Keno Prospect, Hyder Mining District, Prince of Wales-Hyder Census Area, Alaska, USAi

Regional Level Types
Keno Prospect	Prospect
Hyder Mining District	Mining District
Prince of Wales-Hyder Census Area	Census Area
Alaska	State
USA	Country

Location: The Keno prospect is in Section 27 at an elevation of about 4000 feet on an east-facing mountainside above Ferguson Glacier (Elliott and Koch, p. 13, loc. 39). The location is probably accurate within about a quarter of a mile.
Geology: The country rocks in the area of the Keno prospect are pelitic metasedimentary and subordinate andesitic metavolcanic strata of the Jurassic or older Mesozoic Hazelton, Group, which are underlain and locally intruded by the Triassic Texas Creek Granodiorite (Smith, 1977; Koch, 1996). In 1925, Buddington (p. 94) described the deposit as quartz fissure veins 2-4 feet thick that cut granodiorite and contain galena and other sulfides. A specimen, presumably of the best ore, contained 0.6 oz Au and 3 oz Ag per ton, and 48% Pb. In 1929, Buddington (p. 108) reported an adit driven along a quartz vein up to 4.5 feet thick in Texas Creek Granodiorite. The vein had been traced on the surface for about 400 feet, and contained oreshoots of solid sulfides as much as 7 inches thick comprising galena, pyrite, chalcopyrite, sphalerite, and tetrahedrite. The quartz also carries disseminated pyrite and, locally, some barite.
Workings: Early workings included a 50-foot adit. An early assay, presumably of the best ore, showed 0.6 oz Au and 3 oz Ag per ton, and 48% Pb.

Commodities (Major) - Ag, Au, Cu, Pb, Zn; (Minor) - Barite
Development Status: None
Deposit Model: Polymetallic veins

Other Databases

Link to USGS - Alaska:	BC039

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References