Peter Sather

The Peter Sather is a gold 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: Peter Sather
Secondary: Rolphs
Secondary: Alan Blairs

Commodity

Primary: Gold
Secondary: Silver
Secondary: Copper
Secondary: Lead

Location

State: Alaska
District: Homer

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

Model Name: Low-sulfide Au-quartz vein

Orebody

Not available

Structure

Not available

Alterations

Alteration Type: L
Alteration Text: Calcite rims are found on slate fragments within the vein.

Rocks

Name: Mafic Intrusive Rock
Role: Associated
Age Type: Host Rock Unit
Age Young: Paleocene

Name: Mafic Intrusive Rock
Role: Associated
Age Type: Host Rock
Age Young: Paleocene

Name: Mafic Intrusive Rock
Role: Associated
Age Type: Associated Rock
Age Young: Pliocene

Analytical Data

Not available

Materials

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

Comments

Comment (Geology): Age = Tertiary; Boden and others (1991) report other veins in the district are about 55 m.y. old.

Comment (Workings): Workings / Exploration = Some surface excavations and 87 feet of adit were driven in the 1930's. Chip samples in the No. 1 vein assayed 0.8 ounces of gold and 1.40 ounces of silver per ton (Pilgrim, 1933). Chip/channel samples taken at the surface of the Rolph No. 1 vein along strike 0.25 ounces of gold per ton (MacKevett and Holloway, 1977).

Comment (Reference): Primary Reference = Pilgrim, 1933

Comment (Exploration): Status = Inactive

Comment (Deposit): Model Name = Low-sulfide, Au-quartz vein (Cox and Singer, 1986; model 36a)

Comment (Geology): Geologic Description = The Rolph No. 1 vein intrudes the black slate of the Cretaceous Valdez Group (Richter, 1970). The No.1 vein strikes S57E and dips 85E. On the surface, the vein ranges from a few inches to 42 inches thick and contains white crystalline quartz with pyrite, chacopyrite, sphalerite, and galena. Surface samples of the vein contained 0.80 ounces of gold and 1.40 ounces of silver per ton (Pilgrim,1933). In the adit, which is about 87 feet long, the vein is six inches wide and contains some sulfides, but no assay results are reported. ? the western vein is along the margins of a light gray granodiorite dike and the black slates. In hand sample, the dike rock generally contains a few small altered amphibole and plagioclase phenocrysts; it is probably Tertiary in age ( Richter, 1970). A 60 foot adit intersects but does not cross the vein. The vein is at least 30 inches wide in the adit and consists of dull white quartz with considerable slate fragments, but no sulfides. The margins of the slate fragments have calcite rims. A sample from a portion of the vein returned traces of gold and silver (Pilgrim, 1933).

References

Reference (Deposit): Pilgrim, E.R., 1933, Progress of lode mining in interior Alaska, 1932: Alaska Territorial Department of Mines Miscellaneous Report 194, 11 p.

Reference (Deposit): MacKevett, E.M., Jr., and Holloway, C.D., 1977, Map showing metalliferous and selected non-metalliferous mineral deposits in the eastern part of southern Alaska: U.S. Geological Survey Open-File Report 77-169-A, 99 p., 1 sheet, scale 1:1,000,000.

Reference (Deposit): Cobb, E.H., 1979, Summary of references to mineral occurrences (other than minerals fuels and construction materials) in the Seldovia quadrangle, Alaska: U.S. Geological Survey Open-file Report 80-87, 47 p.

Reference (Deposit): Cobb, E.H., 1972, Metallic minerals resources map of the Seldovia quadrangle, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-397, 1 sheet, scale 1:250,000.

Reference (Deposit): Capps, S.R., 1938, Lode mining in the Nuka Bay district, in Smith, P.S., Mineral industry of Alaska in 1936: U.S. Geological Survey Bulletin 897-A, p. 25-32.

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