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Lillie D. Mine

Past Producer in Dolores county in Colorado, United States with commodities Silver, Lead, Zinc, Copper, Gold
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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. Controls for ore emplacement
  14. Economic information about the deposit and operations
  15. Mining district
  16. Land status
  17. Ownership information
  18. Production statistics
  19. Links to other databases
  20. Bibliographic references
  21. General comments
  22. Reporter information

Geologic information

Identification information

Deposit ID 10111402
MRDS ID D010775
Record type Site
Current site name Lillie D. Mine
Alternate or previous names Patented Claims: Clan Campbell, MS 1897, Black Geroge, MS 2485, Silver Belt, MS 8020, Royal Turk, MS 8020, Unpatented Claims: Litllie D., Carrie, Zig Zag, Little Margaret, Ella, Ruth, Virginia, Little Byron, Rocky Mountain, Klondike, Madam De Farge
Related records 10142096, 10264300

Geographic coordinates

Geographic coordinates: -108.02732, 37.70834 (WGS84)
Elevation 2779
Relative position 1.1 MILES N 6 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 24,25 S2 OF SW (24); N2 OF N2 (25) Colorado

Comments on the location information

  • (LAND STATUS AND ADMINISTRATIVE AREA LOCATIONS CALCULATED USING GIS OVERLAY ANALYSIS FOR SAN JUAN N. F.). ON LOWER EAST SLOPE OF CHC HILL (UNSURVEYED SECTIONS). ELEV AND LAT-LONG GIVEN ARE FOR CLAN CAMPBELL TUNNEL (NE NW SEC. 25) AND ARE FROM MCKNIGHT, 1974, PL. 1 (1930 BASE). ; INFO FROM LAND.ST :1975

Commodities

Commodity Importance
Silver Primary
Lead Primary
Zinc Critical Secondary
Copper Secondary
Gold Secondary

Materials information

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

Alteration

  • (Local) Oxidation Of Pyrite And Pb-Zn Sulfides

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) Paleocene
    Stratigraphic age (youngest) Pennsylvanian
    Stratigraphic age (youngest) Pennsylvanian
  • Host or associated Host
    Rock type Sedimentary Rock > Clastic Sedimentary Rock > Shale
    Rock unit name Hermosa Formation
    Rock description Hermosa Formation
  • Host or associated Host
    Rock type Sedimentary Rock > Clastic Sedimentary Rock > Sandstone

Nearby scientific data

(1) -108.02732, 37.70834
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

Controls for ore emplacement

  • Brecciated Shale Adjacent To Barren Fissure

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic
Deposit size Small
Significant No
Year of last production 1926

Mining district

District name Pioneer (Rico) District

Land status

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

Ownership information

  • Type Operator
    Owner Rico Mining And Reduction Co.
    Home office Rico, Co.
    First year 1926
  • Type Owner
    Owner C. W. Rohde
    Home office Rico, Co.
    First year 1926

Production statistics

  • Year 1917
    Material ORE AG PB ACC
    Description Ap_Grade: ^5 Oz/Ton Ag, 18% Pb, 16% Zn, 1% Cu, 0.02 Oz/Ton Au
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Ore Zinc Zinc 16wt-pct
    Major Ore Gold Gold 1g/mt
    Ore Lead Lead 18wt-pct
    Major Ore Silver Silver 158g/mt
  • Year 1918
    Material ORE AG PB ACC
    Description Ap_Grade: ^14 Oz/Ton Ag, 25% Pb, 35% Zn
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Ore Zinc Zinc 35wt-pct
    Ore Lead Lead 0wt-pct
    Major Ore Silver Silver 443g/mt

Comments on the production information

  • PARTIAL PRODUCTION RECORD. FIGURES UNAVAILABLE FOR YEARS PRIOR TO 1917. NO PRODUCTION REPORTED IN 1919, APPARENTLY NONE IN 1920-1925. GRADE ONLY REPORTED FOR 1926, BUT PRODUCTION CONSIDERED SMALL. NO PRODUCTION REPORTED AFTER 1926.

Comments on the workings information

  • CDM INF, REPTS. DESCRIBE WORKINGS AS 1500-FT LILLIE D. CROSSCUT, WITH NORTH AND SOUTH DRIFTS ON VEIN AT 200 FT FROM PORTAL. CLAN CAMPBELLCROSSCUT DRIVEN GENERALLY NE FOR 300 FT WITH 45-FT RAISE TO LILLIE D. DRIFT AT 175 FT FROM PORTAL.

Reference information

Bibliographic references

  • Deposit

    MCKNIGHT,E.T., 1974, GEOLGY 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. 393-394.

  • Deposit

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

  • Deposit

    COLORADO DIV. MINES INF. REPTS. AND ANNUAL OPERATOR REPTS.

  • Deposit

    BLM MINERAL SURVEYS MS 1897, 2485, 8020

  • Production

    COLORADO DIV. MINES ANNUAL OPERATOR REPTS.

General comments

Subject category Comment text
Deposit GENERALLY SW-DIPPING LOWER HERMOSA FM SANDSTONE, SHALE, AND LIMESTONE COVERED BY EXTENSIVE LANDSLIDES BUT BELOW ARE CUT BY BLACKHAWK FAULT, DOWNTHROWN ON NE. BLANKET REPLACEMENT ORE CONSISTS OF SOLID PYRITE, CELLULAR QUARTZ, LIMONITE, AND STREAKS OF PARTLY OXIDIZED SPHALERITE AND GALENA. BLANKET OFFSET ABOUT 8 FT BY BARREN FISSURE TRENDING N 80 W, 85 NE, AND FILLED WITH CRUSHED ROCK, QUARTZ, AND GOUGE. LOWER BLANKET OVERLIES SANDSTONE AND IS OVERLAIN BY SHALE; UPPER BLANKET LIES IN BRECCIATED SHALE.

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.