Banner Creek

Mines, Inactive

Commodities and mineralogy

Main commodities Au
Other commodities Ag; Cu; Pb; REE; Sb; Sn; W
Ore minerals arsenopyrite; cassiterite; chalcopyrite; galena; gold; monazite; pyrite; scheelite; stibnite

Geographic location

Quadrangle map, 1:250,000-scale BD
Quadrangle map, 1:63,360-scale B-5
Latitude 64.316
Longitude -146.346
Nearby scientific data Find additional scientific data near this location
Location and accuracy Banner Creek drains southward into the Tanana River. The approximate center of mining activity on Banner Creek is in SW1/4SW1/4 section 10, T. 7 S., R. 7 E., of the Fairbanks Meridian, approximately 2 miles north of the town of Richardson on the Richardson Highway. The creek is approximately 6 miles long and has several tributaries with associated placers. These include Buckeye Creek (BD005), Democrat Pup Creek (BD013), and Susie Creek (not identified on existing maps). Placer workings are found from just above the confluence of Democrat Pup Creek to the Tanana River (Olson and others, 1985). Numerous unimproved roads provide access to the Banner Creek drainage. It is locality 13 of Cobb and Eberlein (1980), who summarized relevant references under the name 'Banner Creek'.

Geologic setting

Geologic description

The Richardson area is characterized by gentle slopes and broad alluvium filled valleys (Prindle and Katz, 1913, p. 140). The area is unglaciated and largely overlain by windblown silt, sand, and loess, locally up to 50 meters thick (Foster and others, 1979). The bedrock in the region comprises greenschist to amphibolite facies schist, marble, and gneiss that have been intruded by various igneous bodies (Bundtzen and Reger, 1977, p. 29). The schist and marble are probably Paleozoic, and the gneiss has a probable protolith of Precambrian and Paleozoic sedimentary and igneous rocks (Weber and others, 1978). The intrusive bodies in the area range in composition from rhyolite to andesite. Fine-grained rhyolite containing quartz and feldspar phenocrysts is common throughout the area (Olson and others, 1985). At the nearby Democrat Lode (BD014), the rhyolite contains arsenopyrite, gold, and pyrite, and is albitic, clay, and sericite altered (R.J. Newberry, oral communication, 1998). Structurally, the Richardson region is cut by a northwest-trending fracture system termed the Richardson Lineament. The lineament appears to correspond with the distribution of the rhyolite and other intrusive bodies and placer gold deposits (Bundtzen and Reger, 1977, p. 29). Also, the lineament tends to separate gneissic rocks to the northeast from schistose rocks to the southwest (Swainbank and others, 1984).
The placer gold fineness mined from Banner Creek ranged from 639.5 to 785 (Menzie and Foster, 1979). Metz and Hawkins (1981) reported the average gold fineness to be 737. Glover (1950) reported a range in gold fineness of 738 to 798 for Banner Creek. Placer and churn-drill hole concentrates contain actinolite, arsenopyrite, biotite, cassiterite, chalcopyrite, dolomite, epidote, feldspar, fluorapatite, galena, garnet, gold, hornblende, ilmenite, magnetite, monazite, muscovite, quartz, pyrite, pyroxene, rutile, scheelite, sphene, stibnite, tourmaline, and zircon (Bundtzen and Reger, 1977). Mining along Banner Creek has included open-cut and drifting methods (Ellsworth and Parker, 1911). In the Banner Creek drainage, schist and gneiss in contact with the rhyolite dikes is hydrothermally altered (Swainbank and others, 1984).
Placer gold was first discovered in the Richardson district in 1905. Mining initially occurred on the nearby Tenderfoot Creek (BD039) and expanded to Banner Creek and associated tributaries soon after. Following peak gold production in 1908, mining in the area declined (Olson and others, 1985). From 1905 through 1921, gold production for the Richardson district was approximately 95,000 ounces of gold and 24,000 ounces of silver (Bundtzen and Reger, 1977). Since 1980, mining in the district has produced an additional 10,000 ounces of gold (Olson and others, 1985). Gold production for individual mines and sections of Banner Creek and its tributaries has not been reported separately.
Geologic map unit (-146.348356240254, 64.3155918168004)
Mineral deposit model Placer Au (Cox and Singer, 1986; model 39a)
Mineral deposit model number 39a
Age of mineralization Quaternary.

Production and reserves

Workings or exploration Placer gold was first discovered in the Richardson area in 1905. Mining initially occurred on the nearby Tenderfoot Creek (BD039) and expanded to Banner Creek and associated tributaries soon after. Following peak gold production in 1908, mining in the area declined (Olson and others, 1985). Mining along Banner Creek has included open-cut and drifting methods (Ellsworth and Parker, 1911). Bundtzen and Reger (1977) reported 4 churn-drill holes along the creek. Currently (1998), exploration work is being conducted along the Banner Creek drainage (F.L. Blystone, written communication, 1998).
Indication of production Yes; small
Production notes From 1905 through 1921, gold production for the Richardson area was approximately 95,000 ounces of gold and 24,000 ounces of silver (Bundtzen and Reger, 1977). Since 1980, mining in the district has produced an additional 10,000 ounces of gold (Olson and others, 1985). Gold production for individual mines and sections of Banner Creek and its tributaries has not been reported separately.

References