1. Mineral Resources
  2. Online Spatial Data
  3. Mineral Resource Data System (MRDS)

Shawmut Mine

Past Producer in Saguache county in Colorado, United States with commodities Silver, Gold, Lead, Zinc, Copper
Map
XML
JSON
KML
B
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. Host and associated rocks
  9. Nearby scientific data
  10. Ore body information
  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 10097820
MRDS ID D008241
Record type Site
Current site name Shawmut Mine
Related records 10191367

Geographic coordinates

Geographic coordinates: -106.1281, 38.3389 (WGS84)
Elevation 3605
Relative position 17.1 MILES N03E 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 047N 008E 07 SW OF NM OF SE 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 ON SOUTH SLOPE OF ROUND MTN ; INFO FROM LAND.ST :(1976)

Commodities

Commodity Importance
Silver Tertiary
Gold Tertiary
Lead Tertiary
Zinc Critical Tertiary
Copper Tertiary

Materials information

Materials Type of material
Chalcopyrite Ore
Galena Ore
Pyrite Ore
Sphalerite Ore
Quartz Gangue

Analytical data

Result ORE SHIPMENTS IN 1911 AND 1917 CONTAINED AVERAGE 1% PB, 2% CU, 16 OZ/TON AG, AND 0.07 /I/TON AU. ASSAYS FROM VARIOUS LEVELS: 165 LEVEL, TR TO 0.08 /Z TON AU, TR TO 14.62 OZ/TON AG
Result RAISE BETW. 165 AND 215 LEVELS, TR TO 0.24 OZ/TON AU, TR TO 50.26 OZ/TON AG
Result 215 LEVEL, TR TO 0.24 OZ/TON AV, 0.4 TO 18.6 OZ/TON AG
Result 280 LEVEL, TR TO 3.0 OZ/TO N AU, TR TO 4.74 OZ/TON AG.

Host and associated rocks

  • Host or associated Associated
    Rock type Volcanic Rock (Aphanitic) > Felsic Volcanic Rock > Latite
    Stratigraphic age (youngest) Oligocene
    Stratigraphic age (youngest) Oligocene
  • Host or associated Associated
    Rock type Volcanic Rock (Aphanitic) > Intermediate Volcanic Rock > Andesite
    Rock unit name Rawley Andesite;Bonanza Tuff
    Rock description Rawley Andesite;Bonanza Tuff
  • Host or associated Host
    Rock type Volcanic Rock (Aphanitic) > Felsic Volcanic Rock > Latite
    Rock unit name Rawley Andesite;Bonanza Tuff
    Rock description Rawley Andesite;Bonanza Tuff

Economic information

Ore body information

  • Strike N15 TO 25E
    Dip 70 TO 80 SE

Controls for ore emplacement

  • See Comments

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic
Significant No

Mining district

District name Bonanza (Kerber Creek)

Land status

Ownership category Private

Comments on the production information

  • ALTHOUGH SHAWMUT IS ONE OF DISTRICT'S EARLY PRODUCERS, RECORDS ARE UNAVAILABLE. PRODUCTION IN 1888 INCLUDED $80 AU, $2586 AG, $1340 CU.

Workings at the site

  • Type of workings Underground
    Overall depth 121.92M
    Overall length 170.69M
    Overall width 24.38M

Comments on the workings information

  • MINE DEVELOPED BY 300-FT SHAFT AND FIVE PRINCIPAL LEVELS (BASED ON DEPTH BELOW SURFACE): 90, 120, 165, 215, 280. DRIFT FOOTAGES NORTH AND SOUTH FROM SHAFT AND CROSSCUT FOOTAGES AS FOLLOWS: 90 LEVEL, 75 FT NORTH; 120 LEVEL, 120 FT SOUTH; 165 LEVEL, 245 FT NORTH , 85 FT SOUTH, 10 FT CROSSCUT; 215 LEVEL, 310 FT NORTH, 50 FT SOUTH, 50 FT CROSSCUT; 280 LEVEL, 200 FT NORTH, 160 FT SOUTH, 30 FT CROSSCUT. TWO 50-FT RAISES CONNECT 165 AND 215 LEVELS AT POINTS 55 AND 225 FT NORTH OF SHAFT. INTERMEDIATE STATION AT 245 FT IN SHAFT. SHAWMUT TUNNEL DRIVEN 1170 FT AT N83E. AT STATION 13 (990 FT FROM PORTAL) DRIFT DRIVEN NE ALONG SHAWMUT VEIN FOR 65 FT. THENCE RAISE DRIVEN 120 F T TO CONNECT WITH 280 LEVEL AT POINT 40 FT SE OF SHAFT OVERALL LENGTH AND WIDITH GIVEN ABOVE EXLUDES SHAWMUT TUNNEL.

Comments on development

  • AFTER CLAIM LOCATION IN 1885, PROPERTY CHANGED OWNERSHIP SEVERAL TIMES THRU 1907. KAPI MINING AND MILLING CO. STARTED SHAWMUT TUNNEL IN 1912 TO PROVIDE DRAINAGE AND INTERSECT OTHER VEINS. RAISE FROM TUNNEL TO SHAWMUT WORKINGS COMPLETED ABOUT 1918

Reference information

Bibliographic references

  • Deposit

    PATTON, H.B., 1916, GEOLOGY AND ORE DEPOSITS OF THE BONANZA DISTRICT, SAGUACHE COUNTY, COLORADO: COLORADO CEOL. 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 PRINCIPAL VEIN IS SHAWMUT VEIN (ATTITUDE GIVEN ABOVE). SHAWMUT TUNNEL INTERSECTS OTHER VEINS, INCLUDING MAY BELLE VEIN, WEST O F SHAWMUT VEIN TUNNEL AND LOWER MINE LEVELS ARE IN RAWLEY ANDESITE, BUT UPPER LEVELS MAY HAVE PENETRATED BLOCKS OF BONANZA TUFF. BASE OF PB OR E PROBABLY WITHIN 200 FT OF SURFACE.

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.

External references

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.