Margerie

The Margerie is a gold, silver, tungsten, copper, and cobalt 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

Name: Margerie

State: Alaska

County: na

Elevation:

Commodity: Gold, Silver, Tungsten, Copper, Cobalt

Lat, Long: 59.01, -137.09000

Map: View on Google Maps

Satelite View

MRDS mine locations are often very general, and in some cases are incorrect. Some mine remains have been covered or removed by modern industrial activity or by development of things like housing. The satellite view offers a quick glimpse as to whether the MRDS location corresponds to visible mine remains.

Satelite image of the Margerie

Margerie MRDS details

Site Name

Primary: Margerie
Secondary: Margarie Glacier
Secondary: Margerie Copper-Gold Prospect
Secondary: Leo Mark Anthony
Secondary: Moneta Porcupine Mines
Secondary: Moneta Porcupine
Secondary: Moneta Porcupine Co.
Secondary: Margerie Nos. 1-6
Secondary: Tarr Inlet
Secondary: Margerie Glacier Porphyry-Copper
Secondary: Margerie Glacier Porphyry Copper Deposit

Commodity

Primary: Gold
Primary: Silver
Primary: Tungsten
Primary: Copper
Primary: Cobalt
Secondary: Molybdenum
Secondary: Zinc
Tertiary: Bismuth
Tertiary: Barium-Barite
Tertiary: Arsenic

Location

State: Alaska
District: Juneau (Glacier Bay subdistrict)

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
Discovery Year: 1960
Years of Production:
Organization:
Significant: Y

Physiography

Not available

Mineral Deposit Model

Model Name: Porphyry Cu (North America)
Model Name: Porphyry Cu

Orebody

Not available

Structure

Not available

Alterations

Alteration Text: Plagioclase has been subjected to moderate sericitization and K-spar alteration, and biotite has been moderately chloritized (Brew and others, 1978).

Rocks

Not available

Analytical Data

Not available

Materials

Ore: Sphalerite
Ore: Molybdenite
Ore: Gold
Ore: Chalcopyrite
Ore: Arsenopyrite
Gangue: Quartz
Gangue: Pyrrhotite
Gangue: Pyrite

Comments

Comment (Reference): Primary Reference = Brew and others, 1978

Comment (Exploration): Status = Probably inactive

Comment (Deposit): Other Comments = The deposit is within Glacier Bay National Park and Preserve where exploration and development is restricted.

Comment (Deposit): Model Name = Copper porphyry with associated veins, pods, and disseminations (Cox and Singer, 1986; model 17).

Comment (Geology): Age = Tertiary (Brew and others, 1978).

Comment (Geology): Geologic Description = The following description is summarized from Brew and others (1978). The Margerie prospect is a porphyry copper deposit. Disseminated chalcopyrite, pyrite, pyrrhotite, and powellite-scheelite occur in a massive porphyritic, Tertiary quartz monzodiorite stock and associated dikes. The stock contains a porphyritic quartz monzonite core. A prominent joint set that trends N50E and dips steeply to the northwest cuts across the stock and extends into the surrounding Permian section of hornfelsed marine volcanic and sedimentary rocks. Porphyritic monzodiorite dikes up to 50 feet thick and quartz-sulfide veins up to 1.7 feet thick occupy the joint set. The dikes extend into the country rock but the veins do not. The veins, which are less important than disseminated mineralization, contain quartz, chalcopyrite, arsenopyrite, sphalerite, pyrite, pyrrhotite, powellite-scheelite, and molybdenite. Disseminated sulfide mineralization, primarily chalcopyrite, pyrite, pyrrhotite, and some powellite-scheelite, is largely confined to the stock and dikes. Where dikes extend into the surrounding marine sedimentary rocks, they contain much less disseminated sulfides. The joint system may have acted as the conduit for sulfide mineralization that replaced mafic minerals in the intrusive rocks. Plagioclase has been subjected to slight to moderate sericitization and K-spar alteration and biotite has been moderately chloritized. Limited investigation of the marine sedimentary rock section northeast of the stock did not reveal significant mineralization. However, the Permian marine volcanic and sedimentary rocks to the southwest of the stock contained various iron-stained zones, fault and fracture fillings of quartz and sulfides, and lenses of massive pyrite, pyrrhotite, and chalcopyrite. The Margerie prospect is within the Tarr Inlet suture zone, which forms the western boundary of the Geike province of Brew and others (1978). Based on the age of the host stock and dikes, the mineralization is Tertiary.

Comment (Workings): Workings / Exploration = Brew and others (1978) cite the following sequence of activity at the Margerie prospect. The prospect was discovered by Leo Mark Anthony in 1960 and 6 claims were staked that year. Investigations were made by E. M. MacKevett of the USGS in 1966, George Moerlein in 1968 and the U.S. Bureau of Mines in 1975 and 1976. A Masters thesis by M. A. Parke was in preparation in 1978.

Comment (Reserve-Resource): Reserves = As part of the mineral resources study of the Glacier Bay National Monument by Brew and others (1978), the U.S. Bureau of Mines estimated the deposit to contain 160 million tons of inferred resource that contain 0.2% copper, 0.008 ounces of gold per ton, 0.13 ounces of silver per ton, and 0.01% tungsten.

References

Reference (Deposit): Nokleberg, W.J., Bundtzen, T.K., Berg, H.C., Brew, D.A., Grybeck, D.J., Robinson, M.S., Smith, T.E., and Yeend, W., 1987, Significant metalliferous lode deposits and placer districts of Alaska: U.S. Geological Survey Bulletin 1786, 104 p.

Reference (Deposit): Cobb, E.H., 1981, Summaries of data on and lists of references to metallic and selected nonmetallic mineral occurrences in the Skagway quadrangle, Alaska; Supplement to Open-File Report 78-316; Part A, Summaries of data to January 1, 1980: U.S. Geological Survey Open-File Report 81-82-A, 11 p.

Reference (Reserve-Resource): Brew, D.A., Johnson, B.R., Grybeck, D., Griscom, A., Barnes, D.F., Kimball, A.L., Still, J.C., and Rataj, J.L., 1978, Mineral resources of the Glacier Bay National Monument Wilderness Study Area, Alaska: U.S. Geological Survey Open-File Report 78-494, 670 p.

Reference (Deposit): Berg, H.C., 1984, Regional geologic summary, metallogenesis, and mineral resources of southeastern Alaska: U.S. Geological Survey Open-file Report 84-572, 298 p., 1 plate, scale approx. 1:600,000.

Reference (Deposit): Cobb, E.H., 1981, Summaries of data and lists of references to metallic and selected nonmetallic mineral occurrences in the Skagway quadrangle, Alaska, Supplement to Open-File Report 78-316, Part A in Summaries of data to January 1, 1980: U.S. Geological Survey Open-File Report 81-82-A, 11 p.

Reference (Deposit): Still, J.C., 1991, Bureau of Mines mineral investigations in the Juneau mining district, Alaska, 1984 - 1988, v. 2, Detailed mine, prospect, and mineral occurrence descriptions, section B, Glacier Bay subarea: U.S. Bureau of Mines of Mines Special Publication, 69 p.

Reference (Deposit): Moerlein, G.A., 1968, Geology and drilling results, Nunatak molybdenum prospect, Walper property, southeastern Alaska: Unpublished report available at U.S. Bureau of Land Management Library at Juneau, Alaska.

Reference (Deposit): MacKevett, E.M., Jr., Brew, D.A., Hawley, C.C., Huff, L.C., and Smith, J.G., 1967, Mineral resources of Glacier Bay National Monument, Alaska: U. S. Geological Survey Open-File Report 151, 176 p.

Reference (Deposit): Anthony, L.M., 1977, unpublished maps and notes on investigations in Glacier Bay, 1958-1960: (Unpublished material available at the Juneau Mineral Information Center, U.S. Bureau of Land Management, Juneau, Alaska).

Reference (Deposit): Cobb, E.H., 1972, Metallic mineral resources map of the Skagway quadrangle, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-424, 1 sheet, scale 1:250,000.

Reference (Deposit): MTA 82 No. F-6

Reference (Ownership): Alaska Kardex 109-057

Reference (Deposit): MacKevett, E.M., Jr., Brew, D.A., Hawley, C.C., Huff, L.C., and Smith, J.G., 1971, Mineral resources of Glacier Bay National Monument, Alaska: U.S. Geological Survey Professional Paper 632, 90 p., 12 plates, scale 1:250,000.

Reference (Deposit): Hollister, V.F., Anzalone, S.A., and Richter, D.H., 1975, Porphyry copper belts of southern Alaska and contiguous Yukon Territory: Canadian Mining and Metallurgical Bulletin, v. 68, no. 756, p. 104-112.

Reference (Deposit): Berg, H.C., Decker, J.E., and Abramson, B.S., 1981, Metallic mineral deposits of southeastern Alaska: U.S. Geological Survey Open-File Report 81-122, 136 p., 1 sheet, scale 1:1,000,000.
Pages: 111

Reference (Deposit): McGee, D.L., 1974, Glacier Bay National Monument evaluation of mineral deposits: Alaska Division of Geological & Geophysical Surveys Alaska Open-File Report 47, 17 p., 1 sheet, scale 1:250,000.
Pages: 16

Reference (Deposit): Cobb, E.H., 1978, Summary of references to mineral occurrences (other than mineral fuels and construction materials) in the Mt. Fairweather and Skagway quadrangles, Alaska: U.S. Geological Survey Open-File Report 78-316, 127 p.
Pages: 95

Reference (Deposit): Cobb, E.H., 1975, Tungsten occurrences in Alaska, U.S. Geological Survey Mineral Investigations Resource Maps MR-66.

Reference (Deposit): Carter, Claire, ed., 1974, United States Geological Survey Alaska Program, 1974: U.S. Geological Survey Circular 700, 63 p.
Pages: 53-54

Reference (Deposit): Cobb, E.H., 1981, Summaries of data on and lists of references to metallic and selected nonmetallic mineral occurrences in the Skagway Quadrangle, Alaska, supplement to Open-file report 78-316; Part B, Lists of references to January 1, 1980: U.S. Geological Survey Open-File Report 81-82-B, 9 p.

Reference (Deposit): U.S. Geological Survey Staff, 1972, Geological survey research 1972; Chapter C: U.S. Geological Survey Professional Paper 800-C, p. B1-B281.
Pages: 159

The Top Ten Gold Producing States

These ten states contributed the most to the gold production that built the West from 1848 through the 1930s. The Top Ten Gold Producing States.