Bee Creek

Porphyry copper prospect in Alaska, United States

Names and other identifiers

GMRAP ID 3423
Alternate names Dry Creek
Tract name Alaska Peninsula and Aleutian Islands (003pCu5006)
Site status prospect

Geographic location

Country United States
State or province Alaska
Geographic location -158.3846, 56.5117
Geologic map unit -158.3846, 56.5117
Nearby data

Geologic information

Deposit type Porphyry copper
Age (Ma) 3.8Ma
Age determination method unknown
Age range 3.8–3.2 Ma
Age reference Wilson (1980)
Minerals chalcopyrite, chrysocolla, galena, gold, magnetite, malachite, molybdenite, pyrite, pyrrhotite, sphalerite
Tectonic setting mixed
Stratigraphic age Pliocene

Commodity and development information

Development status Prospect
Major commodities Ag, Au, Cu, Mo
Minor commodities Pb, Zn
Gold-Moly ratio -9999

Reference information

Comments Sandstone, siltstone, argillite, and conglomerate of the Jurassic-age Naknek Formation have been intruded by a small dacite stock, which is surrounded by a sulfide system and alteration halo covering approximately 2 square miles. The prospect contains an estimated resource of 4.5 to 9 million metric tons grading 0.25 percent copper, 0.01 percent molybdenum, and trace gold. Alteration appears to be the classic porphyry type with a potassic core grading outward through phyllic, argillic, and propylitic alteration zones although these may not all be developed fully. Detailed mapping, sampling and drilling (5 holes totaling 1,865 ft) in 1975–1976. Further exploration in 1979 and 1981. Additional mapping and sampling by the U.S. Geological Survey in 1980 and 1981. Drilling (2 holes totaling 1,000 m) in 2006. The prospect contains an estimated resource of 4.5 to 9 million metric tons grading 0.25 percent copper, 0.01 percent molybdenum, and trace gold.
Study area name United States
References U.S. Geological Survey (2014a); Fields (1977); Wilson (1980)
Site reference U.S. Geological Survey National Mineral Resource Assessment Team (2002)