Quarry

Site Name

Primary: Quarry

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Commodity

Primary: Lead
Primary: Barium-Barite
Primary: Fluorine-Fluorite
Primary: Zinc
Primary: Silver
Secondary: Gold
Secondary: Antimony

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Location

State: Alaska
District: Nome

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Land Status

Not available

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Holdings

Not available

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Workings

Not available

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Ownership

Not available

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Production

Not available

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Deposit

Record Type: Site
Operation Category: Prospect
Operation Type: Unknown
Years of Production:
Organization:
Significant:

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Physiography

Not available

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Mineral Deposit Model

Not available

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Orebody

Not available

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Structure

Not available

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Alterations

Alteration Type: L
Alteration Text: Silicification, dolomitization, and ankeritization.

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Rocks

Not available

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Analytical Data

Not available

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Materials

Ore: Barite
Ore: Boulangerite
Ore: Fluorite
Ore: Galena
Ore: Limonite
Ore: Pyrite
Ore: Sphalerite
Gangue: Ankerite
Gangue: Aragonite
Gangue: Calcite
Gangue: Dolomite
Gangue: Quartz

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Comments

Comment (Reference): Primary Reference = Herreid, 1970

Comment (Deposit): Model Name = Stratabound replacement lode of quartz-fluorite-barite with associated galena and sphalerite.

Comment (Geology): Geologic Description = The Quarry prospect is in the contact zone of marble and underlying schist; the marble unit is probably part of the massive marble unit of Bundtzen and others (1994) the main minerals are quartz, fluorite, and barite that replace the marble. They occur with disseminated to semimassive pods of galena, sphalerite and boulangerite. Galena and sphalerite also occur as disseminations in aragonite and calcite veins. The occurrence is nearly stratabound, but cross-cutting replacement fronts of ankerite, partly oxidized to limonite, flank the mineral deposits. A large lead and zinc soil anomaly, about 2000 by 6000 feet and elongated northwesterly along the marble-schist contact, is developed over the prospect. Grab samples contained as much as 0.02 ounce gold per ton and 5.30 ounces silver per ton (Herried, 1970).? Fluid inclusion studies (Brobst and others, 1971) show that mineralization was fairly high temperature (near 250 degrees F). The abundance of fluorite and slightly anomalous amounts of elements such as beryllium led Brobst and others (1971) to suggest a Late Cretaceous age of mineralization, similar to the fluorite-rich tin deposits of the northwestern Seward Peninsula.? Herreid (1970) interpreted the mineralization as being associated with a thrust at the base of the marble unit. In general, most of the relations are also consistent with mineralization controlled by shearing between two units of differing competency. The prospect is on strike with, and in a similar structural and stratigraphic setting to, the Galena prospect (NM135) about 2 miles to the northwest.

Comment (Geology): Age = Probably Late Cretaceous; post regional metamorphism.

Comment (Exploration): Status = Probably inactive

Comment (Workings): Workings / Exploration = Some workings on the property appear to have been done about the time of World War I (Herreid, 1966, 1970). The prospect was probably re-exposed when work was done on a rock quarry for the Nome-Teller road. Fluorite-rich samples were collected by Mulligan and Hess (1965), probably from old workings. Heiner and Porter (1972) reported claim activity by Foster in 1966. The claims were later taken over by W. Hoogendorn and associates. The deposit was examined in the 1990's by Kennecott Exploration Company and by Cominco Exploration. A caved shaft probably dates from the earliest exploration.

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References

Reference (Deposit): Heiner, L.E., and Porter, Eve, 1972, Alaska Mineral Properties, volume 2: University of Alaska, Mineral Industry Research Laboratory Report 24, 669 p.

Reference (Deposit): Cobb, E.H., 1978, Summary of references to mineral occurrences (other than mineral fuels and construction materials) in the Nome quadrangle, Alaska: U.S. Geological Survey Open-File report 78-93, 213 p.

Reference (Deposit): Alaska Division of Geological and Geophysical Surveys, 1982, Mining claim location maps -- Nome quadrangle: Alaska Division of Geological and Geophysical Surveys, 8 p., 3 sheets, scales 1:63,360 and 1:250,000.

Reference (Deposit): Cobb, E.H., 1972, Metallic mineral resources map of the Nome quadrangle, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-463, 2 sheets, scale 1:250,000.

Reference (Deposit): Mulligan, J.J., and Hess, H.D., 1965, Examination of the Sinuk iron deposits, Seward Peninsula, Alaska: U.S. Bureau of Mines Open-File Report 8-65, 34 p.

Reference (Deposit): Herreid, G.H., 1970, Geology and geochemistry of the Sinuk area, Seward Peninsula, Alaska: Alaska Division of Mines and Minerals Geologic Report 36, 61 p., 3 sheets, scale 1:42,000.

Reference (Deposit): Brobst, D.A., Pinckney, D.M., and Sainsbury, C.L., 1971, Geology and geochemistry of the Sinuk River barite deposits: U.S. Geological Survey Professional Paper 750-D, p. D1-D8.

Reference (Deposit): Herreid, G.H., 1966, Preliminary geology and geochemistry of the Sinuk River area, Seward Peninsula, Alaska: Alaska Division of Mines and Minerals Geologic Report 24, 21 p., 1 sheet, scale 1:40,000.

Reference (Deposit): Bundtzen, T.K., Reger, R.D., Laird, G.M., Pinney, D.S., Clautice, K.H., Liss, S.A., and Cruse, G.R., 1994, Progress report on the geology and mineral resources of the Nome mining district: Alaska Division of Geological and Geophysical Surveys, Public Data-File 94-39, 21 p., 2 sheets, scale 1:63,360.

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