Hyder Mica Prospect

Occurrence in Alaska, United States with commodity Mica

Geologic information

Identification information

Deposit ID 10001644
MRDS ID A012415
Record type Site
Current site name Hyder Mica Prospect

Geographic coordinates

Geographic coordinates: -130.67449, 54.76253 (WGS84)
Location accuracy 2000(meters)
Relative position SITKLAN ISLAND
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Geographic areas

Country State
United States Alaska

Comments on the location information

  • USGS OFR 78-73B, LOC. 182 LAND STATUS VALUE CALCULATED 6-94 USING GIS OVERLAY ANALYSIS WITH BLM 1:2,500,000 SCALE OWNERSHIP STATUS MAP (1991).

Commodities

Commodity Importance
Mica Primary

Materials information

Materials Type of material
Mica Ore

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock > Pegmatite
    Stratigraphic age (youngest) Late Cretaceous
  • Host or associated Host
    Rock type Plutonic Rock > Pegmatite

Nearby scientific data

(1) -130.67449, 54.76253

Economic information

Economic information about the deposit and operations

Development status Occurrence
Commodity type Non-metallic
Deposit size Small
Significant No

Mining district

District name Hyder

Comments on the workings information

  • EXPLORED BY SEVERAL TRENCHES AND PITS

Reference information

Links to other databases

Agency Database name Acronym Record ID Notes
USGS Mineral Resources Data System MRDS A012415

Bibliographic references

  • Deposit

    USGS OFR 78-73B, LOC. 182

  • Deposit

    USGS BULL 1024-G, P. 141, 143, 154-161

  • Deposit

    USBM IC 8125, P. 44

  • Other Database

    BAG-OFR-78-73B-182

General comments

Subject category Comment text
Deposit TWO MASSIVE PEGMATITE BODIES CONTAIN MICA PLATES UP TO 20 CM ACRO SS; BENT AND BROKEN BOOKS PREDOMINATE OVER UNDEFORMED MICA

Reporter information

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