Unnamed (southeast of upper Berg Creek)

Occurrence, Inactive

Commodities and mineralogy

Main commodities Cu
Ore minerals chalcopyrite; pyrite

Geographic location

Quadrangle map, 1:250,000-scale JU
Quadrangle map, 1:63,360-scale D-5
Latitude 58.9325
Longitude -135.6546
Nearby scientific data Find additional scientific data near this location
Location and accuracy This occurrence is at an elevation of about 2,500 feet, 2.5 miles southeast of Berg Mountain on the east side of the Berg Creek drainage. It is in the SE1/4 section 12, T. 34 S, R. 58 E. of the Copper River Meridian. This is location J016 of Wells and others (1986). The location is accurate within 1/2 mile.

Geologic setting

Geologic description

The rocks in the vicinity of this occurrence are predominantly Silurian and Devonian greenstones and other metavolcanic rocks (Brew and Ford, 1985). Cobb (1978 [OFR 78-374]) reports that a boulder containing pyrite and chalcopyrite was found in glacial moraine at this location.
The rocks in the vicinity of this occurrence are deformed and metamorphosed Silurian or Devonian carbonate, clastic and volcanic clastic units that have been intruded by Upper Jurassic and Lower Cretaceous granitic and dioritic rocks (Brew and others, 1992).
Geologic map unit (-135.656460479045, 58.9321481619551)

Production and reserves

Indication of production None



Reporters J.C. Barnett and L.D. Miller (Juneau, Alaska )
Last report date 12/15/2001