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Florence W. Mine

Past Producer in Montezuma county in Colorado, United States with commodities Gold, Silver, Copper, Lead, 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. Ore body information
  13. Economic information about the deposit and operations
  14. Mining district
  15. Land status
  16. Ownership information
  17. Workings at the site
  18. Links to other databases
  19. Bibliographic references
  20. General comments
  21. Reporter information

Geologic information

Identification information

Deposit ID 10087914
MRDS ID D010821
Record type Site
Current site name Florence W. Mine
Alternate or previous names Patented Claims: Gold Dollar, MS 19232, Last Chance, MS 193232, Silver Mug, MS 19232, Last Dollar, Ms

Geographic coordinates

Geographic coordinates: -108.13121, 37.39362 (WGS84)
Elevation 3060
Relative position 15.9 MILES N 61 W FROM DURANGO

Site location context

Political divisions (FIPS codes)

Montezuma(county)

Colorado(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Rampart Hills(quadrangle 1:24,000 scale)

Cortez(quadrangle 1:100,000 scale)

Cortez(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Mancos(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 Montezuma

Public Land Survey System information

Meridian Township Range Section Fraction State
New Mexico 036N 012W 12 NW Colorado

Comments on the location information

  • (LAND STATUS AND ADMINISTRATIVE AREA LOCATIONS CALCULATED USING GIS OVERLAY ANALYSIS FOR SAN JUAN N. F.). ON UNNAMED TRIBUTARY NORTH OF EAST MANCOS RIVER ABOUT 0.7 MILE ABOVE GOLD RUN CREEK CONFLUENCE, 3.7 MILES WSW OF LA PLATA TOWNSITE. ; INFO FROM LAND.ST :1974

Commodities

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

Materials information

Materials Type of material
Bornite Ore
Chalcopyrite Ore
Gold Ore
Tetrahedrite Ore
Ankerite Gangue
Barite Gangue
Quartz Gangue

Analytical data

Result SHIPPING ORE CONTAINED 0.8 TO 1.7 OZ/TON AU AND 1.0 TO 7.5 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 Jurassic
  • 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 Junction Creek Sandstone;Entrada Sandstone
    Rock description Junction Creek Sandstone;Entrada Sandstone

Nearby scientific data

(1) -108.13121, 37.39362
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

Ore body information

  • Thickness 1.52M

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic
Deposit size Small
Significant No
Discovery year 1914
Discoverer Florence W. Gold Mines Co. (Claimant)
Year of first production 1914
Year of last production 1958

Mining district

District name California (La Plata) District

Land status

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

Ownership information

  • Type Operator
    Owner Minerals Consolidate, Inc.
    Home office Salt Lake City, Ut.
    First year 1958
  • Type Owner
    Owner First National Oil And Minerals Co.
    Home office Pueblo, Co.
    First year 1958

Comments on the production information

  • PROBABLE COMPLETE PRODUCTION RECORD. CLAIMS SURVEYED IN 1914 (FIRST YEAR OF PRODUCTION) AND NO PRODUCTION WAS REPORTED AFTER 1958.

Workings at the site

  • Type of workings Underground
    Length 207.26M

Comments on the workings information

  • LOWER ADIT DRIVEN N 18 W FOR 230 FT TO VEIN, THENCE WEST FOR 75 FT ALONG VEIN, WITH 100-FT RAISE AT 10 FT ALONG DRIFT. UPPER ADIT APPROX 100 FT ABOVE LOWER ADIT, DRIVEN N 10 W FOR 65 FT TO VEIN, THENCE WEST FOR 150 FT ON VEIN AND EAST FOR 60 VEIN ON VEIN; UNDERHAND STOPE ON EAST DRIFT.

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, 119-120.

  • Deposit

    BLM MINERAL SURVEY MS 19232

  • Deposit

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

  • Production

    ECKEL AND OTHERS, 1949, P. 119 (AS COMPILED FROM USGS AND USBM RECORDS); COLO. DIV. MINES ANN. OPERATOR REPTS. (1957-1958)

General comments

Subject category Comment text
Deposit COUNTRY ROCK CONSISTS OF WEST- TO WSW-DIPPING JURASSIC CLASTICS. VEIN STRIKES EAST-WEST, DIPS 53 TO 64 N, AND FOLLOWS NORMAL FAULT THAT COULD BE A WESTWARD SUBSIDIARY FRACTURE RELATED TO EAST-WEST-TRENDING PARROTT FAULT SYSTEM. VEIN ZONE CONTAINS 2.5 TO 5 FT OF BRECCIATED ROCK AND GOUGE WITH 6 INCHES TO 3 FT OF VEIN MATERIAL FORMED PARTLY BY BRECCIA REPLACEMENT AND PARTLY BY OPEN-SPACE FILLING; CONSISTS OF COARSE INTERGROWTH OF QUARTZ, BARITE, AND ANKERITE, WITH PYRITE AND CU SULFIDES.

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.

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.