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C. H. C. Group

Past Producer in Dolores county in Colorado, United States with commodities Silver, Lead, Zinc, Sulfur-Pyrite
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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. Mineral occurrence model information
  10. Host and associated rocks
  11. Nearby scientific data
  12. Geologic structures
  13. Ore body information
  14. Controls for ore emplacement
  15. Economic information about the deposit and operations
  16. Mining district
  17. Land status
  18. Links to other databases
  19. Bibliographic references
  20. General comments
  21. Reporter information

Geologic information

Identification information

Deposit ID 10014120
MRDS ID D010762
Record type Site
Current site name C. H. C. Group
Alternate or previous names Princeton Mine, Patented Claims: C. H. C., MS 1040, Princeton, MS 2258, Crebec, MS 6130, Limestone, MS 6131, Ethlena, MS 6136
Related records 10214186

Geographic coordinates

Geographic coordinates: -108.02482, 37.7139 (WGS84)
Elevation 2883
Relative position 1.5 MILES N 10 E FROM RICO

Site location context

Political divisions (FIPS codes)

Dolores(county)

Colorado(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Rico(quadrangle 1:24,000 scale)

Dove Creek(quadrangle 1:100,000 scale)

Cortez(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Upper Dolores(hydrologic unit)

Upper Colorado-Dolores(hydrologic accounting unit)

Upper Colorado-Dolores(hydrologic subregion)

Upper Colorado(hydrologic region)

Federal lands

San Juan National Forest(National Forest)

National Forest FS(Type of land area)

FS(Federal land areas administered by FS)

Geographic areas

Country State County
United States Colorado Dolores

Public Land Survey System information

Meridian Township Range Section Fraction State
New Mexico 040N 011W 24 S2 Colorado

Comments on the location information

  • (LAND STATUS AND ADMINISTRATIVE AREA LOCATIONS CALCULATED USING GIS OVERLAY ANALYSIS FOR SAN JUAN N. F.). ON WEST SLOPE OF CHC HILL (UNSURVEYED SECTION). ELEV AND LAT-LONG GIVEN ARE FOR C.H.C. ADIT AND ARE FROM MCKNIGHT, 1974, PL.1 (1930 BASE). ; INFO FROM LAND.ST :1975

Commodities

Commodity Importance
Silver Primary
Lead Primary
Zinc Critical Primary
Sulfur-Pyrite Tertiary

Materials information

Materials Type of material
Limonite Ore
Pyrite Ore
Sphalerite Ore
Fluorite Gangue
Quartz Gangue

Alteration

  • (Local) Oxidation Of Sulfide Ores

Mineral occurrence model information

Model code 72
USGS model code 19a
Deposit model name Polymetallic replacement
Mark3 model number 47

Host and associated rocks

  • Host or associated Associated
    Rock type Volcanic Rock (Aphanitic) > Felsic Volcanic Rock > Latite
    Rock unit name Hornblende Latite Porphyry
    Rock description Hornblende Latite Porphyry
    Stratigraphic age (youngest) Paleocene
    Stratigraphic age (youngest) Pennsylvanian
    Stratigraphic age (youngest) Paleocene
    Stratigraphic age (youngest) Pennsylvanian
  • Host or associated Host
    Rock type Sedimentary Rock > Clastic Sedimentary Rock > Shale
  • Host or associated Host
    Rock type Sedimentary Rock > Clastic Sedimentary Rock > Sandstone
  • Host or associated Host
    Rock type Sedimentary Rock > Carbonate > Limestone
    Rock unit name Hermosa Formation
    Rock description Hermosa Formation

Nearby scientific data

(1) -108.02482, 37.7139
ListMap

Economic information

Geologic structures

Type of structure Regional
Structure description San Juan Uplift, Paradox Basin
Type of structure Local
Structure description Rico Dome, Blackhawk Fault, Princeton Fault

Ore body information

  • General form TABULAR, LENTICULAR

Controls for ore emplacement

  • Chemical Favorability Of Limestone And Shale For Replacement Near Major Trunk Fault

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic
Deposit size Small
Significant No
Discovery year 1879
Discoverer Charles H. Carpenter

Mining district

District name Pioneer (Rico) District

Land status

Ownership category National Forest
Area name San Juan N. F.

Comments on the workings information

  • CHC SHAFT INACCESSIBLE, DEPTH UNKNOWN; CHC TUNNEL LOCATED ABOUT 100 FT DOWN HILL AND DRIVEN GENERALLY EAST. EXTENT UNKNOWN. EXTENT UNKNOWN FOR LIMESTONE TUNNEL. CREBEC SHAFT 265 FT DEEP. PRINCETON TUNNEL DRIVEN N 61 E FOR ABOUT 400 FT, WITH AT LEAST ONE DRIFT SE TO CREBEC SHAFT.

Comments on development

  • CARPENTER LOCATED CLAIM ON WEST SLOPE OF HILL BUT ATTEMPT TO SINK SHAFT WAS UNSUCCESSFUL DUE TO MOVEMENT OF LANDSLIDE. RELOCATED SITE PROVED SUCCESSFUL AND C.H.C. BECAME ONE OF FIRST PRODUCERS IN AREA.

Reference information

Bibliographic references

  • Deposit

    MCKNIGHT, E.T., 1974, GEOLOGY AND ORE DEPOSITS OF THE RICO DISTRICT, COLORADO: USGS PROF. PAPER 723.

  • Deposit

    PRATT, W.P., AND OTHERS, 1969, GEOLOGIC MAP OF THE RICO QUADRANGLE, DOLORES AND MONTEZUMA COUNTIES, COLORADO: USGS MAP GQ-797.

  • Deposit

    RANSOME, F.L., 1901, THE ORE DEPOSITS OF THE RICO MOUNTAINS, COLORADO: USGS 22D ANN. REPT., PT. 2, P. 388-390.

  • Deposit

    CROSS, WHITMAN, AND RANSOME, F.L., 1905, DESCRIPTION OF THE RICO QUADRANGLE: USGS FOLIO 130.

  • Deposit

    BLM MINERAL SURVEYS MS 1040, 2258, 6130, 6131, 6136

General comments

Subject category Comment text
Deposit GENERALLY SOUTH-DIPPING HERMOSA FM LIMESTONE, SANDSTONE, AND SHALE COVERED BY EXTENSIVE LANDSLIDES BUT BELOW ARE CUT BY NW-TRENDING BLACKHAWK FAULT, DOWNTHROWN ON NE. NEAR CREBEC SHAFT, SW-DIPPING BLANKET REPLACEMENTS REST ON HARD, FINE-GRAINED SHATTERED SANDSTONE AND OVERLAIN BY SHATTERED GRAY SHALE. BLANKET COMPOSITION VARIES FROM (1) 4-FT-THICK MASS OF CELLULAR OR LOOSELY COHERING LIMONISTE WITH FRAGMENTS OF SANDSTONE AND ALTERED LIMESTONE TO (2) YELLOW, CLAYEY MATERIAL CONTAINING STREAK OF ARGENTIFEROUS OCHEROUS MATERIAL AND UPPER BAND OF PB SULFATE. MASSIVE PYRITE LENSES OCCUR IN SERVERAL SANDSTONE AND SHALE HORIZONS ABOVE BLANKET, SOME SEPARATED BY SEVERAL INCHES OF CRUSHED SHALE. ONE LARGE MASS OVER 40 FT THICK OCCURRED 50 FT ABOVE MAIN BLANKET AND CONSISTED OF THREE FLAT BODIES SEPARATED BY SHALE LAYERS.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-SEP-1983 Schwochow, Stephen D. Colorado Geological Survey

Beyond USGS

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

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.