Howard Bay; Copper King Mine, Haines, Alaska, USAi

Regional Level Types
Howard Bay; Copper King Mine	Mine
Haines	City Borough
Alaska	State
USA	Country

Location: This mine is at an elevation of approximately 300 feet, on the east side of inner Howard Bay, approximately 1 mile north-northwest of Point Howard. It is in the SW1/4SW1/4 section 14, T. 41 S., R. 63 E. of the Copper River Meridian. The location is accurate within 1/4 mile.
Geology: The rocks in the area are mainly Silurian limestone, argillite, mudstone, and turbidite that have been folded into an asymmetrical, north-plunging anticline (Clough and Redman, 1989). The deposit was discovered in 1917, and consists of a sulfide-bearing, brecciated, quartz-ankerite-calcite vein that cuts northeast-trending limestone and argillite. The vein strikes just east of north, and dips 76 S; it is nearly parallel to the axial plane of the anticline, varies in thickness from 2.5 to 4.5 feet, and is truncated to the south by a mafic dike. The sulfide minerals include galena, chalcopyrite, pyrite, and sphalerite. The mine has a 20-foot shaft and several open cuts. Seven tons of ore were shipped to a smelter in Tacoma, Washington prior to 1921(Clough and Redman, 1989). The ore shipment assayed 44 ounces of silver per ton, 0.07 ounce of gold per ton, 3.55 percent copper, and a trace of zinc. U.S. Bureau of Mines samples from the mine area assayed more than 1 ounce of silver per ton, 0.9 percent zinc, and 0.47 percent copper (Clough and Redman, 1989).
Workings: The deposit was discovered in 1917. The mine has a 20-foot shaft and several open cuts.
Production: Seven tons of ore were shipped to a smelter in Tacoma, Washington prior to 1921. The ore shipment assayed 44 ounces of silver per ton, 0.07 ounce of gold per ton, 3.55 percent copper, and a trace of zinc.

Commodities (Major) - Ag, Au, Cu, Pb, Zn
Development Status: Yes; small

Other Databases

Link to USGS - Alaska:	JU134

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References