Alaska Rand (ARDF #JU240) Ag, Au

Alaska Rand

Prospect, Inactive

Commodities and mineralogy

Main commodities	Ag; Au
Other commodities	As
Ore minerals	arsenopyrite; pyrite
Gangue minerals	calcite; quartz

Geographic location

Quadrangle map, 1:250,000-scale	JU
Quadrangle map, 1:63,360-scale	A-3
Latitude	58.1785
Longitude	-134.758
Nearby scientific data	Find additional scientific data near this location
Location and accuracy	The Alaska Rand prospect is at an elevation of approximately 100 feet on an unnamed, south-flowing creek that empties into the west head of Hawk Inlet. It is 2.5 miles east-southeast of Snowy Mountain and 2 miles west of Young Bay, in the SW1/4SE1/4 section 34, T. 42 S., R. 65 E. of the Copper River Meridian. The location is accurate within 1/4 mile.

Geologic setting

Geologic description The Alaska Rand prospect is in folded and altered, phyllite and greenschist that generally strike N. 25 W. and dip 60 W (Roehm, 1937). The deposit consists of quartz lenses in the schist (Roehm, 1937). Three quartz lenses, 1- to 6-feet- thick can be traced for up to 90 feet. The quartz is white and clear in alternating bands, and contains sparse pyrite and arsenopyrite, with some calcite (Wells and others, 1986). Gold was discovered at this prospect in 1922 (Roehm, 1937). Trenches and a 25-foot crosscut were started in 1923 and a 400-foot road was built to the beach. Channel samples contain up to 2 ounces of gold per ton (Roehm, 1937). 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).
Geologic map unit	(-134.759786589777, 58.1781646838963)

Geologic description

The Alaska Rand prospect is in folded and altered, phyllite and greenschist that generally strike N. 25 W. and dip 60 W (Roehm, 1937). The deposit consists of quartz lenses in the schist (Roehm, 1937). Three quartz lenses, 1- to 6-feet- thick can be traced for up to 90 feet. The quartz is white and clear in alternating bands, and contains sparse pyrite and arsenopyrite, with some calcite (Wells and others, 1986). Gold was discovered at this prospect in 1922 (Roehm, 1937). Trenches and a 25-foot crosscut were started in 1923 and a 400-foot road was built to the beach. Channel samples contain up to 2 ounces of gold per ton (Roehm, 1937).

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).

Geologic map unit

(-134.759786589777, 58.1781646838963)

Production and reserves

Workings or exploration	Gold was discovered at this prospect in 1922 (Roehm, 1937). Trenches and a 25-foot crosscut were started in 1923 and a 400-foot road was built to the beach.
Indication of production	None

References

MRDS Number	A012088
References Gehrels, G.E., and Berg, H.C., 1994, Geology of southeastern Alaska, in Plafker, George, and Berg, H. C., eds., The geology of Alaska: Geological Society of America, DNAG, The geology of North America, Vol. G-1, p. 451-467. Roehm, J.C., 1937, Preliminary report on Alaska Rand Group, Hawk Inlet, Admiralty Island, Alaska: Alaska Territorial Department of Mines Property Examination PE 112-12, 2 p. Wells, D.E., Pittman, T.L., Brew, D.A. and Douglass, S.L., 1986, Map and description of the mineral deposits in the Juneau, Taku River, Atlin, and part of the Skagway quadrangles, Alaska: U.S. Geological Survey Open-File Report 85-717, 332 p., 1 sheet, scale 1:250,000.
Reporters	J.C. Barnett and L.D. Miller (Juneau, Alaska )
Last report date	12/15/2001