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  3. Mineral Resource Data System (MRDS)

M and W Group

Occurrence in Saguache county in Colorado, United States with commodities Uranium, Thorium
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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. Host and associated rocks
  10. Nearby scientific data
  11. Geologic structures
  12. Controls for ore emplacement
  13. Economic information about the deposit and operations
  14. Mining district
  15. Land status
  16. Ownership information
  17. Links to other databases
  18. Bibliographic references
  19. General comments
  20. Reporter information

Geologic information

Identification information

Deposit ID 10094530
MRDS ID D009099
Record type Site
Current site name M and W Group
Related records 10167423

Geographic coordinates

Geographic coordinates: -106.77062, 38.31361 (WGS84)
Elevation 2758
Relative position 18 MILES S27E FROM GUNNISON

Site location context

Political divisions (FIPS codes)

Saguache(county)

Colorado(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Sawtooth Mountain(quadrangle 1:24,000 scale)

Saguache(quadrangle 1:100,000 scale)

Montrose(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Tomichi(hydrologic unit)

Gunnison(hydrologic accounting unit)

Gunnison(hydrologic subregion)

Upper Colorado(hydrologic region)

Federal lands

Bureau of Land Management(Bureau of Land Management CO)

Bureau of Land Management CO BLM(Type of land area)

BLM(Federal land areas administered by BLM)

Geographic areas

Country State County
United States Colorado Saguache

Public Land Survey System information

Meridian Township Range Section Fraction State
New Mexico 047N 002E 20 SE Colorado

Comments on the location information

  • WEST OF COCHETOPA CREEK ; INFO FROM LAND.ST :1976

Commodities

Commodity Importance
Uranium Primary
Thorium Primary

Materials information

Materials Type of material
Fluorite Gangue

Alteration

  • (Local) Hematite Staining

Analytical data

Result 0.15 MR/HR MAX RADIATION COUNT OVER SHEAR ZONE
Result BACKGROUND 0.015 TO 0.025 MR/HR

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock > Granitoid > Quartz Monzonite
    Rock unit name Quartz Monzonite
    Rock description Quartz Monzonite
    Stratigraphic age (youngest) Neoproterozoic
    Stratigraphic age (youngest) Neoproterozoic
    Stratigraphic age (youngest) Neoproterozoic
  • Host or associated Host
    Rock type Plutonic Rock > Granitoid > Quartz Monzonite
    Rock unit name Quartz Monzonite Of Cochetopa Creek;Junction Creek Sandstone
    Rock description Quartz Monzonite Of Cochetopa Creek;Junction Creek Sandstone

Nearby scientific data

(1) -106.77062, 38.31361
ListMap

Economic information

Geologic structures

Type of structure Regional
Structure description San Juan Volcanic Field; Gunnison Uplift
Type of structure Local
Structure description Cochetopa Dome; Los Ochos Fault; Razor Creek Dome; Unnamed Fault

Controls for ore emplacement

  • Silicification, Fracturing, Brecciation Of Sedimentary Rocks Along Los Ochos And Related Faults

Economic information about the deposit and operations

Development status Occurrence
Commodity type Metallic
Deposit size Small
Significant No

Mining district

District name Cochetopa (Cochetopa Creek) District

Land status

Ownership category BLM Administrative Area

Ownership information

  • Type Owner
    Owner Lee Welch And Bud Milner
    Home office Gunnison, Co.
    First year 1955

Comments on development

  • DISTRICT MINED PREVIOUSLY FOR AU AND BASE METALS. GUNNISON MINING CO. DISCOVERED URANIUM IN 1954 ALONG LOS OCHOS FAULT.

Reference information

General comments

Subject category Comment text
Deposit SHEAR ZONE IS NEARLY VERTICAL AND TRENDS N55W

Reporter information

Type Date Name Affiliation Comment
Reporter 01-JUN-1982 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.