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

Percy Prospect

Occurrence in Alaska, United States with commodity Iron
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Sections on this page
  1. Identification information
  2. Geographic coordinates
  3. Site location context
  4. Geographic areas
  5. Commodities
  6. Host and associated rocks
  7. Nearby scientific data
  8. Economic information about the deposit and operations
  9. Mining district
  10. Links to other databases
  11. Bibliographic references
  12. General comments
  13. Reporter information

Geologic information

Identification information

Deposit ID 10001631
MRDS ID A012396
Record type Site
Current site name Percy Prospect
Related records 10258789

Geographic coordinates

Geographic coordinates: -131.59258, 54.94474 (WGS84)
Location accuracy 2000(meters)

Site location context

Political divisions (FIPS codes)

Prince of Wales-Hyder(Census area)

Alaska(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Prince Rupert D-5(quadrangle 1:63,360 scale)

Duke Island(quadrangle 1:100,000 scale)

Prince Rupert(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Ketchikan(hydrologic unit)

Southern 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)

Geographic areas

Country State
United States Alaska

Comments on the location information

  • USGS OFR 78-73B, LOC. 157 LAND STATUS VALUE CALCULATED 6-94 USING GIS OVERLAY ANALYSIS WITH BLM 1:2,500,000 SCALE OWNERSHIP STATUS MAP (1991). LAND STATUS VALUE CALCULATED 6-94 USING GIS OVERLAY ANALYSIS WITH BLM 1:2,500,000 SCALE OWNERSHIP STATUS MAP (1991).

Commodities

Commodity Importance
Iron Primary

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock > Mafic Intrusive Rock > Gabbro
    Stratigraphic age (youngest) Late Cretaceous
    Stratigraphic age (youngest) Late Cretaceous
  • Host or associated Associated
    Rock type Plutonic Rock > Ultramafic Intrusive Rock > Pyroxenite
    Rock unit name Percy Islands Ultramafic Complex
    Rock description Percy Islands Ultramafic Complex
  • Host or associated Associated
    Rock type Plutonic Rock > Ultramafic Intrusive Rock > Hornblendite
  • Host or associated Host
    Rock type Plutonic Rock > Ultramafic Intrusive Rock > Hornblendite

Nearby scientific data

(1) -131.59258, 54.94474
ListMap

Economic information

Comments on the geologic information

  • OLIVINE PYROXENITE WITH BORDER ZONE OF TITANIFEROUS MAGNETITE BEAR ING HORNBLENDE PYROXENITE; INTRUDED INTO GABBRO

Economic information about the deposit and operations

Development status Occurrence
Commodity type Metallic
Deposit size Small
Significant No

Mining district

District name Ketchikan

Comments on development

  • PRIVATE DRILLING HAS BEEN DONE

Reference information

Bibliographic references

  • Deposit

    USGS OFR 78-73B, LOC. 157

  • Deposit

    TAYLOR, H.P. AND NOBLE, J.A., 1960, ORIGIN OF THE ULTRAMAFIC COMPLEXES IN SOUTHEASTERN ALASKA: INTERNAT. GEOL. CONG., 21ST, COPENHAGEN, REPT; PT. 13, P. 181

  • Deposit

    USGS OFR 78-73M, P. 24-25

  • Deposit

    USGS BULL 1246, P. 183

  • Other Database

    BAG-OFR-78-73B-157

General comments

Subject category Comment text
Deposit TITANIFEROUS MAGNETITE-BEARING HORNBLENDE PYROXENITE IN ULTRAMAFI C PLUTON
Deposit GEOLOGIC DATA ALSO APPLIES TO: COW PROSPECT AND STEBBINS PROSPECT SEE ALSO: DUKE ISLAND ULTRAMAFIC COMPLEX ; INFO.SRC : 1 PUB LIT; 2 UNPUB REPT

Reporter information

Type Date Name Affiliation Comment
Reporter 01-OCT-1986 Leonard, Kenneth R. (Elliott, R. L.) 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.