Major-oxide and trace-element geochemical data from rocks collected in 2019 for the Eastern Tanacross project, Tanacross and part of Nabesna quadrangles, Alaska

Description

During the 2019 field season, geologists from the Alaska Division of Geological & Geophysical Surveys (DGGS) conducted 1:100,000-scale geologic mapping and sampling of a 1,900-square-mile area of the eastern Tanacross Quadrangle. The area lies approximately 15 miles east of Tok and 12 miles north of Northway, Alaska. The area is of present and historical interest for its potential mineral resources, including porphyry copper-molybdenum-gold, intrusion-related gold, volcanogenic massive sulfides, and rare-earth-element enriched mineralization. This dataset provides major-oxide and trace-element geochemical data from rock samples collected throughout the map area. The results include six samples with gold in excess of 0.030 parts per million (ppm) in several different locations, including a sample with 0.068 ppm Au (19JEA004) collected near Honks, a sample with 0.064 ppm Au (19RN359) from a silicified and tourmaline- and pyrite-altered dike near Mount Fairplay, and a sample with 0.063 ppm Au and 35.8 ppm Ag (19TJN005) collected about half a mile northeast of Move. Additionally, a sample from a tourmaline-altered dike from a road cut near Mount Fairplay has 66.9 ppm Ag (19RN372), and a sample of a tourmaline-altered wall rock surrounding the dike contains 26.7 ppm Ag and 1,220 ppm Pb (19RN371). Samples collected at Mount Fairplay are particularly enriched in rare earth elements (REE), reaching almost 1,000 ppm total REE (samples: 19KS368, 19AW318). The analytical data tables associated with this report are available through the Alaska Geochemistry database (https://maps.dggs.alaska.gov/geochem). For a direct link to this data release, see http://doi.org/10.14509/30267.

Resources

Name Format Description Link
0 CSDGM IMPORT ERROR: No digtinfo/formcont https://doi.org/10.14509/30267
0 https://doi.org/10.14509/30267
0 https://doi.org/10.14509/30268
0 https://doi.org/10.14509/30463
0 https://doi.org/10.14509/30429
0 https://doi.org/10.14509/30414
0 https://doi.org/10.14509/30683
0 https://doi.org/10.14509/30734
0 https://doi.org/10.14509/30732

Tags

  • deep creek
  • gold prospect
  • trace metals
  • methods
  • damundtali lake
  • resource information
  • plutons
  • resources
  • sample location
  • yellow water creek
  • base metals
  • oreo prospect
  • ores
  • mineral resources
  • mcarthur creek
  • pushbush prospect
  • mineral localities
  • mineral assessment
  • major oxides
  • mineral deposit
  • mining
  • big creek
  • minerals
  • ladue prospect
  • mccord creek
  • heavy metals
  • geologic
  • analyses
  • ore deposit
  • mount fairplay
  • bedrock
  • gardiner creek
  • geology
  • chemistry
  • bedrock geology
  • strategic minerals
  • economic geology
  • metasedimentary rocks
  • igneous rocks
  • ladue river
  • metals
  • geochemistry
  • non-metals
  • trace geochemical
  • critical minerals
  • minor oxides
  • analyses and sampling
  • resource assessment
  • goodrich prospect
  • mineral development
  • geochemical data
  • trace elements
  • plutonic rocks
  • swamp creek
  • geochemical surveys
  • beaver creek
  • moosehorn ridge
  • honks prospect
  • rare earth elements
  • metavolcanic rocks
  • lab methods
  • scottie creek
  • metamorphic rocks
  • exploration
  • logging cabin creek
  • mount fairplay prospect
  • mineralogy
  • chicken creek
  • volcanic rocks
  • analytical results
  • mineral prospect
  • analytical lab results
  • economic study

Topics

  • Local Government

Categories