Mills & Trimble

The Mills & Trimble is a silver and 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: Mills & Trimble

Commodity

Primary: Silver
Primary: Gold
Secondary: Copper
Secondary: Nickel

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: Alteration or oxidation of dike rock related to a possible shear zone.

Rocks

Role: Host
Age Type: Host Rock
Age Young: Cretaceous

Analytical Data

Not available

Materials

Ore: Arsenopyrite
Ore: Chalcopyrite
Ore: Gold
Ore: Pyrite
Gangue: Calcite
Gangue: Quartz

Comments

Comment (Geology): Age = Host rock is Cretaceous.

Comment (Geology): Age = Younger than Cretaceous host rocks.

Comment (Exploration): Status = Inactive

Comment (Reference): Primary Reference = Martin and others, 1915

Comment (Workings): Workings / Exploration = Several small adits were driven in the early 1900's. No assay results are reported (Martin and others, 1915).

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

Comment (Geology): Geologic Description = The bedrock around Mt. Mills is Cretaceous Valdez Group metasediments and greenstone that is cut by felsic dikes of probable Tertiary age (Cobb, 1979, OFR 80-87). The prospect consists of a zone 30 to 50 feet wide, composed of reddish, decaying dike rock which contains some thin quartz veins; it has been fractured by post-veining movement. The zone has a general north-south trend and dips 60 to 70W. The quartz veins are less than a foot wide and contain arsenopyrite, pyrite, and chalcopyrite. Several small adits have been made in this zone but no assay results are reported (Martin and others, 1915).

References

Reference (Deposit): Berg, H.C., and Cobb, E.H., 1967, Metalliferous Lode Deposits of Alaska. U.S. Geological Survey Bulletin 1246, 254 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): 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): Grant, U.S., and Higgins, D.F., Jr., 1910, Preliminary report on the mineral resources of the southern part of Kenai Peninsula: U.S. Geological Survey Bulletin 442-D, p. 166-178.

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): Martin G.C., Johnson, B.L., and Grant, U.S., 1915, Geology and mineral resources of Kenai Peninsula, Alaska: U.S. Geological Survey Bulletin 587, 243 p.

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