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Manganese Tunnel

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

Geologic information

Identification information

Deposit ID 10013126
MRDS ID D009235
Record type Site
Current site name Manganese Tunnel

Geographic coordinates

Geographic coordinates: -106.97312, 38.01529 (WGS84)
Elevation 3158
Relative position 11.4 MILES N13W FROM CREEDE

Site location context

Political divisions (FIPS codes)

Saguache(county)

Colorado(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Stewart Peak(quadrangle 1:24,000 scale)

Saguache(quadrangle 1:100,000 scale)

Montrose(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Upper Gunnison(hydrologic unit)

Gunnison(hydrologic accounting unit)

Gunnison(hydrologic subregion)

Upper Colorado(hydrologic region)

Federal lands

Grand Mesa, Uncompahgre and Gunnison National Forests(National Forest)

National Forest FS(Type of land area)

FS(Federal land areas administered by FS)

La Garita Wilderness(Wilderness)

Wilderness 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 044N 001W 34 SW Colorado

Comments on the location information

  • ELEVATIONS APPROXIMATED FROM STEVEN AND BIENIEWSKI'S MAPS. PROSPECT LIES ABOVE AND EAST OF SPRING CR NW OF WOODMANSEE MINE IN UNSURVEYED SECTION ; INFO FROM LAND.ST :1976

Commodities

Commodity Importance
Silver Primary
Manganese Critical Primary
Gold Primary

Analytical data

Result STEVEN AND BIENIEWSKI RAN SEMIQUANTITATIVE SPECTROGRAPHIC ANALYSES ON GRAB AND CHIP CAMPLES FROM VARIOUS DUMPS IN MINE AREA. EACH SET OF VALUES IS SAMPLE NUMBER, % FE, % MG, % CA, % TI, PPM MN, PPM AG, PPM BA,, PPM CO, PPM CR, PPM CU, PPM MO, PPM NI, PPM PB, PPM SR, PPM V, PPM ZN, PPM ZR, AND VARIOUS FIRE ASSAYS FOR BASE AND PRECIOUS AND OTHER METALS (LT=LESS THAN, TR=TRACE): NO.61, 5, 0.2, 0.2, 0.3, GT 5000, 100, 2000, 10, 15, 70, 30, 5, 200, 500, 100, 500, 100, TR AU, 2.80 OZ/TON AG, 3.50% MN
Result NO. 62, 7, 0.5, 0.1, 0.2, GT 5000, 30, 1000, 10, 20, 30, 15, 5, 500, 200, 70, LT 200, 200, TR AU, 0.70 OZ/TON AG, 0.90% MN
Result NO. 63, 2, 0.2, 0.07, 0.1, 5000, 150, 700, LT 5, 15, 30, 10, 5, 200, LT 100, 10, LT 200, 100, 0.005 OZ/TON AU, 0.30 OZ/TON AG
Result NO. 64, 2, 0.3, 0.05, 0.1, GT 5000, 300, GT 5000, LT 5, 20, 50, 20, 5, 300, 100, 20, 700, 100, 0.005 OZ/TON AU, 0.80 OZ/TON AG, 0.61% BA, 0.90% MN. NO. 61 IS CHIP SAMPLE FROM VEIN AT FACE, NO. 62 IS DUMP SAMPLE
Result NOS. 63 AND 64 ARE CHIP SAMPLES FROM VEIN EXPOSED IN PROSPECT CUT ABOVE TUNNEL

Host and associated rocks

  • Host or associated Associated
    Rock type Volcanic Rock (Aphanitic) > Felsic Volcanic Rock > Rhyolite
    Rock unit name Rhyolite Flow
    Rock description Rhyolite Flow
    Stratigraphic age (youngest) Oligocene
    Stratigraphic age (youngest) Oligocene
    Stratigraphic age (youngest) Oligocene
    Stratigraphic age (youngest) Oligocene
  • Host or associated Host
    Rock type Volcanic Rock (Aphanitic) > Felsic Volcanic Rock > Rhyolite
    Rock unit name Rhyolite Flow
    Rock description Rhyolite Flow

Nearby scientific data

(1) -106.97312, 38.01529
ListMap

Economic information

Geologic structures

Type of structure Regional
Structure description San Juan Volcanic Field, La Garita Caldera
Type of structure Local
Structure description La Garita Calder, San Luis Caldera

Economic information about the deposit and operations

Development status Occurrence
Commodity type Metallic
Deposit size Small
Significant No

Mining district

District name Bondholder District

Land status

Ownership category National Forest

Comments on the workings information

  • 30-FT TUNNEL

Reference information

Bibliographic references

  • Deposit

    STEVEN, T.A., AND BIENIEWSKI, C.L., 1977, MINERAL RESOURCES OF THE LA GARITA WILDERNESS, SAN JUAN MOUNTAINS, SOUTHWESTERN COLORADO: USGS BULL. 1420, ANALYSES 61, 62, 63, AND 64

General comments

Subject category Comment text
Deposit IRREGULARLY SILICIFIED VEINS CONTAIN ERRATIC LOW-GRADE QUARTZ-PYRITE OR QUARTZ-SULFIDE MINERALIZATION. NO PERSISTENT MINERALIZING STRUCTURAL ZONE.

Reporter information

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