Holeman

Prospect, Inactive

Commodities and mineralogy

Main commodities Au
Ore minerals pyrite
Gangue minerals quartz

Geographic location

Quadrangle map, 1:250,000-scale JU
Quadrangle map, 1:63,360-scale B-2
Latitude 58.2755
Longitude -134.4072
Nearby scientific data Find additional scientific data near this location
Location and accuracy The Holeman prospect is at an elevation of approximately 300 feet on Douglas Island, 1/4 mile west of Douglas on the south side of Bear Creek. It is in the SW1/4NE1/4 section 35, T. 41 S., R. 67 E. of the Copper River Meridian. The location is accurate.

Geologic setting

Geologic description

The Holeman prospect was discovered before 1902 and was subsequently consolidated with the Tyee Prospect (JU193). Diamond drilling took place on the property in 1916, but there are no known workings. The deposit consists of black phyllite that has been intruded by a swarm of diorite sills (Redman and others, 1989). The sills are weakly altered and contain minor disseminated pyrite. Pyrite-bearing quartz veins occur along the margins. No other information is available (Redman and others, 1989; Wells and others, 1986).
The rocks in the general area are Upper Jurassic or Cretaceous marine argillite and graywacke, interbedded with andesite or basalt (Brew and Ford, 1985). The bedded rocks are regionally metamorphosed to prehnite-pumpellyite or greenschist grade, and cut by diorite or gabbro dikes and sills.
Geologic map unit (-134.408969772292, 58.2751715603861)
Alteration of deposit Diorite sills are weakly altered.

Production and reserves

Workings or exploration The deposit at the Holeman prospect was discovered before 1902 and was subsequently consolidated with the Tyee Prospect (JU193). There are no known workings but diamond drilling took place on the property in 1916.
Indication of production None

References