Volcano Bay

The Volcano Bay is a gold and silver 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: Volcano Bay

Commodity

Primary: Gold
Primary: Silver
Secondary: Zinc

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
Model Name: Polymetallic veins

Orebody

Not available

Structure

Not available

Alterations

Alteration Type: L
Alteration Text: Granodiorite, in general, is moderately propylitically altered, and contains traces of disseminated pyrite. Locally, granodiorite is completely propylitically altered, having up to 4 percent pyrite either disseminated or in fracture fillings. Although andesitic country rocks generally are not altered, they locally contain zones of intense alteration (destruction of feldspars and mafic minerals) up to 200' (60 m) wide containing as much as 5 percent pyrite.

Rocks

Not available

Analytical Data

Not available

Materials

Ore: Pyrite

Comments

Comment (Workings): Workings / Exploration = Brief reconnaissance mapping and 15 soil and silt samples (Christie, 1974). Sample results showed generally low copper and molybdenum, zinc to 109 ppm, silver to 2.2 ppm, and gold to 0.2 ppm. Christie (1974) reported covered area to west of anomaly was large enough to hide a porphyry system but lack of copper mineralization makes possibility unlikely.

Comment (Exploration): Status = Inactive

Comment (Reference): Primary Reference = Christie, 1974

Comment (Geology): Geologic Description = Color anomaly 12,000 ft by more than 5,000 ft (3,600 m by 1,500+ m) localized around a number of medium-grained granodiorite dikes and a 2,000 by 2,000+ ft (600 by 600+ m) granodiorite plug. Granodiorite intrudes andesite flows and volcaniclastic rocks of the Belkofski(?) Formation.

Comment (Deposit): Model Number = 22c, 25

Comment (Deposit): Other Comments = Interpretation of andesitic host rocks as Belkofski Formation is based on the reporter's (F.H. Wilson) knowledge of the area and not on Christie's (1974) or MacKevett and Holloway's (1977) report.

Comment (Deposit): Model Name = Polymetallic vein, epithermal gold vein

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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