Alaska Dano; War Horse Mine, Admiralty Mining District, Hoonah-Angoon Census Area, Alaska, USAi

Regional Level Types
Alaska Dano; War Horse Mine	Mine
Admiralty Mining District	Mining District
Hoonah-Angoon Census Area	Census Area
Alaska	State
USA	Country

Location: The Alaska Dano Mine is at an elevation of approximately 500 feet on Mansfield Peninsula, 1.2 miles southeast of Funter Bay, 2 miles northwest of Snowy Mountain, and 1 mile southwest of Mount Robert Barron. It is 0.2 mile north of the center of section 24, T. 42 S., R. 64 E. of the Copper River Meridian. The location is accurate. The Alaska Dano Mine and the Nowell-Patterson prospect (JU236) are in the same block of patented mining claims.
Geology: This deposit was discovered in 1897 (Wells and others, 1986). It consists of multiple quartz veins that both conform to and crosscut mica schist and chlorite schist (Cobb, 1978 [OFR 78-374]). There is a small exposure of granitic rock near the mine. The deposit can be traced southeast along strike to the Nowell-Otterson prospects (JU236). Most of the veins are 0.5 to 2 feet thick; a few are up to 20 feet thick. They consist of quartz and calcite that contain pyrite, pyrrhotite, galena, chalcopyrite, native gold, sphalerite, specular hematite, and secondary copper and iron minerals. Pyrite-rich quartz lenses also occur in the slate. Mine workings include more than 400 feet of tunnels and drifts, 2 shafts, and surface cuts. The mine has documented production of less than 100 ounces of gold, but part of the 15,000-ounce gold production of the Alaska-Admiralty Mine (JU224) probably was from the Alaska Dano Mine (Cobb, 1978 [OFR 78-374]). The rocks in the general area are mainly Ordovician and Devonian to Triassic, clastic units, mafic-intermediate volcanic rocks, and subordinate limestone. The bedded rocks are intruded and locally metamorphosed by Cretaceous granodiorite (Gehrels and Berg, 1994).
Workings: This deposit was discovered in 1897 (Wells and others, 1986). Mine workings include more than 400 feet of tunnels and drifts, 2 shafts, and surface cuts.
Alteration: Local oxidation of copper and iron minerals.
Production: The mine has documented production of less than 100 ounces of gold, but part of the 15,000-ounce gold production of the Alaska-Admiralty Mine (JU224) probably came from the Alaska Dano Mine (Cobb, 1978 [OFR 78-374]).

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

Other Databases

Link to USGS - Alaska:	JU235

Other Regions, Features and Areas containing this locality

References