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  3. Mineral Resource Data System (MRDS)

Last Chance #1, #2

Occurrence in Saguache county in Colorado, United States with commodities Gold, Silver, Lead, Zinc, Manganese
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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. Host and associated rocks
  9. Nearby scientific data
  10. Geologic structures
  11. Economic information about the deposit and operations
  12. Mining district
  13. Land status
  14. Links to other databases
  15. Bibliographic references
  16. General comments
  17. Reporter information

Geologic information

Identification information

Deposit ID 10016255
MRDS ID DC00772
Record type Site
Current site name Last Chance #1, #2
Alternate or previous names Mexican Lode #1, #2, Red Bird Claims Claims Claims
Related records 10257228

Geographic coordinates

Geographic coordinates: -106.30866, 37.94501 (WGS84)
Elevation 2804
Relative position 18.5 MILES N8E OF DEL NORTE

Site location context

Political divisions (FIPS codes)

Saguache(county)

Colorado(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Lime Creek(quadrangle 1:24,000 scale)

Del Norte(quadrangle 1:100,000 scale)

Durango(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Saguache(hydrologic unit)

Rio Grande Headwaters(hydrologic accounting unit)

Rio Grande Headwaters(hydrologic subregion)

Rio Grande(hydrologic region)

Geographic areas

Country State County
United States Colorado Saguache

Public Land Survey System information

Meridian Township Range Section Fraction State
New Mexico 43N 06E 22,27,28 S2 (22); W2 (27); E2 OF E2 (28) Colorado

Comments on the location information

  • BETWEEN BIEDELL CR AND SANDERSON GULCH ; INFO FROM LAND.ST :(1977)

Commodities

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

Comments on the commodity information

  • ORE MINERALS BASED ON OCCURRENCES AT BUCKHORN MINE

Materials information

Materials Type of material
Cerargyrite Ore
Gold Ore
Wad Ore

Analytical data

Result 15.35 % MN

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock > Granitoid > Quartz Monzonite
    Rock unit name Intrusive Rocks Emplaced During Period Of Early Intermediate Eruptions;Early Intermediate Lavas And Breccias (Near-Source Facies)
    Rock description Intrusive Rocks Emplaced During Period Of Early Intermediate Eruptions;Early Intermediate Lavas And Breccias (Near-Source Facies)
    Stratigraphic age (youngest) Oligocene
    Stratigraphic age (youngest) Oligocene
  • Host or associated Associated
    Rock type Plutonic Rock > Mafic Intrusive Rock > Gabbro
  • Host or associated Associated
    Rock type Volcanic Rock (Aphanitic) > Intermediate Volcanic Rock > Andesite
  • Host or associated Host
    Rock type Plutonic Rock > Granitoid > Quartz Monzonite
    Rock unit name Intrusive Rocks Emplaced During Period Of Early Intermediate Eruptions;Early Intermediate Lavas And Breccias (Near-Source Facies)
    Rock description Intrusive Rocks Emplaced During Period Of Early Intermediate Eruptions;Early Intermediate Lavas And Breccias (Near-Source Facies)

Nearby scientific data

(1) -106.30866, 37.94501
ListMap

Economic information

Geologic structures

Type of structure Regional
Structure description San Juan Volcanic Field
Type of structure Local
Structure description Summer Coon Volcanic Center, La Garita Caldera

Comments on the geologic information

  • GEOL.DESC: MN 15.35%

Economic information about the deposit and operations

Development status Occurrence
Commodity type Metallic
Deposit size Small
Significant No

Mining district

District name Crystal Hill District District District

Land status

Ownership category Private

Comments on the workings information

  • ONE SHAFT AND SEVERAL TUNNELS OF UNKNOWN EXTENT, NUMEROUS SURFACE PROSPECTS

Reference information

Bibliographic references

  • Deposit

    BMC RECORD DATA FILES

  • Deposit

    STEVEN, T.A., AND OTHERS, 1974, GEOLOGIC MAP OF THE DURANGO QUADRANGLE, SOUTHWESTERN COLORADO: USGS 1-764

General comments

Subject category Comment text
Deposit ALTHOUGH TYPE OF MINERALIZATION UNKNOWN, ORES APPEAR TO BE CONTAINED IN SMALL VOLCANIC NECK OR PLUG OF QUARTZ MONZONITIC, GRANODIORITIC, OR SYENOGABBROIC COMPOSITION. COUNTRY ROCKS ARE WIDESPREAD ANDESITIC FLOWS AND BRECCIAS

Reporter information

Type Date Name Affiliation Comment
Reporter 01-OCT-1972 Unknown Unknown
Updater 01-FEB-1982 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.