Unnamed (near Horse Creek)

Occurrence, Inactive

Commodities and mineralogy

Main commodities Cu; Sb
Ore minerals azurite; copper sulfides; malachite

Geographic location

Quadrangle map, 1:250,000-scale CH
Quadrangle map, 1:63,360-scale B-4
Latitude 67.3985
Longitude -148.97
Nearby scientific data Find additional scientific data near this location
Location and accuracy This occurrence is at elevation of about 4,000 feet, a mile south of peak 4792, and about 10 miles southwest of the south end of Chandalar Lake. It is about 0.3 mile north of the center of section 30, T. 30 N., R. 6 W.

Geologic setting

Geologic description

Brosgé and Reiser (1972) described this occurrence as copper sulfides and copper staining in small pods and veinlets in Devonian quartz-mica schist intercalated with greenschist and greenstone. Kurtak and others (2002) examined the area but could not find any copper minerals. They did locate a 30-foot-long area of limonite-stained quartz-mica schist that contained 0.84 percent antimony. A rubblecrop sample of a metamorphosed quartz vein that crosscut that schist contained 549 parts per million antimony. No antimony mineral was identified.
Geologic map unit (-148.972726651898, 67.3980966768621)
Mineral deposit model Data too sparse to determine.
Age of mineralization Devonian or younger based on the age of the host rock.

Production and reserves

Workings or exploration Only limited sampling by the U.S. Geological Survey and Bureau of Land Management.
Indication of production None
Reserve estimates None.
Production notes None.

Additional comments

MAS No. 0020310076