strategic and Critical Minerals Assessment Project, which was initiated to evaluate Alaska's potential for critical mineral resources. The DGGS would like to thank the Metlakatla Indian Community for permission to collect samples and publish the associated geochemical assays. 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. Funding for DGGS travel and field time was provided by the MapTEACH program, funded by the U.S. Department of Education, Alaska Native Education Program (Award Number S356A090040). 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 Geochemical Data Geochemical Surveys Geochemistry Rare Earth Elements Trace Geochemical Trace Metals Strategic Minerals theme Alaska Division of Geological & Geophysical Surveys Ketchikan Quadrangle place Alaska Division of Geological & Geophysical Surveys 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). 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 AK, USA publisher Werdon, M.B. originator Gallagher, P.E. originator Blessington, M.J. originator http://dx.doi.org/10.14509/23843 DOCUMENT, DIGITAL DATA DOWNLOAD Raw Data File RDF 2012-2 2 p crossReference vector eng; USA geoscientificInformation -131.5801 -131.5517 55.0864 55.1778 2012-01-01 2013-01-01 In addition to the data tables, this distribution package includes ALS Chemex-provided PDFs that describe their sample preparation and geochemical analysis procedures. 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. This dataset is described as a single layer. Attribute information for the layer is included in this metadata file under the "Entity_and_Attribute_Information" section. The layer is titled: >rock-trace-element-ree: This data distribution package consists of two CSV files which provide sample locations and descriptions, geochemical data, analytical methods, and instrumentation detection limits for trace element and rare earth element analysis of rock samples. 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://dx.doi.org/10.14509/24975 ASCII tabular files CSDGM IMPORT ERROR: No digtinfo/formcont information dataset Horizontal Positional Accuracy Report Location coordinates were obtained using Garmin eTrex Legend H and Garmin GPSmap 76S handheld GPS units with a typical error of 7 m or less. All samples were analyzed for ore-related trace elements and the full suite of rare-earth elements. All samples were analyzed for ore-related trace elements and the full suite of rare-earth elements. Not applicable This lineage was generated by the FGDC CSDGM to 19139 transformation Sample collection - DGGS staff and student field assistants collected select ultramafic rock samples and a chalcopyrite-bearing quartz vein sample for geochemical analysis. Location coordinates were obtained using Garmin eTrex Legend H and Garmin GPSmap 76S handheld GPS units with a typical error of 7 m or less. 2012-01-01T00:00:00 Sample preparation - Samples were submitted to ALS Chemex, where the rock samples were logged in the tracking system, weighed, dried, and finely crushed to better than 70 percent passing through a 2 mm (Tyler 9 mesh, U.S. Std. No. 10) screen. A split of up to 250 g was taken and pulverized to better than 85 percent passing through a 75 micron (Tyler 200 mesh, U.S. Std. No. 200) screen. 2012-01-01T00:00:00 Analytical methods - All samples were analyzed for ore-related trace elements and the full suite of rare-earth elements. In addition to the internal quality-control program at ALS Chemex, DGGS monitored analysis quality by inserting ore-geochemical-pulp standards with known compositions into the sample roster for every sample batch. Trace-element compositions were determined using inductively coupled plasma, atomic emission spectroscopy (ICP-AES) following a four-acid digestion process. Rare-earth- and additional trace-element compositions were determined using inductively coupled plasma, mass spectroscopy (ICP-MS). ICP-MS samples were dissolved in acid following lithium borate fusion. Platinum (Pt), palladium (Pd), and gold (Au) values were obtained from a 30-gram sample using inductively coupled plasma-atomic emission spectroscopy (ICP-AES) following fire assay. The sample from the Erbelding prospect was outside the range for copper for this method, and was re-analyzed using gravimetry (ICP-AES). Detection limits for each of the reported elemental values obtained by the various methods are provided in the digital data distribution files. 2012-01-01T00:00:00 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. Metadata manager (907)451-5020 3354 College Road Fairbanks AK 99709-3707 USA pointOfContact