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Fog Pond Gold

Occurrence in Alaska, United States with commodities Gold, Copper, Silver
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Geologic information

Identification information

Deposit ID 10002151
MRDS ID A013044
Record type Site
Current site name Fog Pond Gold
Alternate or previous names Fog Lake On Iliamna C-4 Quad Map
Related records 10282491

Geographic coordinates

Geographic coordinates: -154.37205, 59.5133 (WGS84)
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Geographic areas

Country State
United States Alaska

Comments on the location information

  • USGS MF-364 LOCATION 14, ALSO USGS OFR 897, P. 5, FIG. 4, LOCATION 22, (1967). LAND STATUS VALUE CALCULATED 6-94 USING GIS OVERLAY ANALYSIS WITH BLM 1:2,500,000 SCALE OWNERSHIP STATUS MAP (1991).

Commodities

Commodity Importance
Gold Primary
Copper Tertiary
Silver Tertiary

Comments on the commodity information

  • STREAM SEDIMENT SAMPLES CONTAINED UP TO 41.6 PPM AU AND 15 PPM AG: USGS OFR 897, SAMPLE 252, TABLE 1

Materials information

Materials Type of material
Chalcopyrite Ore
Gold Ore
Pyrite Gangue
Quartz Gangue
Sericite Gangue

Alteration

  • (Local) Hydrothermal: Sericitization In The Quartz Porphyry

Analytical data

Result AU: 37.7 PPM, CU: 300 PPM, AG: 1 PPM FROM PAN CONCENTRATE OF BEDROCK SAMPLE NO. 22, USGS OFR 897, TABLE

Host and associated rocks

  • Host or associated Host
    Rock type Plutonic Rock > Porphyry

Nearby scientific data

(1) -154.37205, 59.5133
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Geologic structures

Type of structure Local
Structure description Shear Zones, Felsic Dikes

Comments on the geologic information

  • HYDROTHERMALLY ALTERED QUARTZ PORPHYRY AND MAFIC TERTIARY VOLCANICS ON SOUTH AND NORTH RESPECTIVLY, CUT BY STREAM. QUARTZ PORPHYRY CUT BY SHEAR ZONES WHICH CONTAIN PYRITE STRINGERS

Economic information

Economic information about the deposit and operations

Development status Occurrence
Commodity type Metallic
Deposit size Small
Significant No
Discovery year 1967
Discoverer Bruce L. Reed

Comments on the workings information

  • NO WORKINGS. OCCURRENCE ONLY

Comments on development

  • GEOCHEMICAL ANALYSIS OF SEDIMENT SAMPLES, BEDROCK SAMPLES, AND PAN CONCENTRATES

Reference information

Links to other databases

Agency Database name Acronym Record ID Notes
USGS Mineral Resources Data System MRDS A013044

Bibliographic references

  • Deposit

    USGS MF-364, LOCATION 14 (1972)

  • Deposit

    USGS OFR 897 P. 5, 9-12, TABLES 1, 2 (1967)

  • Deposit

    USGS OFR 81-1343A, P. A5 (1981)

  • Other Database

    BAG-MF-364-14

General comments

Subject category Comment text
Deposit SHEAR ZONES IN HYDROTHERMALLY ALTERED QUARTZ PORPHYRY CONTAINS PYRITE STRINGERS TO 0.5 IN WIDE.
Deposit PYRITE STRINGERS CONTAIN HIGHEST CONCENTRATIONS OF AU. ENCOURAGING VALUES FOR GOLD INDICATE MORE INVESTIGATION NEEDED. ; INFO.SRC : 1 PUB LIT
Deposit THIS SITE NAME WAS CREATED BY THE REPORTER OR OTHER USGS EMPLOYEE BASED ON PROXIMITY TO SOME MAJOR GEOGRAPHIC FEATURE.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-FEB-1987 Leonard, Kenneth R. (Huber, Donald F.) U.S. Geological Survey
Editor 02-SEP-1994 Mosier, Dan U.S. Geological Survey PARSED OUT HOST ROCK AND ASSOCIATED ROCK TYPES, AGES, UNIT NAMES, AND UNIT AGES.