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Apex Tunnel

Occurrence in Conejos county in Colorado, United States with commodity 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. 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 10087895
MRDS ID D010636
Record type Site
Current site name Apex Tunnel
Alternate or previous names Watrous Claims

Geographic coordinates

Geographic coordinates: -106.53338, 37.39363 (WGS84)
Elevation 2941
Location accuracy 500(meters)
Relative position 4.1 MILES S 55 E FROM SUMMITVILLE

Site location context

Political divisions (FIPS codes)

Conejos(county)

Colorado(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Summitville(quadrangle 1:24,000 scale)

Antonito(quadrangle 1:100,000 scale)

Durango(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Alamosa-Trinchera(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 Conejos

Public Land Survey System information

Meridian Township Range Section Fraction State
New Mexico 036N 004E 03 NE Colorado

Comments on the location information

  • EXACT LOCATION UNCERTAIN BUT ESTIMATED FROM PATTON'S DESCRIPTION TO BE SOUTH OF ALAMOSA RIVER NEAR MOUTH OF ACME GULCH, 3.25 MILES ENE OF LOOKOUT MTN. ; INFO FROM LAND.ST :1975

Commodities

Commodity Importance
Antimony Critical Primary

Materials information

Materials Type of material
Stibnite Ore
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 Volcanic Rock (Aphanitic) > Intermediate Volcanic Rock > Andesite
    Rock unit name Summitville Andesite;Intrusive Rocks--Monzonite (Alamosa River Stock)
    Rock description Summitville Andesite;Intrusive Rocks--Monzonite (Alamosa River Stock)
    Stratigraphic age (youngest) Oligocene
    Stratigraphic age (youngest) Oligocene
  • Host or associated Host
    Rock type Volcanic Rock (Aphanitic) > Intermediate Volcanic Rock > Andesite
    Rock unit name Summitville Andesite;Intrusive Rocks--Monzonite (Alamosa River Stock)
    Rock description Summitville Andesite;Intrusive Rocks--Monzonite (Alamosa River Stock)

Nearby scientific data

(1) -106.53338, 37.39363
ListMap

Economic information

Geologic structures

Type of structure Regional
Structure description San Juan Volcanic Field
Type of structure Local
Structure description Platoro Caldera, Summitville Caldera, Alamosa River Stock, Cornwall Fault

Economic information about the deposit and operations

Development status Occurrence
Commodity type Metallic
Deposit size Small
Significant No

Mining district

District name Decatur West (Stunner) District

Land status

Ownership category National Forest

Comments on the workings information

  • 150-FT TUNNEL DRIVEN GENERALLY SOUTH OF SE

Reference information

Bibliographic references

  • Deposit

    PATTON, H.B., 1917, GEOLOGY AND ORE DEPOSITS OF THE PLATORO-SUMMITVILLE MINING DISTRICT, COLORADO: CGS BULL. 13.

  • Deposit

    LIPMAN, P.W., 1974, GEOLOGIC MAP OF THE PLATORO CALDERA AREA, SOUTHEASTERN SAN JUAN MOUNTAINS, SOUTHWESTERN COLORADO: USGS MAP I-828.

General comments

Subject category Comment text
Deposit QUARTZ VEIN TRENDS ABOUT N 35 W ALONG LOWER REACH OF ACME GULCH IN SUMMITVILLE ANDESITE ALONG SOUTH MARGIN OF SUMMITVILLE CALDERA AGAINST CORNWALL RING FAULT THAT TRUNCATES CORNWALL RESURGENT BLOCK WITHIN PLATORO CALDERA TO SOUTH. TUNNEL DRIVEN INTO HILLSIDE TO INTERSECT VEIN. OTHER MINERALIZATION NOT REPORTED, BUT STIBNITE CRYSTALS SUPPOSEDLY WERE REMOVED.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-JUN-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.