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Big Mica Beryl Prospect

Occurrence in Larimer county in Colorado, United States with commodities Mica, Silver, Lead, Gold, Nickel Laterite
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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 10094635
MRDS ID D010396
Record type Site
Current site name Big Mica Beryl Prospect

Geographic coordinates

Geographic coordinates: -105.60254, 40.67081 (WGS84)
Elevation 2719
Relative position 20.9 MILES N 13 W FROM ESTES PARK

Site location context

Political divisions (FIPS codes)

Larimer(county)

Colorado(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Rustic(quadrangle 1:24,000 scale)

Fort Collins(quadrangle 1:100,000 scale)

Greeley(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Cache La Poudre(hydrologic unit)

South Platte(hydrologic accounting unit)

South Platte(hydrologic subregion)

Missouri(hydrologic region)

Federal lands

Arapaho and Roosevelt 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 Larimer

Public Land Survey System information

Meridian Township Range Section Fraction State
6th Principal 008N 073W 08 SW Colorado

Comments on the location information

  • IN SADDLE ON DIVIDE BETWEEN MINERAL SPRINGS GULCH AND BENNETT CREEK NORTH OF CROWN POINT ROAD. ; INFO FROM LAND.ST :(1980)

Commodities

Commodity Importance
Mica Primary
Silver Primary
Lead Primary
Gold Primary
Nickel Laterite Secondary

Materials information

Materials Type of material
Galena Ore
Muscovite Ore

Analytical data

Result USGS/USBM SAMPLE CONTAINED 0.1 OZ/TON AG, TRACE PB AND AU, 0.021% LA

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock > Pegmatite
    Rock unit name Pegmatite
    Rock description Pegmatite
    Stratigraphic age (youngest) Neoproterozoic
    Stratigraphic age (youngest) Neoproterozoic
    Stratigraphic age (youngest) Neoproterozoic
  • Host or associated Host
    Rock type Metamorphic Rock > Schist
    Rock unit name Quartzofeldspathic Mica Schist And Gneiss And Hornblende Gneiss;Granitic Gneiss
    Rock description Quartzofeldspathic Mica Schist And Gneiss And Hornblende Gneiss;Granitic Gneiss
  • Host or associated Host
    Rock type Metamorphic Rock > Gneiss

Nearby scientific data

(1) -105.60254, 40.67081
ListMap

Economic information

Geologic structures

Type of structure Regional
Structure description Front Range Uplift, Sherman Batholith
Type of structure Local
Structure description Poudre River Shear Zone

Economic information about the deposit and operations

Development status Occurrence
Commodity type Both
Deposit size Small
Significant No
Discovery year 1966

Mining district

District name Mayesville District

Land status

Ownership category National Forest

Comments on the workings information

  • SEVERAL OPEN CUTS

Reference information

Bibliographic references

  • Deposit

    PEARSON, R.C., AND OTHERS, 1981, MINERAL RESOURCES OF THE COMANCHE-BIG SOUTH, NEOTA-FLAT TOP, AND NEVER SUMMER WILDERNESS STUDY AREAS, NORTH-CENTRAL COLORADO: USGS OFR 81-578, P. 27, 32

General comments

Subject category Comment text
Deposit MICA-FELDSPAR-QUARTZ PEGMATITE TRENDS N 30 E, DIPS VERTICALLY

Reporter information

Type Date Name Affiliation Comment
Reporter 01-MAR-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.