Rex Creek

The Rex Creek is a gold mine located in Alaska.

About the MRDS Data:

All mine locations were obtained from the USGS Mineral Resources Data System. The locations and other information in this database have not been verified for accuracy. It should be assumed that all mines are on private property.

Mine Info

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Site Name

Primary: Rex Creek

Commodity

Primary: Gold
Secondary: Copper
Secondary: Antimony

Location

State: Alaska
District: Bonnifield

Land Status

Not available

Holdings

Not available

Workings

Not available

Ownership

Not available

Production

Not available

Deposit

Record Type: Site
Operation Category: Past Producer
Operation Type: Unknown
Years of Production:
Organization:
Significant:

Physiography

Not available

Mineral Deposit Model

Model Name: Placer Au-PGE

Orebody

Not available

Structure

Not available

Alterations

Not available

Rocks

Not available

Analytical Data

Not available

Materials

Ore: Chalcopyrite
Ore: Gold
Ore: Pyrite
Ore: Stibnite

Comments

Comment (Geology): Age = Quaternary placer.

Comment (Exploration): Status = Inactive

Comment (Deposit): Model Name = Placer Au (Cox and Singer, 1986; model 39a)

Comment (Production): Production Notes = Total production through 1916 was worth about $5,000, or less than 250 ounces (Maddren, 1918, p. 380-383; Cobb, 1976 [OFR 76-662, p. 119]).

Comment (Workings): Workings / Exploration = Prospecting began in 1905 or earlier, and mining was reported in 1910 (Capps, 1912, p. 44,47). Maddren (1918) reported that there was no mining in 1916. Mining occured from 3 to 4 miles above the mouth, where a bench 50 feet above the creek was mined (Maddren, 1918). In 1925, one man ground sluiced on Rex Creek (Wimmler, 1925 [ATDM MR 195-8, p. 43]). Prospect drilling was reported in 1939 (Smith, 1941, p. 51).

Comment (Reference): Primary Reference = Maddren, 1918

Comment (Geology): Geologic Description = Bedrock in the upper drainage is quartz-orthoclase-sericite schist and augen gneiss of the Totatlanika Schist; in the lower reaches, the creek is underlain by the Tertiary sandstone and conglomerate of the Healy Creek Formation (Wahrhaftig, 1970 [GQ-810]). The ground that was mined was 6 to 8 feet deep; the gold was close to or in the top foot of decayed schist bedrock (Capps, 1912, p. 47). Gold occurs in both stream and bench placers (Capps, 1912, p. 47). A bench about 50 feet above the stream was mined in 1910 (Maddren, 1918). The gold was 800 fine (Glover, 1950).

References

Reference (Deposit): Smith, P.S., 1941, Mineral industry of Alaska in 1939: U.S. Geological Survey Bulletin 926-A, p. 1-106.

Reference (Deposit): Capps, S.R., 1912, The Bonnifield region, Alaska: U.S. Geological Survey Bulletin 501, 64 p., 1 sheet, scale 1:250,000.

Reference (Deposit): Berg, H.C., and Cobb, E.H., 1967, Metalliferous Lode Deposits of Alaska. U.S. Geological Survey Bulletin 1246, 254 p.

Reference (Deposit): Joesting, H.R., 1942, Strategic mineral occurences in interior Alaska: Alaska Territorial Department of Mines Pamphlet 1, 46 p.

Reference (Deposit): Glover, A.E., 1950, Placer gold fineness: Alaska Territorial Department of Mines Miscellaneous Report 195-1, 38 p.

Reference (Deposit): Smith, P.S., 1939, Mineral industry of Alaska in 1938: U.S. Geological Survey Bulletin 917-A, p. 1-113.

Reference (Deposit): Wimmler, N.L., 1925, Placer mining in Alaska in 1925: Alaska Territorial Department of Mines Miscellaneous Report 195-8, 118 p.

Reference (Deposit): Maddren, A.G., 1918, Gold placers near the Nenana coal field: U.S. Geological Survey Bulletin 662, p. 363-402.

Reference (Deposit): Cobb, E.H., 1976, Summary of references to mineral occurrences (other than mineral fuels and construction materials) in the Fairbanks quadrangle, Alaska: U.S. Geological Survey Open-File Report 76-662, 174 p.

Reference (Deposit): Wahrhaftig, Clyde, 1970, Geologic map of the Fairbanks A-4 quadrangle, Alaska: U.S. Geological Survey Geologic Quadrangle Map GQ-810, 1 sheet, scale 1:63:360.

Reference (Deposit): Cobb, E.H., 1972, Metallic mineral resources map of the Fairbanks quadrangle, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-410, 1 sheet, scale 1:250,000.

Reference (Deposit): Capps, S.R., 1911, Mineral resources of the Bonnifield region: U.S. Geological Survey Bulletin 480-H, p. 218-235.

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