1. Mineral Resources
  2. Online Spatial Data
  3. Mineral Resource Data System (MRDS)

South of Spruce Mtn. Altered Zone Gold-Silver Occurrence

Occurrence in Alaska, United States with commodities Gold, Silver, Lead, Zinc, Copper
Map
XML
JSON
KML
C
Sections on this page
  1. Identification information
  2. Geographic coordinates
  3. Site location context
  4. Geographic areas
  5. Commodities
  6. Materials information
  7. Host and associated rocks
  8. Nearby scientific data
  9. Geologic structures
  10. Economic information about the deposit and operations
  11. Mining district
  12. Land status
  13. Links to other databases
  14. Bibliographic references
  15. General comments
  16. Reporter information

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

Site location context

Political divisions (FIPS codes)

Hoonah-Angoon(Census area)

Alaska(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Sumdum C-4(quadrangle 1:63,360 scale)

Sumdum N(quadrangle 1:100,000 scale)

Sumdum(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Central Southeast Alaska(hydrologic accounting unit)

Southeast Alaska(hydrologic subregion)

Alaska(hydrologic region)

Federal lands

Tongass National Forest(National Forest)

National Forest FS(Type of land area)

FS(Federal land areas administered by FS)

Chuck River Wilderness(Wilderness)

Wilderness FS(Type of land area)

FS(Federal land areas administered by FS)

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 Critical 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) MzPzss
ListMap

Economic information

Geologic structures

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

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

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

Beyond USGS

Supplemental information added by qvyshift.com. Not part of the original USGS MRDS record.

Maps centered on this site

Authoritative Alaska resources

These are landing pages for further research — the state agencies don't currently expose per-mine deep links.