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  3. Mineral Resource Data System (MRDS)

Little Bobby Vein

Occurrence in Larimer county in Colorado, United States with commodities Gold, Copper, Lead
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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. Ore body information
  12. Economic information about the deposit and operations
  13. Mining district
  14. Land status
  15. Links to other databases
  16. Bibliographic references
  17. General comments
  18. Reporter information

Geologic information

Identification information

Deposit ID 10013867
MRDS ID D010399
Record type Site
Current site name Little Bobby Vein

Geographic coordinates

Geographic coordinates: -105.65393, 40.68665 (WGS84)
Elevation 2551
Location accuracy 500(meters)
Relative position 22.8 MILES N 19 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

Kinikinik(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)

Comanche Peak Wilderness(Wilderness)

Wilderness 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 074W 02 Colorado

Comments on the location information

  • LOVERING AND GODDARD CITE LOCATION AS APPROX 1.5 MILES SW OF RUGH RANCH. ELEV AND LAT-LONG GIVEN ARE FOR CENTER N2 N2 S2 SEC. 02 ON 8370-FT CONTOUR. ; INFO FROM LAND.ST :(1980)

Commodities

Commodity Importance
Gold Primary
Copper Secondary
Lead Secondary

Materials information

Materials Type of material
Galena Ore
Pyrite Ore
Limonite Gangue

Analytical data

Result CHANNEL SAMPLE CONTAINED 0.30 OZ/TON AU
Result GRAB SAMPLE CONTAINED 0.90 OZ/TON AU

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

Nearby scientific data

(1) -105.65393, 40.68665
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

Ore body information

  • Thickness 0.3M

Economic information about the deposit and operations

Development status Occurrence
Commodity type Metallic
Deposit size Small
Significant No

Mining district

District name Mayesville District

Land status

Ownership category National Forest

Comments on the workings information

  • ONE SHAFT OF UNKNOWN DEPTH AND ONE SHORT ADIT

Reference information

Bibliographic references

  • Deposit

    LOVERING, T.S., AND GODDARD, E.N., 1950, GEOLOGY AND ORE DEPOSITS OF THE FRONT RANGE, COLORADO: USGS PROF. PAPER 223, P. 286

General comments

Subject category Comment text
Deposit VEIN STRIKES N 70 TO 80 E, DIPS 50 N, AND CONSISTS OF 1 FT OF CRUSHED GOUGY ROCK AND 4 FT OF LIMONITE-STAINED SHEETED PEGMATITE ADJACENT TO MAIN SHEAR ZONE. VEIN MATERIAL IS CHIEFLY LIMONITE-STAINED DRUSY BRECCIA SEAMED WITH QUARTZ AND CONTAINING DISSEMINATED CHALCOPYRITE, PYRITE, AND GALENA.

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.