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Oregon Mine

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

Geologic information

Identification information

Deposit ID 10012415
MRDS ID D008029
Record type Site
Current site name Oregon Mine
Related records 10119354

Geographic coordinates

Geographic coordinates: -106.1356, 38.29807 (WGS84)
Elevation 3076
Relative position 11.9 MILES N 06 E FROM SAGUACHE

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)

San Luis(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 008E 05 NW OF NW OF NW Colorado

Comments on the location information

  • S-T-R, LAT-LONG, AND ELEV. TAKEN FROM BURBANK'S (1932) PLATE 1 (SCALE 1:12000). MINE OR CLAIM LIES NEAR HEAD OF EAGLE GULCH ON WEST SLOPE OF HAYDEN PEAK ; INFO FROM LAND.ST :(1976)

Commodities

Commodity Importance
Manganese Critical Primary
Silver Primary
Gold Primary
Lead Secondary
Zinc Critical Secondary

Materials information

Materials Type of material
Psilomelane Ore
Wad Ore
Barite Gangue
Fluorite Gangue
Pyrite Gangue
Quartz Gangue
Rhodochrosite Gangue

Alteration

  • (Local) Early Barren Stage Of Alteration By Fumarolic Or Acid-Hot Spring Activity Resulted In Intense Silicification, Wallrock Replacement By Jasper And Alteration Products Hematite, Diaspore, Alunite, Barite, Zunyite, Rutile, And Kaolin Minerals. Later Mineralizing Stage By Alkaline Or Neutral Solutions Deposited Ore And Gangue And Caused Micaceous Alteration (Sericite And Chlorite) And Calcite, Quartz, And Pyrite.

Analytical data

Result PATTON REPORTED DUMP SAMPLE ASSAY OF 0.02 OZ/TON AU, 1.44 OZ/TON AG, 9.8 % MN. SAMPLES FROM VEIN IN TUNNEL ASSAYED AS FOLLOWS (EACH SET OF VALUES IS OZ/TON AG AND % MN, RESPECTIVELY): 1.20, 8.0
Result 1.32, 13.8
Result 1.48, 10.3. BURBANK REPORTS ASSAYS OF 0.005 TO 0.02 OZ/TON AU, 0.3 TO 3 OZ/TON AG. AVERAGE VEIN SAMPLE FROM OREGON VEIN ASSAYED 3.2 % MN, 0.15 % PB, TRACE ZN, 0.3 OZ/TON AG, 0.005 OZ/TON AU. MASSIVE STREAKS IN 2- TO 8-FT-WIDE VEINS ASSAYED 0.005 OZ/TON AU, 1.1 OZ/TON AG, 0.09 % PB, 0.13 % ZN, 10.2 % MN, 1.03 % S, 3.1 % CAO, 3 % FE. VEIN SAMPLE FROM SHAFT ASSAYED 19.1 % MN, 10.1 % FE, 3.2 OZ/TON AG, 0.01 OZ/TON AU.

Host and associated rocks

  • Host or associated Associated
    Rock type Volcanic Rock (Aphanitic) > Felsic Volcanic Rock > Quartz Latite
    Stratigraphic age (youngest) Oligocene
    Stratigraphic age (youngest) Oligocene
  • Host or associated Associated
    Rock type Volcanic Rock (Aphanitic) > Felsic Volcanic Rock > Latite
    Rock unit name Squirrel Gulch Latite;Eagle Gulch Latite
    Rock description Squirrel Gulch Latite;Eagle Gulch Latite
  • Host or associated Host
    Rock type Volcanic Rock (Aphanitic) > Felsic Volcanic Rock > Quartz Latite
  • Host or associated Host
    Rock type Volcanic Rock (Aphanitic) > Felsic Volcanic Rock > Latite
    Rock unit name Squirrel Gulch Latite;Eagle Gulch Latite
    Rock description Squirrel Gulch Latite;Eagle Gulch Latite

Nearby scientific data

(1) -106.1356, 38.29807
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, Bonanza Manganese Belt

Ore body information

  • Strike N55W
    Dip 70 TO 90 NE
    Thickness 19.81M

Controls for ore emplacement

  • See Comments

Economic information about the deposit and operations

Development status Occurrence
Commodity type Metallic
Deposit size Small
Significant No

Mining district

District name Bonanza (Kerber Creek) District

Land status

Ownership category National Forest

Ownership information

  • Type Operator
    Owner Solar Mining Co.
    Home office Salida, Co.
    First year 1959

Workings at the site

  • Type of workings Unknown
    Length 268.22M
    Overall depth 59.44M
    Overall length 170.69M
    Overall width 73.15M

Comments on the workings information

  • MAIN TUNNEL DRIVEN 560 FT AT N33E. OREGON VEIN AND DRIFT DEVELOPED AT 240 FT INTO TUNNEL WITH 80 FT OF DRIFT TO NW, 240 FT TO SE. NEAR END OF SE BRANCH, SHAFT SUNK FROM SURFACE TO 100 FT BELOW LEVEL.

Comments on development

  • WORKINGS WERE TOO SHALLOW AND INSUFFICIENT TO CONCLUSIVELY PROVE OUT COMMERCIAL ORE

Reference information

Bibliographic references

  • 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.

General comments

Subject category Comment text
Deposit OREGON VEIN (ATTITUDE GIVEN ABOVE) OCCUPIES FISSURED ZONE 60 TO 65 FT WIDE, BUT MINERALIZATION CONTAINED IN PARALLEL VEINS UP TO 5 FT WIDE.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-NOV-1981 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.