Mine detail: Heckla

Previously called 'Greenpoint'

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Location

Lat / long: 56.01171, -130.33064

Resource(M)

Primary: Lead, Molybdenum, Copper, Silver, Zinc
Ore: Anglesite, Chalcopyrite, Covellite, Digenite, Galena, Malachite, Molybdenite, Pyrite, Pyrrhotite, Sphalerite
Gangue: Quartz

Production

Operation type: Unknown
Development status: Prospect

Geology

Host rock:Hazelton Group
Host type:Metasedimentary Rock
Associated rock:Hyder
Associated type:Quartz Monzonite
Alteration processes:Wallrocks adjacent to veins are impregnated with sulfide minerals. Local iron staining. Local oxidation and formation of secondary copper and lead minerals.

References

MRDSA010220
DEP10000184
Reference{Deposit:: Buddington, A.F., 1929, Geology of Hyder and vicinity, southeastern Alaska, with a reconnaissance of Chickamin River: U.S. Geological Survey Bulletin 807, 124 p.}{Deposit:: Berg, H.C., Elliott, R.L., Smith, J.G., Pittman, T.L., and Kimball, A. L., 1977, Mineral resources of the Granite Fiords wilderness study area, Alaska, with a section on aeromagnetic data by Andrew Griscom: U.S. Geological Survey Bulletin 1403, 151 p.}{Deposit:: Smith, J.G., 1977, Geology of the Ketchikan D-1 and Bradfield Canal A-1 quadrangles, Alaska: U.S. Geological Survey Bulletin 1425, 49 p.}{Deposit:: Elliott, R.L., and Koch, R.D., 1981, Mines, prospects, and selected metalliferous mineral occurrences in the Bradfield Canal quadrangle, Alaska: U.S. Geological Survey Open-File Report 81-728-B, 23 p., 1 sheet, scales 1:250,000 and 1:63,360.}{Deposit:: Maas, K.M., Bittenbender, P E., and Still, J.C., 1995, Mineral investigations in the Ketchikan mining district, southeastern Alaska: U.S. Bureau of Mines Open-File Report 11-95, 606 p.}{Deposit:: Koch, R.D., 1996, Reconnaissance geologic map of the Bradfield Canal quadrangle, southeastern Alaska: U.S. Geological Survey Open-File Report 81-728-A, 35 p., 1 sheet, scale 1:250,000.}
ReporterH. C. Berg