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Lady Eleanora Mine

Past Producer in La Plata county in Colorado, United States with commodities Gold, Silver, Copper, Lead, Zinc, Antimony
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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. Mineral occurrence model information
  9. Host and associated rocks
  10. Nearby scientific data
  11. Geologic structures
  12. Economic information about the deposit and operations
  13. Mining district
  14. Land status
  15. Ownership information
  16. Links to other databases
  17. Bibliographic references
  18. General comments
  19. Reporter information

Geologic information

Identification information

Deposit ID 10014173
MRDS ID D010831
Record type Site
Current site name Lady Eleanora Mine
Alternate or previous names Little La Plata Mine, Patented Claims: Little La Plata, MS 1374a, Little La Plata Mill Site, MS 1374b, Red Cloud, MS 1375, Unpatented Claims: Lady Eleanora, Henrietta, Butterfly, Florence C.
Related records 10239394

Geographic coordinates

Geographic coordinates: -108.07648, 37.36307 (WGS84)
Elevation 2682
Relative position 12.25 MILES N 63 W FROM DURANGO

Site location context

Political divisions (FIPS codes)

La Plata(county)

Colorado(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Hesperus(quadrangle 1:24,000 scale)

Cortez(quadrangle 1:100,000 scale)

Cortez(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Middle San Juan(hydrologic unit)

Upper San Juan(hydrologic accounting unit)

San Juan(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 La Plata

Public Land Survey System information

Meridian Township Range Section Fraction State
New Mexico 036N 011W 21 N2 Colorado

Comments on the location information

  • (LAND STATUS AND ADMINISTRATIVE AREA LOCATIONS CALCULATED USING GIS OVERLAY ANALYSIS FOR SAN JUAN N. F.). ON EAST SIDE OF LA PLATA RIVER BETWEEN SNOWSLIDE GULCH AND BAY CITY GULCH AT WEST BASE OF OHWILER RIDGE, 2.6 MILES SSW OF LA PLATA TOWNSITE (UNSURVEYED SECTION). ; INFO FROM LAND.ST :1974

Commodities

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

Materials information

Materials Type of material
Chalcopyrite Ore
Galena Ore
Gold Ore
Pyrite Ore
Sphalerite Ore
Tetrahedrite Ore
Epidote Gangue
Quartz Gangue
Siderite Gangue

Analytical data

Result RITTER'S (1930) ASSAYS FROM IDAHO VEIN: SAMPLE 1, 1.38 OZ/TON AU AND 72.6 OZ/TON AG
Result SAMPLE 2, 0.04 OZ/TON AU, 18.6 OZ/TON AG, AND 17.2% CU. SAMPLE FROM 3-FT VEIN IN 15-FT SHAFT ON RED CLOUD CLAIM ASSAYED 0.12 OZ/TON AU AND 155.9 OZ/TON AG. FROM LA PLATA VEIN, FOUR SAMPLES FROM OPEN CUT: SAMPLE 1, 3.9 OZ/TON AU, 14.7 OZ/TON AG, 3.64% PB
Result SAMPLE 2, 4.2 OZ/TON AU, 50 OZ/TON AG, 3.4% CU
Result SAMPLE 3, 1.8 OZ/TON AU, 8.6 OZ/TON AG, 9.2% CU
Result SAMPLE 4, 2.88 OZ/TON AU, 10.1 OZ/TON AG, 6.5% CU. MIXED ORE SMELTER ASSAY: 5.3 OZ/TON AU, 1.3 OZ/TON AG, 0.6% PB, 5.7% CU, 0.6% ZN. ORE FROM JUNCTION OF LITTLE LA PLATA AND IDAHO VEINS: SAMPLE 1, 2.8 OZ/TON AU, 3.2 OZ/TON AG, 14.3% CU
Result SAMPLE 2, 0.08 OZ/TON AU, 148 OZ/TON AG. OTHER SURFACE ORE: 10.06 OZ/TON AU, 9.8 OZ/TON AG, 4.48% CU
Result 1.10 OZ/TON AU, 10.1 OZ/TON AG. LITTLE LA PLATA VEIN ASSAYS FROM RAISE: SAMPLE 1 (NORTH END). 0.2 OZ/TON AU AND 51.4 OZ/TON AG
Result SAMPLE 2 (ROOF), 0.16 OZ/TON AU AND 53.3 OZ/TON AG
Result SAMPLE 3 (SOUTH END), 0.07 TO 2.1 OZ/TON AU AND 1.5 TO 170.3 OZ/TON AG.

Mineral occurrence model information

Model code 85
USGS model code 22c
Deposit model name Polymetallic veins
Mark3 model number 46

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock > Mafic Intrusive Rock > Diorite
    Rock unit name Porphyritic Rocks--Diorite-Monzonite Porphyry
    Rock description Porphyritic Rocks--Diorite-Monzonite Porphyry
    Stratigraphic age (youngest) Paleocene
    Stratigraphic age (youngest) Paleocene
    Stratigraphic age (youngest) Late Triassic
    Stratigraphic age (youngest) Late Triassic
  • 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 Dolores Formation
    Rock description Dolores Formation

Nearby scientific data

(1) -108.07648, 37.36307
ListMap

Economic information

Geologic structures

Type of structure Regional
Structure description San Juan Uplift, Four Corners Platform
Type of structure Local
Structure description La Plata Dome

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic
Deposit size Small
Significant No
Discovery year 1882
Discoverer Christian Wahl (Claimant)
Year of first production 1885
Year of last production 1923

Mining district

District name California (La Plata) District

Land status

Ownership category Private
Area name San Juan N. F.

Ownership information

  • Type Owner-Operator
    Owner Kel-Sco Industries
    Home office Hesperus, Co.
    First year 1965

Comments on the production information

  • PARTIAL PRODUCTION RECORD. FIGURES UNAVAILABLE FOR YEARS PRIOR TO 1906, BUT PRODUCTION CONSIDERED SMALL.

Comments on the workings information

  • PRINCIPAL WORKINGS ARE CROSSCUT TUNNEL DRIVEN S 60 E FOR 320 FT, THENCE S 75 E FOR 150 FT. AT 180 FT FROM PORTAL, 185-FT RAISE DRIVEN ON LITTLE LA PLATA VEIN TO UPPER LEVEL WHICH IS 425-FT DRIFT DRIVEN N 23 E, WITH 10-FT RAISE AT 285 FT. AT 70 FT IN FIRST RAISE IS 500-FT CROSSCUT DRIVEN EAST TO IDAHO VEIN, WITH 100-FT RAISE ON VEIN AT 430 FT. ALSO FROM 185-FT RAISE IS INTERMEDIATE LEVEL DRIVEN NE ON LITTLE LA PLATA VEIN FOR 70 FT. OTHER WORKINGS INCLUDE SHORT CROSSCUT AND DRIFT TUNNELS, SHAFTS, AND OPEN CUTS.

Comments on development

  • PROPERTY ORIGINALLY OPERATED BY LADY ELEANORA CONSOLIDATED GOLD MINES CO. EARLY ORE PRODUCED FROM SURFACE AND SHALLOW WORKINGS. INTERMITTENT PRODUCTION FROM 1906-1923. SMALL FLOTATION CONCENTRATION MILL BUILT IN 1936 PRODUCED SMALL AMOUNT OF CONCENTRATES.

Reference information

Bibliographic references

  • Deposit

    ECKEL, E.B., AND OTHERS, 1949, GEOLOGY AND ORE DEPOSITS OF THE LA PLATA DISTRICT, COLORADO: USGS PROF. PAPER 219, P. 69-70, 134-135.

  • Deposit

    RITTER, E.A., 1930, REPORT ON THE LADY ELEANORA CONSOLIDATED GOLD MINES COMPANY, LA PLATA, COLORADO: UNPUB. ENG. REPT., 8 P.

  • Deposit

    COLORADO DIV. MINES INF. REPTS.

  • Deposit

    BLM MINERAL SURVEYS MS 1374A&B, 1375

  • Production

    ECKEL AND OTHERS, 1949, P. 134 (AS COMPILED FROM USGS AND USBM RECORDS)

General comments

Subject category Comment text
Deposit COUNTRY ROCK CONSISTS OF SW-DIPPING DOLORES FM RED BEDS INTRUDED BY DIORITE-MONZONITE PORPHYRY DIKES. IN LOWER WORKINGS, SANDSTONE AND SHALE ARE SILICIFIED, AND LIMESTONE CONGLOMERATE IS METAMORPHOSED. IDAHO AND VALLEY VIEW VEINS BELIEVED TO BE EXTENSIONS FROM THOSE NAMED PROPERTIES AND TREND NNW; IDAHO VEIN DIPS STEEPLY NE TO VERTICAL, 0.5 TO 3.5 FT WIDE, AND CONSISTS OF OPEN BRECCIA IN PLACES CONTAINING QUARTZ AND SULFIDES. LITTLE LA PLATA VEIN TRENDS GENERALLY N 22 TO 25 E, 65 TO 80 NW AND LIES IN 1- TO 5-FT-WIDE FRACTURE ZONE CONTAINING 3 INCHES TO 3 FT OF QUARTZ, SIDERITE, AND SULFIDES.
Deposit Discovery Year: EARLY 1880S

Reporter information

Type Date Name Affiliation Comment
Reporter 01-AUG-1983 Schwochow, Stephen D. 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.