Ginny Creek

The Ginny Creek is a 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: Ginny Creek

Commodity

Primary: Lead
Primary: Zinc
Secondary: Silver
Secondary: Copper

Location

State: Alaska
District: Noatak

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: Iron-staining, leaching

Rocks

Not available

Analytical Data

Not available

Materials

Ore: Chalcopyrite
Ore: Galena
Ore: Sphalerite
Gangue: Pyrite
Gangue: Siderite

Comments

Comment (Exploration): Status = Inactive

Comment (Workings): Workings / Exploration = Analyzed samples contain 0.3-1% Zn and variable Pb concentrations (Mayfield and others, 1979, p. 9-17)

Comment (Geology): Geologic Description = Sphalerite, galena, pyrite, and rare chalcopyrite occur mainly as minute crystals scattered throughout mineralized sandstone, which also contains considerable siderite where mineralized and none elsewhere. Thin quartz veins cut the sedimentary beds; most are barren, but sulfides occur sparsely in some of them. Rock and stream sediment samples indicate that the deposit may also contain silver, but the mineral(s) in which silver occurs has not been determined. Mineralized area is at least 1 mile long and up to 1/2 mile wide. Deposit apparently formed by hydrothermal open-space filling and replacement rather than by hot-spring deposition on sea floor; deposit is in lowest (Brooks Range) thrust sequence in area. Surface rubble is a discontinuous mixture of gossan and partly iron-stained sandstone. Sulfides are preserved only in the least weathered surface rocks. Surface leaching produces a pitted appearance on many of the limonite-rich rocks. Deposit is in region of extreme thrust faulting.

Comment (Reference): Primary Reference = Mayfield and others (1979, OFR 79-1092)

Comment (Deposit): Model Name = Sediment-hosted Pb-Zn.

Comment (Deposit): Other Comments = See MAS/MILS Sequence # 0020190007 (USBM, 1995)

References

Reference (Deposit): Cobb, E.H., Mayfield, C.F., and Brosge, W.P., 1981, Summaries of data on and lists of references to metallic and selected nonmetallic mineral occurrences in eleven quadrangles in northern Alaska (Arctic, Baird Mountains, Chandler Lake, DeLong Mountains, Demarcation Point, Howard Pass, Misheguk Mountain, Mount Michelson, Noatak, Point Lay, and Table Mountain); Supplement to Open-File Report 75-628; Part A, Summaries of data to January 1, 1981: U.S. Geological Survey Open-File Report 81-767-A, 25 p.

Reference (Deposit): Curtis, S.M., Ellersieck, I.F., Mayfield, C.F., and Tailleur, I.L., 1980, Silver, copper, lead, and zinc stream-sediment geochemical anomalies in Misheguk Mountain quadrangle, Alaska: U.S. Geological Survey Open-File Report 80-315, scale 1:250,000.

Reference (Deposit): Mayfield, C.F., Curtis, S.M., Ellersieck, I., and Tailleur, I.L., 1979, The Ginny Creek zinc-lead-silver and Nimiuktuk barite deposits, northwestern Brooks Range, Alaska: U.S. Geological Survey Circular 804B, p. B11-B12.

Reference (Deposit): Mayfield, C.F., Curtis, S.M., Ellersieck, I.F., and Tailleur, I.L., 1979, Reconnaissance geology of the Ginny Creek zinc-lead-silver and Nimiuktuk barite deposits, northwestern Brooks Range, Alaska: U.S. Geological Survey Open-File Report 79-1092, 20 p., 2 over-size sheets

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