Unnamed

The Unnamed 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: Unnamed

Commodity

Primary: Gold

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: Occurrence
Operation Type: Unknown
Years of Production:
Organization:
Significant:

Physiography

Not available

Mineral Deposit Model

Model Name: Epithermal vein, generic

Orebody

Not available

Structure

Not available

Alterations

Alteration Type: L
Alteration Text: Propylitic alteration is developed in the diorite as evidenced by the presence of chlorite and epidote. Hydrothermal feldspar and clay is mentioned as present within the color anomaly but not otherwise described.

Rocks

Name: Volcanic Breccia (Agglomerate)
Role: Host
Age Type: Host Rock
Age Young: Pliocene

Name: Volcanic Breccia (Agglomerate)
Role: Host
Age Type: Associated Rock
Age Young: Pliocene

Analytical Data

Not available

Materials

Ore: Pyrite
Gangue: Tourmaline

Comments

Comment (Workings): Workings / Exploration = Brief reconnaissance geologic mapping and a few silt samples collected by Christie (1974). Two of eight samples had 0.02 ppm gold; it does not appear occurrence is adequately examined for epithermal gold vein potential.

Comment (Reference): Primary Reference = Christie, 1974

Comment (Geology): Geologic Description = Christie (1974) briefly examined an oval color anomaly (gossan) 8,000 by 6,000 ft (2.4 by 1.8 km) in size developed within volcanic and plutonic rocks. Pyrite is disseminated within discrete 50 to 200 ft (15 to 60 m) wide zones in bleached volcanic rocks at the outer margin of the gossan. Pyrite may be more pervasive in rocks underlying the drift covered valley floor, an area covering 1.2 by 0.9 km. A diorite pluton intrudes the volcanic rocks and the sulfide zone is localized within and adjacent to pluton. Minor amounts of sulfides are localized in fractures and quartz veins fill some fractures in a stockwork. Minor breccia is found in float and is characterized by tourmaline rosettes developed in proximity to pyrite grains.

Comment (Deposit): Model Name = Epithermal gold vein

Comment (Deposit): Other Comments = Quartz veining is briefly mentioned which supports the potential for epithermal gold veins.

Comment (Exploration): Status = Inactive

Comment (Geology): Age = Miocene or younger

References

Reference (Deposit): MacKevett, E.M., Jr., and Holloway, C.D., 1977, Map showing metalliferous mineral deposits in the western part of southern Alaska: U.S. Geological Survey Open-File Report 77-169-F, 38 p., 1 sheet, scale 1:1,000,000.

Reference (Deposit): Christie, J.S., 1974, Aleut-Quintana-Duval 1974 joint venture, final report: Unpublished Quintana Minerals Corporation report, 24 p., 3 appendices, 2 maps. (Report held by the Aleut Corporation, Anchorage, Alaska.)

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