Quartz Creek (ARDF #CA023) Au

Quartz Creek

Mine, Inactive

Alternative names

Jack

Commodities and mineralogy

Main commodities	Au
Other commodities	Ag; Pb; Pt; W; Zn
Ore minerals	gold; platinum

Geographic location

Quadrangle map, 1:250,000-scale	CA
Quadrangle map, 1:63,360-scale	C-5
Latitude	65.51
Longitude	-161.33
Nearby scientific data	Find additional scientific data near this location
Location and accuracy	The Jack placer mine is at an elevation of about 850 feet on a west-flowing tributary to the south fork of Quartz Creek. The map site is in section 11, T. 1 N., R. 13 W., of the Kateel River Meridian, and the coordinates are for the approximate midpoint of the placer ground. Cobb, 1972 (MF-389), location 32.

Geologic setting

Geologic description Quartz Creek heads in syenite of the Late Cretaceous, Granite Mountain pluton. Bedrock at the Jack placer mine is syenite and Jurassic-Cretaceous andesite. Fragments of narrow quartz veins and pegmatites occur in the placer. Placer gold is concentrated in the stream for approximately 1 mile. Some platinum has been recovered with the gold. Heavy minerals collected from stream gravels over syenite bedrock contained sphene, melanite, magnetite, hornblende, zircon, thorite and uranothorite. Samples collected over andesite bedrock contained hornblende, magnetite, ilmenite, spinel, and hematite (Gault and others, 1953).
Geologic map unit	(-161.332645084061, 65.5093279624569)
Mineral deposit model	Placer Au-PGE (Cox and Singer, 1986; model 39a).
Mineral deposit model number	39a
Age of mineralization	Quaternary.

Production and reserves

Indication of production	Yes; small
Additional comments Stream gradient approximately 100 feet per mile.

References

MRDS Number	A015718; M045362
References Anderson, Eskil, 1947, Mineral occurrences other than gold deposits in northwestern Alaska: Alaska Territorial Division of Mines Pamphlet 5-R, 48 p. Cass, J.T., 1959, Reconnaissance geologic map of the Candle quadrangle, Alaska: U.S. Geological Survey Miscellaneous Investigations Series Map I-287, 1 sheet, scale 1:250,000. Cobb, E.H., 1972, Metallic mineral resources map of the Candle Quadrangle, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-389, 1 sheet, scale 1:250,000. Cobb, E.H., 1973, Placer deposits of Alaska: U.S. Geological Survey Bulletin 1374, 213 p. Cobb, E.H., 1976, Summary of references to mineral occurrences (other than mineral fuels and construction materials) in the Candle, Holy Cross, Norton Bay, Nulato, and Unalakleet quadrangles, Alaska: U.S. Geological Survey Open-File Report 76-866, 102 p. Gault, H.R., Killeen, P.L., West, W.S., and others, 1953, Reconnaissance for radioactive deposits in the northeastern part of the Seward Peninsula, Alaska, 1945-47 and 1951: U.S. Geological Survey Circular 250, 31 p. Miller, T.P., and Elliott, R.L., 1969, Metalliferous deposits near Granite Mountain, eastern Seward Peninsula, Alaska: U.S. Geological Survey Circular 614, 19 p. Smith, P.S., 1930, Mineral industry of Alaska in 1927 and Administrative Report: U.S. Geological Survey Bulletin 810-A, p. 1-64. Smith, P.S., 1930, Mineral Industry of Alaska in 1928: U.S. Geological Survey Bulletin 813-A, p. 1-72. Smith, P.S., 1932, Mineral industry of Alaska in 1929, in Smith, P.S., and others Mineral resources of Alaska, report on progress of investigations in 1929: U.S. Geological Survey Bulletin 824-A, p. 1-81. Smith, P.S., 1933, Mineral Industry of Alaska in 1930: U.S. Geological Survey Bulletin 836-A, p. 1-83. Smith, P.S., 1933, Mineral Industry of Alaska in 1931: U.S. Geological Survey Bulletin 844-A, p. 1-82. Smith, P.S., 1934, Mineral Industry of Alaska in 1932: U.S. Geological Survey Bulletin 857-A, p. 1-91. Smith, P.S., 1934, Mineral Industry of Alaska in 1933: U.S. Geological Survey Bulletin 864-A, p. 1-94. Smith, P.S., 1936, Mineral Industry of Alaska in 1934: U.S. Geological Survey Bulletin 868 A, p. 1-91. Smith, P.S., 1937, Mineral Industry of Alaska in 1935: U.S. Geological Survey Bulletin 880 A, p. 1-95. Smith, P.S., 1938, Mineral Industry of Alaska in 1936: U.S. Geological Survey Bulletin 897 A, p. 1-107. Smith, P.S., 1939, Mineral Industry of Alaska in 1937: U.S. Geological Survey Bulletin 910 A, p. 1-113. Smith, P.S., 1939, Mineral industry of Alaska in 1938: U.S. Geological Survey Bulletin 917-A, p. 1-113. Smith, P.S., 1941, Mineral Industry of Alaska in 1939: U.S. Geological Survey Bulletin 926 A, p. 1-106. Smith, P.S., 1942, Mineral industry of Alaska in 1940: U.S. Geological Survey Bulletin 933-A, p. 1-102.
Reporters	Anita Williams (Anchorage, AK)
Last report date	1/12/2000