Ochre

The Ochre is a silver, lead, and zinc mine located in Alaska.

About the MRDS Data:

All mine locations were obtained from the USGS Mineral Resources Data System. The locations and other information in this database have not been verified for accuracy. It should be assumed that all mines are on private property.

Mine Info

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Site Name

Primary: Ochre

Commodity

Primary: Silver
Primary: Lead
Primary: Zinc
Secondary: Mercury
Secondary: Arsenic
Secondary: Gold
Secondary: Antimony

Location

State: Alaska
District: Alaska Peninsula

Land Status

Not available

Holdings

Not available

Workings

Not available

Ownership

Not available

Production

Not available

Deposit

Record Type: Site
Operation Category: Prospect
Operation Type: Unknown
Years of Production:
Organization:
Significant:

Physiography

Not available

Mineral Deposit Model

Not available

Orebody

Not available

Structure

Not available

Alterations

Alteration Type: L
Alteration Text: The host rock is variously argillized, silicified, and pyritized.

Rocks

Not available

Analytical Data

Not available

Materials

Ore: Sphalerite
Ore: Pyrite
Ore: Galena
Ore: Chalcopyrite
Gangue: Quartz

Comments

Comment (Exploration): Status = Inactive

Comment (Deposit): Other Comments = This prospect is located on land patented by, or interim-conveyed to, the Aleut Corporation.

Comment (Deposit): Model Name = Epithermal gold vein

Comment (Geology): Age = Eocene or younger.

Comment (Reference): Primary Reference = Anderson and others, 1980

Comment (Geology): Geologic Description = This prospect consists of northeast-striking silicified breccia zones and northwest-striking quartz veins. Chalcopyrite, galena, and sphalerite occur sporadically in the breccia and the veins. The host rock is silicified and argillized pyritic andesite of the late Eocene to early Oligocene Popof volcanic rocks (Wilson and others, 1995). The main silicified breccia is 5 to 15 feet in width and strikes N 25 to 65 E. Assays show as much as 18 ppm silver, 450 ppm copper, 3,500 ppm lead, 5,400 ppm zinc, 1,080 ppm arsenic, and 118 ppm mercury (Anderson and others, 1980). Float samples of the northwest-striking vein system assayed as much as 0.51 ppm gold, 72 ppm silver, 3,100 ppm lead, 6,100 ppm zinc, 285 ppm arsenic, 108 ppm mercury, and 6,200 ppm antimony. Battle Mountain Exploration Company sampled the site in 1990. None of the samples taken contained significant gold values.

Comment (Workings): Workings / Exploration = In 1980 Resource Associates of Alaska mapped the prospect, collected 504 soil and 152 rock samples, and conducted VLF-EM and magnetometer surveys (Anderson and others, 1980). Float samples of vein quartz contained as much as 0.51 ppm gold and 72 ppm silver and anomalous amounts of copper, lead, zinc, arsenic, mercury, and antimony. Battle Mountain Exploration Company sampled the site in 1990. The samples contained no gold values of note.

References

Reference (Deposit): Ellis, W.T., and Apel, R.A., 1990, Unga/Alaska Peninsula 1990 final report, Battle Mountain Exploration Company report, 49 p., 29 map sheets at various scales. (Report held by the Aleut Corporation, Anchorage, Alaska.)

Reference (Deposit): Anderson, G.L., Butherus, D.L., Fankhauser, R.E., Pray, J.C., Lindberg, P.A., and Hoffman, B.L., 1980, Exploration and evaluation of lands leased from Aleut Native Corporation 1980; Resource Associates of Alaska Report, 84 p, 16 map sheets, various scales. (Report held by the Aleut Corporation, Anchorage, Alaska.)

Reference (Deposit): Wilson, F.H., Detterman, R.L., Miller, J. W., and Case, J.E., 1995, Geologic map of the Port Moller, Stepovak Bay, and Simeonof Island quadrangles, Alaska: U.S. Geological Survey Miscellaneous Investigation Series Map I-2272, 1 map sheet, scale 1:250,000.

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