Tok Antimony; Stibnite; A Lucky Leak; Gamblin; Caulk Mine, Tok Mining District, Southeast Fairbanks Census Area, Alaska, USAi

Regional Level Types
Tok Antimony; Stibnite; A Lucky Leak; Gamblin; Caulk Mine	Mine
Tok Mining District	Mining District
Southeast Fairbanks Census Area	Census Area
Alaska	State
USA	Country

Location: The deposit is located nearly at the foot of Stibnite Creek (formerly called Boulder Creek), in the SW 1/4 section 13, T. 17 N., R. 8 E., of the Copper River Meridian (Ebbley and Wright, 1948, p. 30). It is location 22 of Singer and others (1976).
Geology: The Tok Antimony deposit, also called Boulder Creek, Stibnite, A Lucky Leak, and Stibnite Creek was discovered in the early 1900's. The mineralization at the prospect consists of a six-meter-wide fault zone that contains four types of stibnite ore: (1) coarse-grained, acicular stibnite in crystals up to 50 millimeters long associated with quartz, (2) fine-grained massive stibnite with interstitial quartz and minor pyrite, (3) mineralized breccia consisting of quartz and schist fragments in a matrix of quartz, calcite, muscovite, stibnite and pyrite, and (4) quartz-pyrite-stibnite stringers. The high-grade ore is concentrated along two well-defined fault planes as two distinct veins about 0.6 meter wide, separated by 1 to 2 meters of fractured and altered chlorite schist. Isolated pods of stibnite and pyrite-bearing quartz stringers less than 1 to 2 centimeters wide occur along minor faults within 30 meters of veins (Ebbley and Wright, 1948). In 1940, several tons of ore from the prospect were stockpiled by Boulder Creek awaiting transport. All of it was washed away by the river and was never processed (Ebbley and Wright, 1948).
Workings: A 12-foot adit was driven in 1914. In 1940, several tons of material were stockpiled and mined, but were washed away by the river before it could be transported from the deposit (Ebbley and Wright, 1948, p. 31).
Production: Several tons of high grade ore were stockpiled at the site in 1940, but were washed away by the river before it could be transported (Ebbley and Wright, 1948). There was some mining from an open cut with a bulldozer in 1976 (York, 1980).

Commodities (Major) - Sb
Development Status: Yes; small
Deposit Model: Stibnite vein (Cox and Singer, 1986; model 27d)

Other Databases

Link to USGS - Alaska:	TC029

Other Regions, Features and Areas containing this locality

References