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Snowstrom Mine

Past Producer in La Plata county in Colorado, United States with commodities Silver, Gold, Antimony, Arsenic
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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. Links to other databases
  16. Bibliographic references
  17. General comments
  18. Reporter information

Geologic information

Identification information

Deposit ID 10014189
MRDS ID D010855
Record type Site
Current site name Snowstrom Mine
Alternate or previous names Patented Claim: Martha, Ms 1721
Related records 10167011

Geographic coordinates

Geographic coordinates: -108.01204, 37.44223 (WGS84)
Elevation 3566
Relative position 13.3 MILES N 34 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

La Plata(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 037N 010W 30 NW Colorado

Comments on the location information

  • (LAND STATUS AND ADMINISTRATIVE AREA LOCATIONS CALCULATED USING GIS OVERLAY ANALYSIS FOR SAN JUAN N. F.). AT SE END OF CUMBERLAND BASIN ON NORTH SLOPE OF SNOWSTROM PEAK, 4.1 MILES NE OF LA PLATA TOWNSITE (UNSURVEYED SECTION). ; INFO FROM LAND.ST :1974

Commodities

Commodity Importance
Silver Primary
Gold Primary
Antimony Critical Tertiary
Arsenic Critical Tertiary

Comments on the commodity information

  • ORE MINERALS NOT OBSERVED BUT THOUGHT TO BE RUBY AG; MAY INCLUDE OTHER AG SULFOSALTS

Materials information

Materials Type of material
Gold Ore
Proustite Ore
Pyrargyrite Ore
Barite Gangue
Quartz Gangue

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
  • Host or associated Host
    Rock type Sedimentary Rock > Clastic Sedimentary Rock > Mudstone
  • 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

Nearby scientific data

(1) -108.01204, 37.44223
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 1878
Discoverer Snow Storm Mining And Milling Co. (Claimant)
Year of first production 1878
Year of last production 1888

Mining district

District name California (La Plata) District

Land status

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

Comments on the production information

  • PROBABLY ONLY VERY SMALL PRODUCTION FOR 1878-1883; NO PRODUCTION RECORDED FOR 1887 AND AFTER 1888.

Comments on the workings information

  • MINE DEVELOPED BY FOUR ADITS; UPPER TWO ADITS DRIVEN ON VEIN AND PROBABLY LESS THAN 100 FT LONG; THIRD TUNNEL DRIVEN 225 FT ON VEIN AND LOCATED 200 FT BELOW SECOND ADIT, WITH STOPING 50 TO 100 FT FROM PORTAL; FOURTH LEVEL (INACCESSIBLE) REPORTED TO BE 600 FT LONG, STARTING AS CROSSCUT; SEVERAL OPEN CUTS.

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. 73-74, 167-168.

  • Deposit

    BLM MINERAL SURVEY MS 1721

  • Production

    ECKEL AND OTHERS, 1949, P. 167 (AS COMPILED FROM PRIVATE ENGINEERING REPT. AND FROM REPT. OF DIRECTOR OF MINE)

General comments

Subject category Comment text
Deposit COUNTRY ROCK CONSISTS OF CUTLER AND DOLORES FM RED BEDS INTRUDED BY DIORITE-MONZONITE SILLS AND ONE LARGE DIKE AND TRAVERSED BY QUARTZ-BARITE VEIN TRENDING N 77 E AT ADIT OF THIRD LEVEL BUT CHANGING TO N 35 E, 75 NW, IN ARCUATE FASHION AND THOUGHT TO BE SW EXTENSION OF CUMBERLAND VEIN. ON RIDGE, VEIN IS 3-TO 5-FT-WIDE BLEACHED SHEAR ZONE CONSISTING OF QUARTZ AND LARGE IRREGULARLY BLADED BARITE. ON THIRD LEVEL. WEAK POORLY DEFINED VEIN ZONE TRAVERSES PORPHYRY DIKE WITH SOFT SHALE AND SANDSTONE WALLS.

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.