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White Cloud Mine

Past Producer in Jefferson county in Colorado, United States with commodities Feldspar, Quartz, Niobium (Columbium), Tantalum, Thorium, REE
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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. Alteration
  9. Host and associated rocks
  10. Nearby scientific data
  11. Geologic structures
  12. Ore body information
  13. Economic information about the deposit and operations
  14. Mining district
  15. Land status
  16. Ownership information
  17. Workings at the site
  18. Links to other databases
  19. Bibliographic references
  20. General comments
  21. Reporter information

Geologic information

Identification information

Deposit ID 10087817
MRDS ID D010163
Record type Site
Current site name White Cloud Mine
Alternate or previous names Claim: White Cloud
Related records 10264038

Geographic coordinates

Geographic coordinates: -105.17614, 39.395 (WGS84)
Elevation 2006
Relative position 18.0 MILES S 25 E FROM EVERGREEN

Site location context

Political divisions (FIPS codes)

Jefferson(county)

Colorado(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Platte Canyon(quadrangle 1:24,000 scale)

Bailey(quadrangle 1:100,000 scale)

Denver(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Upper South Platte(hydrologic unit)

South Platte(hydrologic accounting unit)

South Platte(hydrologic subregion)

Missouri(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 Jefferson

Public Land Survey System information

Meridian Township Range Section Fraction State
6th Principal 007S 070W 36 SW Colorado

Comments on the location information

  • NORTH OF SPRING CREEK 0.9 MILE SW OF SOUTH PLATTE ; INFO FROM LAND.ST :(1975)

Commodities

Commodity Importance
Feldspar Primary
Quartz Primary
Niobium (Columbium) Critical Tertiary
Tantalum Critical Tertiary
Thorium Tertiary
REE Critical Tertiary

Materials information

Materials Type of material
Gadolinite Ore
Quartz Ore
Albite Gangue
Bastnaesite Gangue
Biotite Gangue
Cleavelandite Gangue
Fergusonite Gangue
Fluorite Gangue
Hematite Gangue
Kaolinite Gangue
Microlite Gangue
Monazite Gangue
Prochlorite Gangue
Sericite Gangue
Thalenite Gangue
Thorite Gangue
Topaz Gangue
Xenotime Gangue
Zircon Gangue

Alteration

  • (Local) Feldspar And Biotite Alteration, Fluorite Replacement, Sericitization, Deuterogenic Alteration

Analytical data

Result X-RAY FLUORESCENCE ANALYSIS OF THALENITE YIELDED 44% Y2O3.
Result 5.7% YB2O3, 4.3% DY2O3, 3.5% ER2O3, 1.7% GD2O3, 1.2% HO2O3, 1.1% ND2O3, 0.8% SM2O3, 0.5% CE2O3, 0.3% LA2O3, 0.2% PR2O3, LT 0.9% LU2O3, LT 0.7% TM2O3, LT 0.2% EACH OF EU2O3 AND TB2O3, LT 0.1% EACH OF SC2O3 AND K2O, LT 0.8% U3O8, LT 0.7% THO2, LT 0.05% TI2O3, 0.2% FE2O3, 2.0% CAO, 2.0% AL2O3.
Result PARTIAL X-RAY FLUORESCENCE ANALYSIS OF ALLANITE YIELDED 10.0% CE2O3, 7.5% ND2O3, 4.7% LA2O3, 2.0% Y2O3, 1.6% PR2O3, 1.3% SM2O3, 0.9% GD2O3, 0.4% DY2O3, 0.1% SC2O3, LT 0.2% EACH OF EU2O3, TB2O3, AND HO2O3, LT 0.9% LU2O3, LT 0.7% TM2O3, LT 0.4% ER2O3, LT 0.3% YB2O3, 8.9% CAO, 15.0% AL2O3, 14.0% FE2O3.
Result SPECTROGRAPHIC ANALYSIS OF YTTRIAN FLUORITE YIELDED 3.00 WT % Y, 1.50% CE, 1.5% ND, 1.00% LA, 0.70% GD, 0.30% EACH OF PR, SM, AND YB, 0.50% DY, 0.15% ER, LT 0.1% EACH OF EU, TB, HO, TM, AND LU.
Result LI2B4O7 FUSION ANALYSIS OF YTTROFLUORITE YIELDED 12.9 WT % Y2O3, 2.0% ND2O3, 3.2% CE2O3, 1.9% LA2O3, 1.3% GD2O3, 1.2% DY2O3, 1.0% EACH OF SM2O3 AND ER2O3, 0.9% YB2O3, 0.5% PR2O3, 0.4% EU2O3, 0.3% TB2O3, 0.2% HO2O3, 0.1% TM2O3, LT 0.1% LU2O3 (ADAMS AND SHARP, 1972)

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock > Pegmatite
    Rock unit name Pegmatite;Pikes Peak Granite
    Rock description Pegmatite;Pikes Peak Granite
    Stratigraphic age (youngest) Neoproterozoic
    Stratigraphic age (youngest) Neoproterozoic
  • Host or associated Associated
    Rock type Plutonic Rock > Granitoid > Granite
  • Host or associated Host
    Rock type Plutonic Rock > Pegmatite
    Rock unit name Pegmatite;Pikes Peak Granite
    Rock description Pegmatite;Pikes Peak Granite

Nearby scientific data

(1) -105.17614, 39.395
ListMap

Economic information

Geologic structures

Type of structure Regional
Structure description Front Range Uplift, Pikes Peak Batholith
Type of structure Local
Structure description Kennedy Gulch Fault Zone

Ore body information

  • General form ELLIPTICAL

Economic information about the deposit and operations

Development status Past Producer
Commodity type Both
Deposit size Small
Significant No
Year of last production 1968

Mining district

District name South Platte Pegmatite District

Land status

Ownership category National Forest

Ownership information

  • Type Operator
    Owner Oscar Linstrom
    Home office Denver, Co.
    First year 1968
  • Type Owner
    Owner Don Clements
    Home office Denver, Co.
    First year 1968

Workings at the site

  • Type of workings Unknown
    Overall depth 22.86M

Comments on the workings information

  • OPEN CUTS

Comments on development

  • FIRST MINED FOR FELDSPAR, LATER FOR QUARTZ AND SOME RARE EARTHS

Reference information

Bibliographic references

  • Deposit

    SIMMONS, W.B., AND HEINRICH, E.W., 1980, RARE-EARTH PEGMATITES OF THE SOUTH PLATTE DISTRICT, COLORADO: CGS RESOURCE SER. 11, 131 P.

  • Deposit

    PETERSON, W.L., 1964, GEOLOGY OF THE PLATTE CANYON QUADRANGLE, COLORADO: USGS BULL. 1181-C, 23 P., 1 PL.

  • Deposit

    ADAMS, J.W., AND SHARP, W.N., 1971, THALENITE IN THE WHITE CLOUD PEGMATITE, SOUTH PLATTE DISTRICT, JEFFERSON COUNTY, COLORADO (ABS.): CANADIAN MINERALOGIST, V. 10, P. 907.

  • Deposit

    ADAMS, J.W., AND SHARP, W.N., 1972, THALENITE AND ALLANITE DERIVED FROM YTTROFLUORITE IN THE WHITE CLOUD PEGMATITE, SOUTH PLATTE AREA, COLORADO: USGS PROF. PAPER 800-C, P. C63-C69.

  • Deposit

    HAYNES, C.V., JR., 1958, RARE-EARTH MINERALIZATION IN THE WHITE CLOUD MINE NEAR SOUTH PLATTE, JEFFERSON COUNTY, COLORADO (ABS.): GSA BULL., V. 69, NO. 12, PT. 2, P. 1729-1730.

  • Deposit

    HAYNES, C.V., JR., 1965, GENESIS OF THE WHITE CLOUD AND RELATED PEGMATITES, SOUTH PLATTE AREA, JEFFERSON COUNTY, COLORADO: GSA BULL., V. 76, NO. 4, P. 441-461.

  • Production

    COLORADO DIV. MINES ANN. OPERATORS REPTS.

General comments

Subject category Comment text
Deposit ELLIPTICAL TO IRREGULAR LENS- OR POD-SHAPED PEGMATITE IS DESCRIBED BY HAYNES AS ESSENTIALLY A KALIALASKITE OF GIANT QUARTZ AND PERTHITE. WALL ZONE IS GRAPHIC GRANITE WITH BIOTITE LATHS. OUTER INTERMEDIATE ZONE IS LARGE BIOTITE AGGREGATES IN PERTHITE WITH EUHEDRAL FERGUSONITE, FLUORITE, AND LESS ABUNDANT CYRTOLITE. FLUORITE CONTAINS MICROSCOPIC XENOTIME AND MONAZITE. MIDDLE INTERMEDIATE ZONE IS GIANT PERTHITE WITH SOME QUARTZ, FLUORITE, AND PROCHLORITE. IRREGULAR AND DISCONTINUOUS CORE-MARGIN ZONE IS FLUORITE, LARGELY REPLACED, AROUND CORE OF MASSIVE QUARTZ. PROGRESSING INWARD, REPLACEMENT SEQUENCE DETERMINED BY HAYNES (1965): 1) SELECTIVE REPLACEMENT OF PERTHITE BY ALBITE IN WALL ZONE; 2) IN OUTER INTERMEDIATE ZONE, BIOTITE REPLACED BY HEMATITE, FLUORITE BY YTTROFLUORITE, PERTHITE BY CLEAVELANDITE (ALSO IN MIDDLE INT. ZONE); 4) IN INNER INTERMEDIATE ZONE, FLUORITE REPLACED BY YTTROFLUORITE AND CERIAN FLUORITE. YTTROFLUORITE FURTHER REPLACED BY DOVERITE AND THALENITE ASSOCIATED WITH
Deposit HEMATITE AND SERICITE, WITH LATER FLUORITE IN YTTROFLUORITE AND IN FRACTURES. ADAMS AND SHARP (1972) BELIEVED THALENITE AND ALLANITE FORMED BY METASOMATISM RESULTING FROM INVASION OF YTTROFLUORITE BY

Reporter information

Type Date Name Affiliation Comment
Reporter 01-FEB-1983 Schwochow, Stephen D. Colorado Geological Survey
Updater 01-MAY-1993 Spanski, Gregory T. 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.