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

Grand Central - Big Blossom

Producer in Boulder county in Colorado, United States with commodity Gold
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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. Economic information about the deposit and operations
  11. Mining district
  12. Links to other databases
  13. Bibliographic references
  14. Reporter information

Geologic information

Identification information

Deposit ID 10108333
MRDS ID DC04722
Record type Site
Current site name Grand Central - Big Blossom
Related records 10238686

Geographic coordinates

Point of reference Centroid
Geographic coordinates: -105.36606, 40.12218 (WGS84)
Relative position Original record had no geographic coordinates; these coordinates were derived from the PLSS description provided.

Site location context

Political divisions (FIPS codes)

Boulder(county)

Colorado(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Boulder(quadrangle 1:24,000 scale)

Estes Park(quadrangle 1:100,000 scale)

Greeley(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

St. Vrain(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 Boulder

Public Land Survey System information

Meridian Township Range Section Fraction State
6th Principal 02N 71W 20,21 Colorado

Commodities

Commodity Importance
Gold Primary

Materials information

Materials Type of material
Gold Ore

Host and associated rocks

  • Host or associated Host
    Rock type Plutonic Rock > Granitoid > Granite
    Stratigraphic age (youngest) Neoproterozoic

Nearby scientific data

Centroid (1) -105.36606, 40.12218
ListMap

Economic information

Comments on the geologic information

  • GEOL.DESC: COMPLEX OF SILVER PLUME GRANITE, SCHIST, INJECTION GNEISS, PEGMATITE, APLITE AND DIKES OF INTERMEDIATE QTZ MONZONITE PORPHYRY ORE AND SULPHIDE MINERALS: GOLD TELLURIDE, FREE GOLD & FINELY DISSEMINATED PYRITE

Economic information about the deposit and operations

Development status Producer
Commodity type Metallic
Significant No
Production years MORE THAN $30,000

Mining district

District name Jamestown

Reference information

Bibliographic references

  • Deposit

    LOVERING & GODDARD, 1950, USGS PP 223, PG 278, FIG. 77.

  • Deposit

    BLM COLO CONNECTING SHEETS

  • Deposit

    USGS TOPO MAP, 1931, JAMESTOWN AND VICINITY, 1:24000, ADVANCE SHEET

  • Deposit

    CONSV. DIV. COMP. DATE, 10,62

Reporter information

Type Date Name Affiliation Comment
Reporter 01-MAR-73 Conservation Division Files U.S. 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.