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  3. Mineral Resource Data System (MRDS)

Brown Spar

Producer in Boulder county in Colorado, United States with commodities Fluorine-Fluorite, Uranium
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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. Host and associated rocks
  8. Nearby scientific data
  9. Economic information about the deposit and operations
  10. Mining district
  11. Production statistics
  12. Links to other databases
  13. Bibliographic references
  14. Reporter information

Geologic information

Identification information

Deposit ID 10108205
MRDS ID DC03091
Record type Site
Current site name Brown Spar
Related records 10141511

Geographic coordinates

Geographic coordinates: -105.39865, 40.12248 (WGS84)
Relative position NW 1/4 SW 1/4 NE 1/4

Site location context

Political divisions (FIPS codes)

Boulder(county)

Colorado(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Gold Hill(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 72W 24 Colorado

Commodities

Commodity Importance
Fluorine-Fluorite Critical Primary
Uranium Primary

Host and associated rocks

  • Host or associated Host
    Rock type Plutonic Rock > Mafic Intrusive Rock > Diorite
    Stratigraphic age (youngest) Late Cretaceous

Nearby scientific data

(1) -105.39865, 40.12248
ListMap

Economic information

Comments on the geologic information

  • GEOL.DESC: ORE & SULFIDE MIN.: CHIEFLY VIOLET FLUORSPAR, SOME PYRITE AND GALENA

Economic information about the deposit and operations

Development status Producer
Commodity type Both
Significant No

Mining district

District name Jamestown

Production statistics

  • Year 1943
    Material F
    Accuracy Estimate
    Description Ap_Grade: ^62. % Caf2 Ave.
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    CaF2 Fluorine-Fluorite Fluorine 62wt-pct

Comments on the production information

  • FLUORSPAR. NO URANIUM PRODUCTION

Reference information

Bibliographic references

  • Deposit

    GODDARD, COLO. SCI. SOC. PROC., V. 15, NO. 1, PG 35-36, PL. 7

  • Deposit

    SIMS & SHERIDAN, 1964, USGS BULL. 1159

  • Deposit

    LOVERING & GODDARD, 1950, USGS P.P. 223, P.278, FIG. 77

  • Deposit

    3A) ARGALL, 1949, COLO. SCH. OF MINES QUARTERLY, VOL. 44, NO.2, P.182

  • Deposit

    3B) AURAND, 1920, COLO. GEOL. SURV. BULL. 18, P.39

  • Deposit

    CONSV. DIV. COMP. DATE, 10,62

Reporter information

Type Date Name Affiliation Comment
Reporter 01-MAR-1973 Conservation Division Files U.S. Geological Survey
Updater 01-JAN-1974 Unknown U.S. Geological Survey

Beyond USGS

Supplemental information added by qvyshift.com. Not part of the original USGS MRDS record.

External references

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.