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  3. Mineral Resource Data System (MRDS)

Twins Mine

Past Producer in Saguache county in Colorado, United States with commodities Lead, Zinc
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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. Host and associated rocks
  9. Nearby scientific data
  10. Geologic structures
  11. Economic information about the deposit and operations
  12. Mining district
  13. Land status
  14. Links to other databases
  15. Bibliographic references
  16. General comments
  17. Reporter information

Geologic information

Identification information

Deposit ID 10012552
MRDS ID D008227
MAS/MILS ID 0081090209
Record type Site
Current site name Twins Mine
Alternate or previous names Twins Mines

Geographic coordinates

Point of reference Main Entrance
Geographic coordinates: -106.21504, 38.26862 (WGS84)
Elevation 3277
Location accuracy 100(meters)
Relative position 12.6 MILES N 18 W FROM SAGUACHE. Shaft on topo on west side of road about 1/2 mi. east of Phantom Creek.

Site location context

Political divisions (FIPS codes)

Saguache(county)

Colorado(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Bonanza(quadrangle 1:24,000 scale)

Saguache(quadrangle 1:100,000 scale)

Montrose(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Saguache(hydrologic unit)

Rio Grande Headwaters(hydrologic accounting unit)

Rio Grande Headwaters(hydrologic subregion)

Rio Grande(hydrologic region)

Federal lands

Rio Grande 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 Saguache

Public Land Survey System information

Meridian Township Range Section Fraction State
New Mexico 046N 007E 05 NW OF NE of SE Colorado

Comments on the location information

  • MINE OR CLAIM LIES ALONG UNNAMED TRIBUTARY OF TUTTLE CR. ONE MILE SW OF FLAGSTAFF MTN. ; INFO FROM LAND.ST :1976

Commodities

Commodity Importance
Lead Primary
Zinc Critical Primary

Materials information

Materials Type of material
Galena Ore
Sphalerite Ore

Host and associated rocks

  • Host or associated Associated
    Rock type Volcanic Rock (Aphanitic) > Felsic Volcanic Rock > Latite
    Stratigraphic age (youngest) Oligocene
    Stratigraphic age (youngest) Oligocene
  • Host or associated Associated
    Rock type Volcanic Rock (Aphanitic) > Intermediate Volcanic Rock > Andesite
    Rock unit name Rawley Andesite;Bonanza Tuff
    Rock description Rawley Andesite;Bonanza Tuff
  • Host or associated Host
    Rock type Volcanic Rock (Aphanitic) > Felsic Volcanic Rock > Latite
  • Host or associated Host
    Rock type Volcanic Rock (Aphanitic) > Intermediate Volcanic Rock > Andesite
    Rock unit name Rawley Andesite;Bonanza Tuff
    Rock description Rawley Andesite;Bonanza Tuff

Nearby scientific data

Main Entrance (1) -106.21504, 38.26862
ListMap

Economic information

Geologic structures

Type of structure Regional
Structure description Sawatch Range, San Juan Volcanic Field, Rio Grande Rift
Type of structure Local
Structure description Bonanza Caldera

Economic information about the deposit and operations

Operation type Underground
Development status Past Producer
Commodity type Metallic
Deposit size Small
Significant No

Mining district

District name Bonanza (Kerber Creek)

Land status

Ownership category Private

Comments on the workings information

  • ONE SHAFT OF UNKNOWN DEPTH

Reference information

Bibliographic references

  • Location

    BONANZA QUAD

  • Deposit

    PATTON, H.B., 1916, GEOLOGY AND ORE DEPOSITS OF THE BONANZA DISTRICT, SAGUACHE COUNTY, COLORADO: COLORADO GEOLOGICAL SURVEY BULL. 9, 136 P.

  • Deposit

    BURBANK, W.S., 1932, GEOLOGY AND ORE DEPOSITS OF THE BONANZA MINING DISTRICT, COLORADO: USGS PROF. PAPER 169, 166 P.

  • Deposit

    MARRS, R.W., 1973, APPLICATION OF REMOTE-SENSING TECHNIQUES TO THE GEOLOGY OF THE BONANZA VOLCANIC CENTER: COLORADO SCHOOL OF MINES PH.D. THESIS T-1531

  • Deposit

    BLM QUAD SW-11

General comments

Subject category Comment text
Deposit RAWLEY ANDESITE AND BONANZA TUFF IN FAULT CONTACT. CALDERA CONCENTRIC FAULT TRENDS N 20 TO 25 W.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-DEC-81 Schwochow, Stephen D. Colorado Geological Survey
Reporter 17-NOV-83 Intermountain Field Operations Center (IFOC) U.S. Bureau of Mines MAS 0081090209 = newMRDs 10239935
Editor 02-MAY-11 Wilson, Anna B. U.S. Geological Survey MAS 0081090209 = newMRDs 10239935, merged and deleted

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.