|Quadrangle map, 1:250,000-scale||CR|
|Quadrangle map, 1:63,360-scale||B-2|
|Nearby scientific data||Find additional scientific data near this location|
|Location and accuracy||The Campbell prospect is about 1.4 mile northwest of Mount Jumbo and about 0.3 mile east-southeast of the center of section 21, T. 76 S., R. 84 E.|
Geologic descriptionThe Campbell prospect is in skarn near the contact of a small Cretaceous granodiorite stock that intrudes marble of the Wales Group of Late Proterozoic and Cambrian age (Herreid and others, 1978). The deposit consists of small, pyrrhotite-rich pods with chalcopyrite in the skarn. One sample contained 1,380 parts per million (ppm) copper, 20 ppm lead, 175 ppm zinc, 1.5 ppm silver, and a trace of gold. The prospect was explored by a 50-foot adit.
|Geologic map unit||(-132.645224126114, 55.2626985973423)|
|Mineral deposit model||Copper skarn (Cox and Singer, 1986; model 18b).|
|Mineral deposit model number||18b|
|Age of mineralization||Probably related to a nearby Cretaceous granodiorite intrusion.|
|Alteration of deposit||Deposit probably is genetically related to the skarn host rock.|
|Workings or exploration||The only working consists of a 50-foot adit.|
|Indication of production||None|
Additional commentsThe Campbell prospect is on or surrounded by lands that have been conveyed to the Sealaska Corporation, who hold the surface and subsurface rights, or the land is under application for transfer to them.
Herreid, Gordon, Bundtzen, T.K., and Turner, D.L., 1978, Geology and geochemistry of the Craig A-2 quadrangle, Prince of Wales Island, southeastern Alaska: Alaska Division of Geological and Geophysical Surveys Geologic Report 48, 49 p.
|Reporters||D.J. Grybeck (Applied Geology)|
|Last report date||5/1/2004|