Unnamed (headwaters of Rick's Creek)

Prospect in Alaska, United States with commodities Tungsten, Silver, Arsenic, Gold, Copper, Manganese, Antimony, Zinc

Geologic information

Identification information

Deposit ID 10001723
MRDS ID A012507
Record type Site
Current site name Unnamed (headwaters of Rick's Creek)

Geographic coordinates

Geographic coordinates: -144.95286, 64.83972 (WGS84)
Relative position An occurrence noted by Albanese (1984) is located on a ridge in the headwaters of Rick's Creek (BD036). The occurrence is in SW1/4 section 9, T. 1 S., R. 14 E., of the Fairbanks Meridian. This occurrence is situated approximately 1 mile from another occurrence in the headwaters of Rick's Creek (BD041). It was not identified as a separate location by Cobb (1972) or by Cobb and Eberlein (1980).
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Geographic areas

Country State
United States Alaska


Commodity Importance
Tungsten Primary
Silver Secondary
Arsenic Secondary
Gold Secondary
Copper Secondary
Manganese Secondary
Antimony Secondary
Zinc Secondary

Comments on the commodity information

  • Gangue = Carbonate

Materials information

Materials Type of material
Arsenopyrite Ore
Chalcopyrite Ore
Pyrite Ore
Garnet Gangue
Pyroxene Gangue

Nearby scientific data

(1) -144.95286, 64.83972

Comments on the geologic information

  • Geologic Description = The occurrence noted by Albanese (1984) included the analysis of three samples: 1) a sulfide zone containing arsenopyrite, chalcopyrite, and pyrite. A rock sample from a trench in a garnet-diopside skarn contained 518 ppm Cu, 39 ppm Pb, 436 ppm Zn, 0.1 ppm Au, 1.3 ppm Ag, 1 ppm Mo, 222 ppm Sb, 20 ppm Sn, 60 ppm W, greater than 19,800 ppm As, and 686 ppm Mn; 2) an arsenopyrite-, chalcopyrite-, and pyrite-bearing calc-silicate contained 64 ppm Cu, 4 ppm Pb, 50 ppm Zn, 0.1 ppm Au, 0.4 ppm Ag, 2 ppm Mo, 10 ppm Sb, 4 ppm Sn, 900 ppm W, 213 ppm As, and 1,360 Mn; and 3) an arsenopyrite and pyrite bearing calc-silicate contained 462 ppm Cu, 34 ppm Pb, 37 ppm Zn, 4.3 ppm Ag, 1 ppm Mo, 4 ppm Sn, 450 ppm W, 818 ppm As, and 364 ppm Mn. Weber and others (1978) describe the regional bedrock as quartzite, slate, calc-phyllite and marble. The occurrence is located near the contact of a Tertiary to Cretaceous granodiorite to quartz monzonite intrusion.

Economic information

Economic information about the deposit and operations

Development status Prospect
Commodity type Metallic

Mining district

District name Fairbanks

Comments on the workings information

  • Workings / Exploration = Menzie and Foster (1979) noted the mineral occurrence during geologic mapping.

Reference information

Links to other databases

Agency Database name Acronym Record ID Notes
USGS Mineral Resources Data System MRDS A012507
USGS Alaska Resource Data File ARDF BD043

Bibliographic references

  • Deposit

    Weber, F.R., Foster, H.L., Keith, T.E.C., Dusel-Bacon, C., 1978, Preliminary geologic map of the Big Delta quadrangle, Alaska: U.S. Geological Survey Open-File Report 78-529A, 1 sheet, scale 1:250,000.

  • Deposit

    Albanese, M.D., 1984, Geochemical reconnaissance of the upper Chena river area, central Alaska: analytical data on stream sediment, pan concentrate, and rock samples: Alaska Division of Geological and Geophysical Surveys Report of Investigation 84-4, 30 p.

Comments on the references

  • Primary Reference = Albanese,1984

General comments

Subject category Comment text
Deposit Model Name = Skarn

Reporter information

Type Date Name Affiliation Comment
Reporter 26-APR-1999 Cameron S. Rombach Alaska Division of Geological and Geophysical Surveys