Glacier Fork

The Glacier Fork is a silver, gold, copper, and tungsten 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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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.

Site Name

Primary: Glacier Fork
Secondary: Knik River - Glacier Fork

Commodity

Primary: Silver
Primary: Gold
Primary: Copper
Primary: Tungsten

Location

State: Alaska
District: Anchorage

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: N

Physiography

Not available

Mineral Deposit Model

Not available

Orebody

Not available

Structure

Not available

Alterations

Alteration Type: L
Alteration Text: Metasedimentary Rocks Are Iron-Stained (Richter, 1967).

Rocks

Not available

Analytical Data

Not available

Materials

Ore: Chalcopyrite
Ore: Scheelite
Gangue: Quartz

Comments

Comment (Workings): RICHTER (1967) REPORTED ASSAYS OF VEIN AND FLOAT SAMPLES SHOW 0.02 OZ/TON AU AND 0.08 TO 0.26 OZ/TON AG. STREAM-SEDIMENT SAMPLES TAKEN DOWNSTREAM CONTAINED SCHEELITE.

Comment (Exploration): Status = Inactive

Comment (Location): NEAR THE HEADWATERS OF GLACIER FORK OF THE KNIK RIVER, NEAR WESTERN EDGE OF UNNAMED GLACIER. ACCURATE WITHIN 2,500 FT. LOCALITY M-13 OF RICHTER (1967), LOCALITY 47 OF COBB (1972), AND LOCALITY 36 OF MACKEVETT AND HOLLOWAY (1977).

Comment (Deposit): COBB (1972) ALSO NOTES FOUR LOCALITIES (110, 111, 112, AND 113) SPREAD ALONG GLACIER FORK. THESE ALL APPEAR TO BE STREAM-SEDIMENT SAMPLES THAT CONTAINED SCHEELITE. DEPOSIT DOES NOT APPEAR RICH ENOUGH OR LARGE ENOUGH TO WARRANT FURTHER PROSPECTING (RICHTER, 1967).

Comment (Deposit): ABUNDANT IRREGULAR QUARTZ VEINS FOUND IN IRON-STAINED METASEDIMENTARY ROCKS OF THE LATE CRETACEOUS VALDEZ GROUP AND IN AN ADJACENT TERTIARY QUARTZ DIORITE STOCK. THE QUARTZ VEINS CONTAIN PYRROHOTITE AND SMALL AMOUNTS OF CHALCOPYRITE. ASSAYS OF VEIN AND FLOAT SAMPLES SHOW 0.02 OZ/TON AU AND 0.08 TO 0.26 OZ/TON AG (RICHTER, 1967).

References

Reference (Deposit): Cobb, E.H., 1972, Metallic mineral resources map of the Anchorage quadrangle, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-409, 1 sheet, scale 1:250,000.

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): Cobb, E.H., 1975, Tungsten occurrences in Alaska: U.S. Geological Survey Mineral Investigations Resource Map MR-66, 1 sheet, scale 1:250,000.

Reference (Deposit): COBB, E.H., 1979, SUMMARY OF REFERENCES TO MINERAL OCCURRENCES (OTHER THAN MINERAL FUELS AND CONSTRUCTION MATERIALS IN ANCHORAGE QUADRANGLE, ALASKA: U.S. GEOLOGICAL SURVEY OPEN-FILE REPORT 79-1095, 184 P.

Reference (Deposit): RICHTER, D.H., 1967, GEOLOGICAL AND GEOCHEMICAL INVESTIGATIONS IN THE METAL CREEK AREA, CHUGACH MOUNTAINS: ALASKA DIVISION OF GEOLOGICAL AND GEOPHYSICAL SURVEYS GEOLOGIC REPORT 25, 17 P., 1 SHEET, SCALE 1:63,360.

Reference (Deposit): COBB, E.H., 1973, PLACER DEPOSITS OF ALASKA: U.S. GEOLOGICAL SURVEY BULLETIN 1374, 213 P., 1 PLATE.

Reference (Deposit): MACKEVETT, E.M., AND HOLLOWAY, C.D., 1977, MAP SHOWING METALLIFEROUS AND SELECTED NON-METALLIFEROUS MINERAL DEPOSITS IN THE EASTERN PART OF SOUTHERN ALASKA: U.S. GEOLOGICAL SURVEY OPEN-FILE REPORT 77-169-A, 99 P., 1 SHEET, SCALE 1:1,000,000.

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