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Hugh Bly Mine

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. Workings at the site
  16. Links to other databases
  17. Bibliographic references
  18. General comments
  19. Reporter information

Geologic information

Identification information

Deposit ID 10014037
MRDS ID D010652
Record type Site
Current site name Hugh Bly Mine

Geographic coordinates

Geographic coordinates: -106.59671, 37.41863 (WGS84)
Elevation 3675
Relative position 0.8 MILES S 13 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 SE OF SW Colorado

Comments on the location information

  • ON EAST NOSE OF SOUTH MTN 650 FT SW OF IOWA PORTAL. PORTAL ELEV FROM STEVEN AND RATTE (1960, PL.4). ; 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) -106.59671, 37.41863
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 Mounain 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

Mining district

District name Summit (Summitville) District

Land status

Ownership category Private

Workings at the site

  • Type of workings Surface/Underground
    Length 143.26M

Comments on the workings information

  • CROSSCUT TUNNEL DRIVEN S 75 W FOR 350 FT WITH 60FT OF DRIFT ON SOUTH TEWSKBURY VEIN AT 80 FT FROM PORTAL; PROBABLY CONNECTED TO SURFACE, TO IOWA LEVEL, AND TO S.T.T. SUBLEVEL VIA SHAFT AT SOUTH END OF TEWKSBURY GLORY HOLE (SOUTH TEWKSBURY STOPE).

Reference information

Bibliographic references

  • Deposit

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

  • Deposit

    STEVEN, T.A., AND RATTE, J.C., 1960 GEOLOGY AND ORE DEPOSITS OF THE SUMMITVILLE DISTRICT, SAN JUAN MOUNTAINS, COLORADO: USGS MAP I-828.

  • 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 SOUTH TEWKSBURY VEIN ZONE TRENDS N 30 W. MINE DEVELOPED AT SOUTH END IN LARGE MASS OF HIGHLY SILICIFIED ROCK (VUGGY QUARTZ ROCK OF QUARTZ-ALUNITE ZONE)

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.