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Iron Mountain prospect

Prospect in Chaffee county in Colorado, United States with commodities Silver, Zinc, Lead, Gold, Copper, Tungsten
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Sections on this page
  1. Identification information
  2. Geographic coordinates
  3. Site location context
  4. Geographic areas
  5. Commodities
  6. Alteration
  7. Mineral occurrence model 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. Bibliographic references
  14. Reporter information

Geologic information

Identification information

Deposit ID 10311052
Record type Site
Current site name Iron Mountain prospect
Alternate or previous names Pica claim group

Geographic coordinates

Geographic coordinates: -106.33338, 38.56833 (WGS84)
Location accuracy 100(meters)

Site location context

Political divisions (FIPS codes)

Chaffee(county)

Colorado(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Garfield(quadrangle 1:24,000 scale)

Gunnison(quadrangle 1:100,000 scale)

Montrose(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Arkansas Headwaters(hydrologic unit)

Upper Arkansas(hydrologic accounting unit)

Upper Arkansas(hydrologic subregion)

Arkansas-White-Red(hydrologic region)

Federal lands

Pike and San Isabel National Forests(National Forest)

National Forest FS(Type of land area)

FS(Federal land areas administered by FS)

Geographic areas

Country State County
United States Colorado Chaffee

Comments on the location information

  • About 15 miles WNW of Poncha Springs, just east of the Continental Divide, in secs 19-20, T 50 N, R 6 E.

Commodities

Commodity Importance
Silver Primary
Zinc Critical Primary
Lead Primary
Gold Secondary
Copper Secondary
Tungsten Critical Tertiary

Comments on the commodity information

  • Two sample intercepts from a drill hole yielded values up to 30 oz/ton silver, 12% zinc, 5.6% lead, 3.4 % copper, and 0.029 oz/ton gold. (Sunshine files, 1987)

Alteration

  • (Local) quartz-sericite

Mineral occurrence model information

Model code 85
USGS model code 22c
Deposit model name Polymetallic veins
Mark3 model number 46

Host and associated rocks

  • Host or associated Host
    Rock type Plutonic Rock > Granitoid > Quartz Monzonite
    Stratigraphic age (youngest) Proterozoic
  • Host or associated Associated
    Rock type Plutonic Rock > Granitoid > Granite
    Stratigraphic age (youngest) Oligocene

Nearby scientific data

(1) -106.33338, 38.56833
ListMap

Economic information

Geologic structures

Type of structure Local
Structure description fracture controlled

Comments on the geologic information

  • A base- and precious-metals anomaly indicates a possible bonanza vein target. (Sunshine files, 1987)

Economic information about the deposit and operations

Development status Prospect

Mining district

District name Monarch District

Comments on development

  • The Pica group includes 32 unpatented claims. The Lexington adit, other prospect pits, and a 3000-ft drill hole are within the group boundary.

Reference information

Bibliographic references

  • Deposit

    Sunshine Mining Co. Colorado exploration files, unpublished data, Colorado Geological Survey.

  • Deposit

    Dings, M. G., and Robinson, C. S., 1957, Geology and ore deposits of the Garfield quadrangle, Colorado: U.S. Geological Survey Professional Paper 289, 110 p.

Reporter information

Type Date Name Affiliation Comment
Reporter 07-MAR-06 Beach, Richard A. 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.