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Black King Mine

Past Producer in San Miguel county in Colorado, United States with commodities Copper, Silver, Gold, Uranium, Vanadium, Lead, Zinc, Molybdenum, Cobalt, Chromium, Titanium, Metal
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Sections on this page
  1. Identification information
  2. Geographic coordinates
  3. Site location context
  4. Geographic areas
  5. Public Land Survey System information
  6. Commodities
  7. Materials information
  8. Alteration
  9. Host and associated rocks
  10. Nearby scientific data
  11. Geologic structures
  12. Controls for ore emplacement
  13. Economic information about the deposit and operations
  14. Mining district
  15. Land status
  16. Ownership information
  17. Production statistics
  18. Links to other databases
  19. Bibliographic references
  20. General comments
  21. Reporter information

Geologic information

Identification information

Deposit ID 10087927
MRDS ID D010926
Record type Site
Current site name Black King Mine
Alternate or previous names Black King No. 5 Claim, Evans Claims, Weatherly Claims, Unpatented Claims: Black King No. 1, Black King No. 4, Black King No. 5
Related records 10240334

Geographic coordinates

Geographic coordinates: -108.06537, 38.03111 (WGS84)
Elevation 2371
Relative position 15.5 MILES N 65 W FROM TELLUDIRDE

Site location context

Political divisions (FIPS codes)

San Miguel(county)

Colorado(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Placerville(quadrangle 1:24,000 scale)

Nucla(quadrangle 1:100,000 scale)

Moab(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

San Miguel(hydrologic unit)

Upper Colorado-Dolores(hydrologic accounting unit)

Upper Colorado-Dolores(hydrologic subregion)

Upper Colorado(hydrologic region)

Federal lands

Bureau of Land Management(Bureau of Land Management CO)

Bureau of Land Management CO BLM(Type of land area)

BLM(Federal land areas administered by BLM)

Geographic areas

Country State County
United States Colorado San Miguel

Public Land Survey System information

Meridian Township Range Section Fraction State
New Mexico 044N 011W 27 S2 OF SW Colorado

Comments on the location information

  • WORKING LIE AT HEAD OF SMALL UNNAMED TRIBUTARY GULCH NORTH OF SAN MIGUEL RIVER 1.15 MILES NW OF PLACERVILLE. ; INFO FROM LAND.ST :1975

Commodities

Commodity Importance
Copper Primary
Silver Primary
Gold Primary
Uranium Primary
Vanadium Critical Secondary
Lead Tertiary
Zinc Critical Tertiary
Molybdenum Tertiary
Cobalt Critical Tertiary
Chromium Critical Tertiary
Titanium, Metal Critical Tertiary

Materials information

Materials Type of material
Chalcopyrite Ore
Coffinite Ore
Galena Ore
Limonite Ore
Sphalerite Ore
Barite Gangue
Calcite Gangue
Ferrimolybdite Gangue
Sericite Gangue
Skutterudite Gangue
Ilsemannite Unknown
Jordisite Unknown

Alteration

  • (Local) Oxidation Of Cu Sulfide To Carbonate; Oxidation Of Fe Sulfide To Oxide; Wallrock Bleaching

Analytical data

Result MOREHOUSE (1951) TABULATED ANALYSES OF CHANNEL SAMPLES (EACH SET OF VALUES IS RADIOMETRIC AND CHEMICAL U308): 1.07, 0.88
Result 0.52, 0.45
Result 0.39, 0.19
Result 0.18, 0.13
Result 0.22, 0.07
Result 0.14, 0.08
Result 0.02, NOT RUN
Result 0.01, NOT RUN ANALYSIS OF COMPOSITE OF 11 SAMPLES SHOWED 0.16% CU, 0.14% U308, 0.04% V205. QUALITATIVE AND SEMIQUANTITATIVE ANALYSES SHOWED 2.5% FE, 24.5 % CAC03, 0.6% S, 0.4% TI02, 0.8 OZ/TON AG, TRACES OF PB, AS, MG, AU, AND PRESENCE OF MN, MO, CO, AND ELEMENTAL C. COLEMAN AND DELEVAUX'S (1957) PYRITE SAMPLE CONTAINED 0.017 % SE.

Host and associated rocks

  • Host or associated Host
    Rock type Sedimentary Rock > Clastic Sedimentary Rock > Shale
  • Host or associated Host
    Rock type Sedimentary Rock > Clastic Sedimentary Rock > Sandstone
    Rock unit name Cutler Formation;Dolores Formation
    Rock description Cutler Formation;Dolores Formation
  • Host or associated Host
    Rock type Sedimentary Rock > Carbonate > Limestone

Nearby scientific data

(1) -108.06537, 38.03111
ListMap

Economic information

Geologic structures

Type of structure Regional
Structure description Paradox Basin, Uncompahgre Uplift, San Juan Volcanic Field, San Miguel Mtns
Type of structure Local
Structure description Black King Fault

Controls for ore emplacement

  • Nw-Trending Fault Zone Cutting Permeable Clastics And Limestone

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic
Deposit size Small
Significant No
Discovery year 1885
Year of last production 1952

Mining district

District name Lower San Miguel District

Land status

Ownership category BLM Administrative Area

Ownership information

  • Type Operator
    Owner Bachelor Corp.
    Home office Placerville
    First year 1952
  • Type Owner
    Owner G. E. Weatherly
    Home office New Castle
    First year 1952

Production statistics

  • Year 1902
    Material ORE CU AG ACC
    Description Ap_Grade: ^14.8% Cu, 3.5 Oz/Ton Ag, 0.11 Oz/Ton Au
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Gold Gold 3g/mt
    Major Ore Silver Silver 99g/mt
    Minor Ore Copper Copper 15wt-pct

Comments on the production information

  • PARTIAL PRODUCTION RECORD. PRODUCTION OF BASE AND PRECIOUS METALS FOR OTHER YEARS, IF ANY, UNKNOWN BUT CONSIDERED SMALL. 1902 FIGURES REPORTED BY HESS (1913). CUMULATIVE U/V PRODUCTION REPORTED BY NELSON-MOORE AND OTHERS BUT EXACT YEARS OF PRODUCTION UNKNOWN. 1952 URANIUM PRODUCTION CITED BY CDM.

Comments on the workings information

  • MINE DEVELOPED BY SEVERAL SMALL SURFACE CUTS, TWO INCLINED SHAFTS, AND TWO DRIFTS, NORTH INCLINED SHAFT IS 42 FT DEEP; SOUTH SHAFT INCLINED ABOUT 30 DEG TO NORTH, INTERSECTING NORTH SHAFT AT DEPTH OF 20 TO 25 FT IN NORTH SHAFT. EAST OF SHAFT IS 135-FT DRIFT DRIVEN ALONG FAULT, WITH STOPES; SECOND DRIFT OF UNKNOWN EXTENT DRIVEN WEST OF SHAFT.

Comments on development

  • CLAIMS PROBABLY LOCATED ORIGINALLY AS CU PROSPECT. ONLY REPORT OF EARLY PRODUCTION WAS CU-AG-AU ORE IN 1902. LAST REPORTED PRODUCTION WAS U ORE IN 1952.

Reference information

Bibliographic references

General comments

Subject category Comment text
Deposit MINE DEVELOPED ON BLACK KING FAULT, ONE OF PRINCIPAL FAULTS IN NW-TRENDING SYSTEM CHARACTERISTIC OF DISTRICT. FAULT TRENDS GENERALLY N 65TO 70 W (DOWNTHROWN ON NE) AND DISPLACES CUTLER FM ON SW AGAINST DOLORES FM ON NE. VEIN CARRIES BASE METAL SULFIDES AND UNUSUAL ASSEMBLAGE OF MO MINERALS, CHROMIUM MICA, AND COBALT-ARSENIC MINERALS. URANIUM OCCURS AS SCATTERED GRAINS OF URANINITE AND COFFINITE AND POSSIBLY AS ORGANIC COMPLEX DISSEMINATED THROUGH HARDENED PETROLIFEROUS HYDROCARBON OR ASPHALTIC MATERIAL (TERMED THUCHOLITE). ASPHALT OCCURS IN FAULT ZONE, AS FRACTURE FILLINGS, AND DISSEMINATION IN SEDIMENTARY ROCK. THREE VARIETIES OF RADIOACTIVE HYDROCARBON IDENTIFIED BY MOREHOUSE (1951): (1) SHINY LOUSTROUS MATERIAL WITH PROBABLE URANINITE SPECKS REPRESENTING EARLIEST STAGE AND MOST STRONGLY RADIOACTIVE; (2) DARKER GRAY SOOTY VARIETY WITH SOME SCATTERED URANINITE; (3) LIGHT GRAY LATE-STAGE BANDED MATERIAL FORMING VEINLETS CUTTING EARLIER TWO STAGES WITH MUCH LESS ABUNDANT URANINITE.
Deposit THUCHOLITE FOUND IN LIMESTONE AND CALCAREOUS SHALE ONLY IN HANGING WALL, ALONG WITH GRAY DISSEMINATED CR MICA IN FE-STAINED SANDSTONE. GENERAL PARAGENESIS (WILMARTH, 1953): CALCITE, BARITE, PYRITE, HYDROCARBONS, SULFIDES (PYRITE, CHALCOPYRITE, BORNITE, ARGENTIFEROUS TETRAHEDRITE, GALENA, SPHALERITE).
Deposit Discovery Year: 1880S?

Reporter information

Type Date Name Affiliation Comment
Reporter 01-NOV-1983 Schwochow, Stephen D. (King, Robert U.) Colorado Geological Survey

Beyond USGS

Supplemental information added by qvyshift.com. Not part of the original USGS MRDS record.

External references

Maps centered on this site

Authoritative Colorado resources

These are landing pages for further research — the state agencies don't currently expose per-mine deep links.