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Missionary Tunnel

Past Producer in Rio Grande county in Colorado, United States with commodities Gold, Silver, Copper
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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. Alteration
  8. Host and associated rocks
  9. Nearby scientific data
  10. Geologic structures
  11. Controls for ore emplacement
  12. Economic information about the deposit and operations
  13. Mining district
  14. Land status
  15. Ownership information
  16. Workings at the site
  17. Links to other databases
  18. Bibliographic references
  19. General comments
  20. Reporter information

Geologic information

Identification information

Deposit ID 10014040
MRDS ID D010656
Record type Site
Current site name Missionary Tunnel
Alternate or previous names Claim: Missionary, Ms 124?

Geographic coordinates

Geographic coordinates: -106.59616, 37.42891 (WGS84)
Elevation 3469
Location accuracy 250(meters)
Relative position 0.2 MILES S 66 W FROM SUMMITVILLE

Site location context

Political divisions (FIPS codes)

Rio Grande(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 Rio Grande

Public Land Survey System information

Meridian Township Range Section Fraction State
New Mexico 037N 004E 30 NW Colorado

Comments on the location information

  • EXACT LOCATION UNCERTAIN BUT PROBABLY ALONG NE BASE OF SOUTH MTN. ELEV AND LAT-LONG GIVEN ARE FOR PROSPECT IN NE NW SEC. 30. ; INFO FROM LAND.ST :1975

Commodities

Commodity Importance
Gold Primary
Silver Primary
Copper Secondary

Alteration

  • (Local) Quartz-Alunite Solfataric Alteration

Host and associated rocks

  • Host or associated Associated
    Rock type Volcanic Rock (Aphanitic) > Felsic Volcanic Rock > Quartz Latite
    Rock unit name Quartz Latite Of South Mountain;Summitville Andesite
    Rock description Quartz Latite Of South Mountain;Summitville Andesite
    Stratigraphic age (youngest) Miocene
    Stratigraphic age (youngest) Miocene
  • Host or associated Associated
    Rock type Volcanic Rock (Aphanitic) > Intermediate Volcanic Rock > Andesite
  • Host or associated Host
    Rock type Volcanic Rock (Aphanitic) > Felsic Volcanic Rock > Quartz Latite
    Rock unit name Quartz Latite Of South Mountain;Summitville Andesite
    Rock description Quartz Latite Of South Mountain;Summitville Andesite

Nearby scientific data

(1) -106.59616, 37.42891
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, Summitville Fault, South Mountain Dome

Controls for ore emplacement

  • Quartz-Alunite Solfataric Replacement Bodies Following Nw-Trending Fractures Near Sw Margin Of South Mountain Feeder Conduit

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic
Deposit size Small
Significant No
Discovery year 1874
Discoverer Benjamin Burroughs

Mining district

District name Summit (Summitville) District

Land status

Ownership category Private

Ownership information

  • Type Operator
    Owner Asa Pangborn And Associates
    Home office Del Norte
    First year 1936
  • Type Owner
    Owner M. E. Benton
    Home office Peoria, Il.
    First year 1936

Workings at the site

  • Type of workings Underground
    Length 45.72M

Comments on the workings information

  • ONE TUNNEL

Reference information

Bibliographic references

General comments

Subject category Comment text
Deposit MISSIONARY VEIN OCCURS ALONG NE MARGIN OF STOCK AT NORTH BASE OF SOUTH MTN. IN CONTRAST TO STEEPLY DIPPING TO VERTICAL VEINS IN OTHER MINERALIZED AREAS OF DISTRICT, MISSIONARY VEIN IS FLAT LYING AND APPEARS TO FOLLOW CONTACT BETWEEN STOCK AND SUMMITVILLE ANDESITE. SURFACE EXPOSURE IS HIGHLY SILICIFIED KNOB FLANKED BY LOWER GROUND OF HIGHLY ARGILLIZED AND PYRITIZED ANDESITE (ON ALL SIDES BUT SW). DUMP SHOWED ABUNDANT PYRITE AND ENARGITE IN HOLES OF STRONGLY LEACHED, VUGGY QUARTZ ROCK. ORE REPORTEDLY WAS REFRACTORY AND REQUIRED ROASTING BEFORE MILLING.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-JUN-83 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.