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Unnamed (lower Slate Creek)

Occurrence in Alaska, United States with commodity Mercury
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Geologic information

Identification information

Deposit ID 10307256
Record type Site
Current site name Unnamed (lower Slate Creek)

Geographic coordinates

Geographic coordinates: -159.93282, 60.92932 (WGS84)
Relative position This occurrence is on the southwest side of Slate Creek, about 4 miles upstream of the confluence of Slate Creek with the Tuluksak River. The map site is in the SW1/4 of sec. 21, T 10 N, R 60 W, of the Seward Meridian. It is locality 5 of Frost (1990).
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Geographic areas

Country State
United States Alaska

Commodities

Commodity Importance
Mercury Primary

Comments on the commodity information

  • Gangue = Carbonate

Materials information

Materials Type of material
Quartz Gangue

Alteration

  • (Local) Quartz and carbonate replacement of serpentinite.

Mineral occurrence model information

Model code 179
USGS model code 27c
Deposit model name Silica-carbonate Hg

Nearby scientific data

(1) -159.93282, 60.92932
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Comments on the geologic information

  • Geologic Description = Frost (1990) reported that discontinuous lenses of silica-carbonate rock are present along the Golden Gate fault near where it crosses Slate Creek, an east tributary to the Tuluksak River (Box and others, 1993). Quartz and several generations of carbonate viens, in many cases enclosing relict fragments of serpentinite, make up the silica-carbonate rock. Samples from this locality (Frost, 1990, table 1, locality 5) contain 1.9 to more than 36 ppm Hg.
  • Age = Not known. Postdates or accompanies deformation of the mid-Cretaceous Kuskokwim Group along the Golden Gate fault.

Economic information

Economic information about the deposit and operations

Development status Occurrence

Comments on exploration

  • Status = Inactive

Mining district

District name Aniak

Comments on the workings information

  • Workings / Exploration = Reconnaissance surface observation and geochemical sampling has occurred at this site.

Reference information

Links to other databases

Agency Database name Acronym Record ID Notes
USGS Alaska Resource Data File ARDF BH025

Bibliographic references

  • Deposit

    Frost, T.P., 1990, Geology and geochemistry of mineralization in the Bethel quadrangle, southwestern Alaska, in Goldfarb, R. J., Nash, J. T., and Stoeser, J. W., eds., Geochemical studies in Alaska by the U.S. Geological Survey, 1989: U.S. Geological Survey Bulletin 1950, p. C1-C9.

  • Deposit

    Box, S.E, Moll-Stalcup, E.J., Frost, T.P., and Murphy, J.M., 1993, Preliminary geologic map of the Bethel and southern Russian Mission quadrangles, southwestern Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-2226-A, 20 p., scale 1:250,000.

Comments on the references

  • Primary Reference = Frost, 1990

General comments

Subject category Comment text
Deposit Model Name = Silica-carbonate Hg (Cox and Singer, 1986; model 27c).

Reporter information

Type Date Name Affiliation Comment
Reporter 24-MAR-01 Travis L. Hudson Applied Geology