Cleary Hill Mine

Past Producer in Alaska, United States with commodities Gold, Antimony, Silver, Copper, Lead, Tin, Tungsten, Zinc

Geologic information

Identification information

Deposit ID 10002938
MRDS ID A015431
Record type Site
Current site name Cleary Hill Mine
Alternate or previous names Rhoads-Hall Mine
Related records 10111975

Geographic coordinates

Geographic coordinates: -147.43768, 65.0669 (WGS84)
Relative position 25 MILES NE OF FAIRBANKS BY ROAD.
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Geographic areas

Country State
United States Alaska

Comments on the location information

  • USGS MF-413, LOC. 39. MINE MARKED ON LIVENGOOD (A-1) ALONG BEDROCK CREEK, A TRIBUTARY OF CLEARY CREEK. DEPOSITS EAST OF CREEK. 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
Antimony Primary
Silver Secondary
Copper Tertiary
Lead Tertiary
Tin Tertiary
Tungsten Tertiary
Zinc Tertiary

Materials information

Materials Type of material
Cassiterite Ore
Chalcopyrite Ore
Galena Ore
Gold Ore
Jamesonite Ore
Scheelite Ore
Sphalerite Ore
Stibnite Ore
Pyrite Gangue

Alteration

  • (Local) Some Oxidation Products In Lowest Areas Of Mine.

Analytical data

Result AVERAGE FINENESS 818 PARTS AU AND 169 PARTS AG PER THOUSAND.

Host and associated rocks

  • Host or associated Host
    Rock type Metamorphic Rock > Schist

Nearby scientific data

(1) -147.43768, 65.0669

Ore body information

  • Strike N 75 W
    Dip 45 TO 63 S

Comments on the geologic information

  • VEINS ARE CRUSHED, RECEMENTED, CROSS FOLIATION OF SCHIST COUNTRY ROCK, AND ARE COMPLEXLY FAULTED, MAKING MINING DIFFICULT. VEINS CUT CREST OF LOW ANTICLINE, MUCH BROKEN BY AN INTRICATE SYSTEM OF FAULTS. FAULTS WITH THE GREATEST THROW STRIKE PARALLEL TO VEIN. ONE ZONE OF CONTORTED SCHIST AND GOUGE 30-40 FT. WIDE.

Economic information

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic
Deposit size Small
Significant No
Discoverer Rhodes And Hall
Year of first production 1909

Mining district

District name Fairbanks

Land status

Ownership category State

Ownership information

  • Type Owner
    Owner Alaska Gold Mines Co.

Comments on the workings information

  • OVER 3,000 FT. OF UNDERGROUND WORKINGS. MAIN TUNNEL DRIVEN ALONG VEIN FOR 1,280 FT.

Comments on development

  • MAJOR LODE-GOLD MINE IN DISTRICT-MINING REPORTED IN 1909-15, 1927, 1929-42, AND 1949. MILL ON PROPERTY. ELEVEN CLAIMS. MILL OPERATED ON ORE FROM OTHER MINES AT TIMES.

Reference information

Links to other databases

Agency Database name Acronym Record ID Notes
USGS Mineral Resources Data System MRDS A015431

Bibliographic references

  • Deposit

    USGS MF-413 (A-1), LOC. 39

  • Deposit

    USGS BULL 525, P. 177-180

  • Deposit

    USGS BULL. 849-B, P. 93-96

General comments

Subject category Comment text
Deposit LODE IS GOLD, STIBNITE, ARSENOPYRITE, PYRITE, SPHALERITE, GALENA, CHALCOPYRITE, JAMESONITE, COVELLITE, AND SCHEELITE BEARING VEINS CUTTING SCHIST IN FAULT ZONE. GOLD INTRODUCED AT TWO DIFFERENT STAGES; FIRST WITH QUARTZ AND SECOND WITH SULFIDES. GOLD IRREGULARLY DISTRIBUTED THROUGH VEIN MATERIAL IN VISIBLE PARTICLES UNCOMBINED WITH OTHER ELEMENTS. IN SOME PLACES THE VEIN IS RICHEST ADJACENT TO WALLS; IN OTHER PLACES IT IS RICHEST IN CENTER. SULPHIDE RICH PORTIONS OF VEINS ALSO CONTAIN GOLD. PRINCIPAL VEIN AVERAGES ABOUT 1 FT. IN THICKNESS; MAXIMUM THICKNESS 3 FT. SMALLER PARALLEL VEINS IN BOTH HANGING AND FOOTWALLS. AT LEAST ONE INTERSECTING VEIN IS LARGELY STIBNITE. THIN LIMESTONE BEDS IN SCHIST CONTAIN SCHEELITE. CASSITERITE IN WEATHERED VEIN MATERIAL.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-JUN-1987 Powers, M.T. (Huber, D.F.) U.S. Geological Survey