South of Spruce Mtn. Altered Zone Gold-Silver Occurrence

Occurrence in Alaska, United States with commodities Gold, Silver, Lead, Zinc, Copper

Geologic information

Identification information

Deposit ID 10002432
MRDS ID A013353
Record type Site
Current site name South of Spruce Mtn. Altered Zone Gold-Silver Occurrence
Related records 10185408

Geographic coordinates

Geographic coordinates: -133.26915, 57.57558 (WGS84)
Relative position 2.8 MI. E OF HEAD OF WINDHAM BAY
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Geographic areas

Country State
United States Alaska

Comments on the location information

  • USGS B 1525, FIGS. 43, 47 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
Silver Primary
Lead Secondary
Zinc Tertiary
Copper Tertiary

Materials information

Materials Type of material
Chalcopyrite Ore
Gold Ore
Sphalerite Ore
Pyrite Gangue
Pyrrhotite Gangue
Quartz Gangue

Analytical data

Result 0.25 IN. WIDE QUARTZ VEIN SAMPLE 4S164 ASSAYS 0.5 PPM AU, 150 PPM AG, 2.1% PB, 0.48% ZN, 0.21% CU. 50 FT. IRON-STAIN SCHIST CHIP SAMPLE 4S158 ASSAYS 10 PPM AU, 10 PPM AG. DATA FROM REF. 1, TABLE 18, P. 274.

Host and associated rocks

  • Host or associated Host
    Rock type Metamorphic Rock > Schist
    Stratigraphic age (youngest) Late Cretaceous

Nearby scientific data

(1) -133.26915, 57.57558

Geologic structures

Type of structure Local
Structure description Foliation Strikes Nw, Dips 75 Degrees W

Economic information

Economic information about the deposit and operations

Development status Occurrence
Commodity type Metallic
Deposit size Small
Significant No

Mining district

District name Petersburg

Land status

Ownership category National Forest

Comments on the workings information

  • NO MENTION OF WORKINGS, OTHER THAN CHANNEL SAMPLES BY USBM, USGS.

Comments on development

  • BIG DIAMOND AND OREGON GIRL CLAIMS STAKED IN VICINITY ABOUT 1900. SAMPLED BY USBM, USGS IN 1974 FOR B 1525.

Reference information

Links to other databases

Agency Database name Acronym Record ID Notes
USGS Mineral Resources Data System MRDS A013353

Bibliographic references

  • Deposit

    USGS B 1525, P. 144, FIGS. 43, 47, TABLE 18, PLATES 1, 3 (1984)

  • Other Database

    BAG-B-1525-FIGS. 43, 47

General comments

Subject category Comment text
Deposit THIS SITE NAME WAS CREATED BY THE REPORTER OR OTHER USGS EMPLOYEE BASED ON PROXIMITY TO SOME MAJOR GEOGRAPHIC FEATURE.
Deposit IRON-STAINED ALTERED ZONE CONSISTS OF WHITE AND YELLOW SCHIST FOLLOWING FOLIATION OF GRAY SCHIST, AND CONTAINS DISSEMINATED PYRITE, PYRRHOTITE, SPHALERITE, CHALCOPYRITE, GALENA, AND GOLD, AND OCCASIONAL PODS OF QUARTZ. ZONE EXTENDS FROM 3,100 FT. TO 3,900 FT. ELEVATION, AND DISAPPEARS UNDER SCREE AT BOTH ENDS. ZONE IS 50-120 FT. THICK, AND CONTAINS 0.25 FT. THICK QUARTZ VEIN CONTAINING GALENA, CHALCOPYRITE, SPHALERITE, AND GOLD.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-JUN-1987 Niles, L.P. (Huber, D.F.) U.S. Geological Survey