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Comet & Kensington Mines

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

Identification information

Deposit ID 10000505
MRDS ID A010695
Record type Site
Current site name Comet & Kensington Mines
Alternate or previous names Eureka, Sherman Creek

Geographic coordinates

Geographic coordinates: -135.07984, 58.86225 (WGS84)
Location accuracy 1000(meters)
Relative position Point Within 2500 Ft Of Each Of Two Consolidated Mines
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Geographic areas

Country State
United States Alaska

Comments on the location information

  • COMET AND KENSINGTON MINES AND OTHER LESSER PROPERTIES WERE CONSOLIDATED IN 1915 (APPROX). LOCATION GIVEN IS ABOUT MIDWAY BETWEEN COMET & KENSINGTON (AND WITHIN HALF MILE OF EACH). LAND STATUS VALUE CALCULATED 6-94 USING GIS OVERLAY ANALYSIS WITH BLM 1:2,500,000 SCALE OWNERSHIP STATUS MAP (1991).; PREVIOUS QUAD DESIGNATION = SKAGWAY 1:250000

Commodities

Commodity Importance
Gold Primary
Lead Tertiary
Copper Tertiary

Materials information

Materials Type of material
Chalcopyrite Ore
Galena Ore
Gold Ore
Calcite Gangue
Pyrite Gangue
Quartz Gangue

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock > Mafic Intrusive Rock > Diorite
  • Host or associated Host
    Rock type Plutonic Rock > Mafic Intrusive Rock > Diorite

Nearby scientific data

(1) -135.07984, 58.86225
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Geologic structures

Type of structure Local
Structure description Veins In Comet Are In Diorite And Nearly Normal To Contact With Slate & Graywacke

Ore body information

  • General form TABULAR
    Depth to top 0M

Controls for ore emplacement

  • Veins And Stockworks Of Veins In Fracture Zones In Diorite

Economic information

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic
Deposit size Small
Significant No
Discovery year 1895

Production statistics

  • Year 1901
    Period 1897-1901
    Accuracy Estimate
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Gold Gold 6g/mt

Comments on the production information

  • COMET PRODUCTION COULD HAVE BEEN SIGNIFICANTLY MORE THAN THE RECORDED 22,250 OZ.

Workings at the site

  • Type of workings Surface/Underground
    Length 3048M
    Overall depth 304.8M

Comments on the workings information

  • LONG ADITS INTERSECTED MAIN ORES BODIES UP TO 2000 FT FROM PORTAL AND AT DEPTH OF UP TO 1000 FT BENEATH SURFACE.

Comments on development

  • ALL OR NEARLY ALL PRODUCTION 1894 TO 1904. DEVELOPMENT ACTIVITIES (SOME EXTENSIVE) OCCURRED PERIODICALLY UNTIL AT LEAST WORLD WAR II.

Reference information

Links to other databases

Agency Database name Acronym Record ID Notes
USGS Mineral Resources Data System MRDS A010695

Bibliographic references

  • Deposit

    USGS OFR 78-374, P. 42-43, 81-82

  • Deposit

    USGS B 284, P. 32-33

  • Deposit

    USGS B 446, P 40-44

  • Production

    USGS OFR 78-374

General comments

Subject category Comment text
Deposit ORE ZONES DESCRIBED AS "POCKETY" OR IN "BONANZAS".
Deposit Discovery Year: 1890'S
Deposit SEVERAL OTHER LESSER PROPERTIES IN IMMEDIATE VICINITY ARE: BEAR, JOHNSON, SEWARD, OPHIR, NORTHERN BELL, AND HORRIBLE. ALL ARE QUARTZ VEINS IN DIORITE AT OR NEAR CONTACT. NORTHERN BELL MAY HAVE HAD SIGNIFICANT PRODUCTION, BUT DATA LACKING. JOHNSON LODE CUT BY EXTENSION OF KENSINGTON ADIT. ; INFO.SRC : 1 PUB LIT

Reporter information

Type Date Name Affiliation Comment
Reporter 01-MAY-84 Elliott, R. L. U.S. Geological Survey