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Alaska Chichogof Mining Co. Gold Mine

Past Producer in Alaska, United States with commodities Gold, Silver
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Geologic information

Identification information

Deposit ID 10100999
MRDS ID A013271
Record type Site
Current site name Alaska Chichogof Mining Co. Gold Mine
Related records 10185748

Geographic coordinates

Geographic coordinates: -136.10369, 57.65804 (WGS84)
Elevation 30
Relative position 0.4 MI. SW OF CHICHAGOF
(click for info)

Geographic areas

Country State
United States Alaska

Comments on the location information

  • USGS B 929, PLATE 1; USGS MF-1476-B, LOC. 16; USGS MF-467, LOC. 32 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 Secondary

Materials information

Materials Type of material
Gold Ore
Silver Ore
Quartz Gangue

Analytical data

Result ORE HAD ASSAY VALUE SLIGHTLY GREATER THAN 1 OZ/TON AU-USGS B 929, P. 130

Host and associated rocks

  • Host or associated Host
    Rock type Sedimentary Rock > Clastic Sedimentary Rock > Siltstone
    Rock unit name Sitka Graywacke;
    Rock description Sitka Graywacke;

Nearby scientific data

(1) -136.10369, 57.65804
ListMap

Geologic structures

Type of structure Local
Structure description Graywacke Strikes N 64 Degrees-78 Degrees W And Dips 73 Degrees-75 Degrees Sw

Ore body information

  • Thickness 1.52M
    Depth to bottom 43.28M
    Depth to top 4.57M
    Length 17.07M

Controls for ore emplacement

  • Fault Zone Containing Vein

Comments on the geologic information

  • SMALL DIKE IN GRAYWACKE OFFSET 4 FT. BY FAULT.

Economic information

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic
Deposit size Small
Significant No
Discovery year 1928
Discoverer Mike Mckallick
Year of first production 1936
Year of last production 1936

Mining district

District name Chichagof

Land status

Ownership category National Forest

Workings at the site

  • Type of workings Underground
    Length 205.74M
    Overall depth 43.28M

Comments on the workings information

  • DRIFT DRIVEN 115 FT, THEN BRANCHING INTO 195 FT. NORTH TUNNEL, WITH 70 FT BRANCH, AND 115 FT. SOUTH TUNNEL. INCLINED SHAFT DIPPING 65 DEGREES SW SUNK INTO NORTH TUNNEL AT 42 FT. BELOW SURFACE, CONTINUES TO DEPTH OF 142 FT. SHAFT FLOODED AS OF 1938, WAS PUMPED OUT IN 1939.

Comments on development

  • TUNNEL STARTED IN 1928 BY MIKE MCKALLICK, CLAIMS LATER BOUGHT OUT BY NICK BEZ (ALASKA CHICHAGOF MINING CO.). PRODUCTION IN 1936 ONLY, DEVELOPMENT WORK RESUMED IN 1939, BUT NO PRODUCTION DATA AVAILABLE.

Reference information

Links to other databases

Agency Database name Acronym Record ID Notes
USGS Mineral Resources Data System MRDS A013271

Bibliographic references

  • Deposit

    USGS B 929, P. 130-132, PLATES 1, 3 (1941)

  • Deposit

    USGS OF 78-450, P. 5 (1978)

  • Deposit

    USGS MF-1476-B, LOC. 16, P. 6 (1982)

  • Deposit

    USGS MF-467, LOC. 32 (1972)

  • Other Database

    BAG-B-929-PL-1

General comments

Subject category Comment text
Deposit TUNNEL DRIVEN IN FAULT ZONE IN SHALY GRAYWACKE FOLLOWS QUARTZ VEIN UP TO 5 FT. THICK FOR UP TO 56 FT.. ORE MINED OVER STOPE LENGTH OF 10-35 FT., AND FROM 142 FT. DOWN IN THE SHAFT TO WITHIN 15 FT. OF THE SURFACE.
Deposit NO RECORD OF WORK SINCE 1939, IF ANY. ; INFO.SRC : 1 PUB LIT

Reporter information

Type Date Name Affiliation Comment
Reporter 01-JUN-1987 Leonard, Kenneth R. (Huber, Donald F.) U.S. Geological Survey
Editor 14-SEP-1994 Waller, Nichelle (Mosier, Dan) U.S. Geological Survey PARSED OUT HOST ROCK AND ASSOCIATED ROCK TYPES, AGES, UNIT NAMES, AND UNIT AGES.