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Overholt Lode

Past Producer in Mineral county in Colorado, United States with commodities Silver, Gold, Copper, Antimony
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Geologic information

Identification information

Deposit ID 10101727
MRDS ID D007959
Record type Site
Current site name Overholt Lode
Related records 10118581

Geographic coordinates

Geographic coordinates: -106.93618, 37.87251 (WGS84)
Elevation 2835
Location accuracy 100(meters)
Relative position 1.4 MILES N20W FROM CREEDE (B.M. 8853 AT NORTH END OF TOWN)
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Geographic areas

Country State County
United States Colorado Mineral

Public Land Survey System information

Meridian Township Range Section Fraction State
New Mexico 042N 001W 24 CENTER OF N2 OF SW Colorado

Comments on the location information

  • S-T-R, LAT-LONG, AND ELEV DETERMINED FROM EMMONS AND LARSEN'S (1923) TOPO MAP (1:24,000). MINE OR CLAIM LIES 2047 FT FROM PORTAL OF NELSON TUNNEL. ; INFO FROM LAND.ST :(1976)

Commodities

Commodity Importance
Silver Primary
Gold Primary
Copper Secondary
Antimony Tertiary

Materials information

Materials Type of material
Chalcopyrite Ore
Amethyst Gangue
Barite Gangue

Alteration

  • (Local) Limonite, Copper Carbonates

Analytical data

Result 39 TO 40 OZ/TON AG, $0.60/TON AU

Host and associated rocks

  • Host or associated Associated
    Rock type Volcanic Rock (Aphanitic) > Felsic Volcanic Rock > Rhyolite
    Rock unit name Campbell Mtn. Member Of Bachelor Mtn. Rhyolite
    Rock description Campbell Mtn. Mbr. Of Bachelor Mtn. Rhyolite
    Stratigraphic age (youngest) Oligocene
    Stratigraphic age (youngest) Oligocene
    Stratigraphic age (youngest) Oligocene
    Stratigraphic age (youngest) Oligocene
  • Host or associated Host
    Rock type Volcanic Rock (Aphanitic) > Felsic Volcanic Rock > Rhyolite
    Rock unit name Campbell Mtn. Member Of Bachelor Mtn. Rhyolite
    Rock description Campbell Mtn. Mbr. Of Bachelor Mtn. Rhyolite

Nearby scientific data

(1) -106.93618, 37.87251
ListMap

Geologic structures

Type Description Terms
Regional San Juan Volcanic Field; La Garita, Creede, And Bachelor Calderas
Local Creede Graben; Amethyst Fault Zone

Ore body information

  • Strike N40-45W
    Dip 70 TO 85 SW
    Depth to bottom 365.76M
    Depth to top 274.32M
    Width 1.52M

Controls for ore emplacement

  • Fracture Zone Subparallel To And In Hanging Wall Of Amethyst Fault Zone

Economic information

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic
Deposit size Small
Significant No
Discovery year 1892
Discovery method Ore-Mineral In Place

Mining district

District name Creede District

Land status

Ownership category Private

Comments on the workings information

  • 300-FT LONG RAISE WITH SHORT STOPES AND DRIFTS. SAME VEIN IS APPARENTLY WORKED AT SW END OF OVERHOLT CROSSCUT OFF MCCLURE DRIFT AND CROSSCUT ON COMMODORE 5 LEVEL

Comments on development

  • LODE DISCOVERED DURING DRIVING OF NELSON TUNNEL AT DISTANCE OF 2047 FT FROM PORTAL

Reference information

Links to other databases

Agency Database name Acronym Record ID Notes
USGS Mineral Resources Data System MRDS D007959
U.S. Bureau of Mines Minerals Availability System MAS 0080790071

Bibliographic references

  • Deposit

    EMMONS, W.H., AND LARSEN, E.S. 1923, GEOLOGY AND ORE DEPOSITS OF THE CREEDE DISTRICT, COLORADO: USGS BULL. 718, 198 P.

  • Deposit

    STEVEN, T.A., AND RATTE, J.C., 1965, GEOLOGY AND STRUCTURAL CONTROL OF ORE DEPOSITION IN THE CREEDE DISTRICT, SAN JUAN MOUNTAINS, COLORADO: USGS PROF. PAPER 487, 90 P.

  • Deposit

    LINDEMANN, J.W., AND OTHERS, EDS., 1981, FIELD TRIP NOTES, CREEDE MINING DISTRICT, SAN JUAN VOLCANIC PROVINCE, COLORADO: DENVER REGIONAL EXPLORATION GEOLOGISTS SOC. GUIDEBOOK

General comments

Subject category Comment text
Deposit ATTITUDE IS FOR FRACTURED, SHEETED ZONE THAT, ON TUNNEL LEVEL, CONTAINS THREE VEINS AT N15E, 35-70 SE
Deposit Discovery Year: EARLY 1890S

Reporter information

Type Date Name Affiliation Comment
Reporter 01-SEP-81 Schwochow, Stephen D. Colorado Geological Survey