Cascade Copper Prospect

Occurrence in Alaska, United States with commodity Copper

Geologic information

Identification information

Deposit ID 10002383
MRDS ID A013301
Record type Site
Current site name Cascade Copper Prospect
Related records 10185385

Geographic coordinates

Geographic coordinates: -135.27503, 57.07415 (WGS84)
Elevation 183
Location accuracy 500(meters)
Relative position 2.3 MI. NE OF SITKA
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Geographic areas

Country State
United States Alaska

Comments on the location information

  • USGS MF-467, LOC. 54 LAND STATUS VALUE CALCULATED 6-94 USING GIS OVERLAY ANALYSIS WITH BLM 1:2,500,000 SCALE OWNERSHIP STATUS MAP (1991).

Commodities

Commodity Importance
Copper Tertiary

Comments on the commodity information

  • PROSPECT WAS A GOLD PROSPECT, BUT NO MENTION OF ANY GOLD FOUND IS MADE IN B 504, P. 28-29

Materials information

Materials Type of material
Chalcopyrite Ore
Pyrrhotite Gangue
Quartz Gangue

Host and associated rocks

  • Host or associated Host
    Rock type Metamorphic Rock > Metasedimentary Rock > Quartzite
    Rock unit name Kelp Bay Group
    Rock description Kelp Bay Group
    Stratigraphic age (youngest) Late Jurassic

Nearby scientific data

(1) -135.27503, 57.07415

Ore body information

  • Width 6.1M
    Length 91.44M

Comments on the geologic information

  • LOCATED NEAR MAJOR FAULT ZONE, NEAR CONTACT BETWEEN JUR-TRI KELP BAY GROUP AND CRET SITKA GRAYWACK ON WEST AND CONTACT WITH GABBRO ON EAST.

Economic information

Economic information about the deposit and operations

Development status Occurrence
Commodity type Metallic
Deposit size Small
Significant No

Mining district

District name Chichagof

Land status

Ownership category State

Workings at the site

  • Type of workings Surface
    Overall length 91.44M
    Overall width 6.1M

Comments on the workings information

  • OPEN CUT

Comments on development

  • CASCADE CLAIM STAKED 1912. ONE OPEN CUT WAS MADE. NO MENTION OF ANY PRODUCTION, OR EVEN IF ANY GOLD WAS FOUND.

Reference information

Links to other databases

Agency Database name Acronym Record ID Notes
USGS Mineral Resources Data System MRDS A013301

Bibliographic references

  • Deposit

    USGS MF-467, LOC. 54 (1972)

  • Deposit

    USGS OF 78-450, P. 26 (1978)

  • Deposit

    USGS B 504, P. 28-29 (1912)

  • Deposit

    USBM OFR 20-73, LOC. 86 (1978)

  • Deposit

    USGS I-388, FOR REGIONAL GEOLOGY (1963)

  • Other Database

    BAG-MF-467-54

General comments

Subject category Comment text
Deposit ORE BODY CONSISTS OF SHATTERED QUARTZITE CEMENTED BY QUARTZ VEINLETS, IN PLACES MINERALIZED WITH PYRRHOTITE, ARSENOPYRITE, AND CHALCOPYRITE (EXTREMELY RARE), AND IS 300 FT. LONG AND 4-20 FT. WIDE.
Deposit THOUGH LISTED IN OF 78-450, P. 26, AND OTHERS AS A GOLD PROSPECT, NO SPECIFIC MENTION OR EVIDENCE OF GOLD IS GIVEN. ; INFO.SRC : 1 PUB LIT

Reporter information

Type Date Name Affiliation Comment
Reporter 01-JUN-87 Leonard, Kenneth R. (Huber, Donald F.) U.S. Geological Survey