Hillside Quartz

Prospect, Inactive

Alternative names

Hillside
Frenchy Creek mine

Commodities and mineralogy

Main commodities Au
Other commodities Ag; Zn
Ore minerals arsenopyrite; gold; pyrite
Gangue minerals quartz

Geographic location

Quadrangle map, 1:250,000-scale SR
Quadrangle map, 1:63,360-scale D-7
Latitude 60.7529
Longitude -149.4977
Nearby scientific data Find additional scientific data near this location
Location and accuracy The prospect is located in the SW1/4 section 29, T. 8 N., R. 1 W., of the Seward Meridian, at an elevation of 3,100 feet. It is situated about 4,000 feet north of Frenchy Creek. This is location 29 of Tysdal (1978 [MF-880-A]) and location S-276 of Jansons and others (1984). This location is accurate to within a quarter of a mile.

Geologic setting

Geologic description

Nelson and others (1985) have mapped the bedrock in this area as undifferentiated sedimentary rocks of the Valdez Group of Late Cretaceous age. The deposit consists of several quartz veins of undetermined thickness; these strike N70W and dip steeply south. The vein contains arsenopyrite, pyrite, sphalerite, and gold (Tysdal, 1978 [MF-880-A]).
The U.S. Bureau of Mines sampled this prospect in 1979; they collected one grab sample that assayed a trace of gold and 0.02 ounce of silver per ton (Jansons and others, 1984).
Geologic map unit (-149.499848081592, 60.7523171905233)
Mineral deposit model Low-sulfide Au-quartz veins (Cox and Singer, 1986; model 36a)
Mineral deposit model number 36a
Age of mineralization Cretaceous or younger; the veins cut rocks of the Valdez Group of Late Cretaceous age.

Production and reserves

Workings or exploration Workings consist of several prospect pits, and improvements consist of a trail. The U.S. Bureau of Mines sampled the prospect in 1979. They collected a grab sample that assayed a trace of gold and 0.02 ounce of silver per ton (Jansons and others, 1984).
Indication of production None

References