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White Cloud pegmatite, South Platte Pegmatite Mining District, Jefferson County, Colorado, USAi
Regional Level Types
White Cloud pegmatitePegmatite
South Platte Pegmatite Mining DistrictMining District
Jefferson CountyCounty
ColoradoState
USACountry

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Latitude & Longitude (WGS84):
39° 23' 44'' North , 105° 10' 35'' West
Latitude & Longitude (decimal):
39.39556,-105.17639
GeoHash:
G#: 9xj0neszs
GRN:
N27W58
Type:
Pegmatite
KΓΆppen climate type:
Dfb : Warm-summer humid continental climate
Nearest Settlements:
PlacePopulationDistance
Roxborough Park9,099 (2011)11.7km
Louviers269 (2011)17.2km
Aspen Park882 (2011)18.9km
Sedalia206 (2011)19.2km
Ken Caryl32,438 (2014)20.8km
Nearest Clubs:
Local clubs are the best way to get access to collecting localities
ClubLocationDistance
Littleton Gem and Mineral Club, Inc.Littleton, Colorado28km
Colorado Mineral SocietyLakewood, Colorado35km
Denver Gem and Mineral GuildDenver, Colorado42km
Friends of Mineralogy - Colorado Chapter Denver, Colorado42km
Western Interior Paleontological SocietyDenver, Colorado42km
Mindat Locality ID:
26279
Long-form identifier:
mindat:1:2:26279:1
GUID (UUID V4):
1f26882a-ed3c-42df-acd2-a91045e43a2c


A pegmatite mine on 2 claims located in sec. 36, T7S, R70W.

Mineralization is a zoned, circular, pipe-like pegmatite body in granite. Core zone: massive quartz; inner zone: quartz-perthite-fluorite; intermediate zone: perthite-quartz; wall zone: quartz-perthite-biotite.

Workings include an open cut.

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Mineral List


20 valid minerals.

Rock Types Recorded

Note: data is currently VERY limited. Please bear with us while we work towards adding this information!

Select Rock List Type

Alphabetical List Tree Diagram

Detailed Mineral List:

β“˜ Albite
Formula: Na(AlSi3O8)
β“˜ Albite var. Cleavelandite
Formula: Na(AlSi3O8)
β“˜ Allanite-(Ce)
Formula: (CaCe)(AlAlFe2+)O[Si2O7][SiO4](OH)
β“˜ 'Allanite Group'
Formula: (A12+REE3+)(M13+M23+M32+)O[Si2O7][SiO4](OH)
β“˜ 'BastnΓ€site'
Formula: (Ce/Nd/Y/REE)(CO3)F
β“˜ 'Biotite'
Formula: K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
β“˜ Cerite-(CeCa) ?
Formula: (Ce7Ca2)◻Mg(SiO4)3(SiO3OH)4(OH)3
β“˜ Clinochlore
Formula: Mg5Al(AlSi3O10)(OH)8
β“˜ 'Feldspar Group'
β“˜ 'Feldspar Group var. Perthite'
β“˜ 'Fergusonite'
β“˜ Fergusonite-(Y)
Formula: YNbO4
β“˜ 'Fluocerite'
β“˜ Fluorite
Formula: CaF2
β“˜ Fluorite var. Yttrofluorite
Formula: (Ca1-xYx)F2+x where 0.05< x
β“˜ 'Gadolinite'
β“˜ Gadolinite-(Ce)
Formula: (Ce,La,Nd,Y)2Fe2+Be2Si2O10
β“˜ Gadolinite-(Y)
Formula: Y2Fe2+Be2Si2O10
β“˜ Hematite
Formula: Fe2O3
β“˜ Kainosite-(Y)
Formula: Ca2(Y,Ce)2(Si4O12)(CO3) · H2O
β“˜ Microcline
Formula: K(AlSi3O8)
β“˜ 'Microlite Group'
Formula: A2-mTa2X6-wZ-n
β“˜ 'Monazite'
Formula: REE(PO4)
β“˜ Muscovite
Formula: KAl2(AlSi3O10)(OH)2
References:
Jim Hall specimen
β“˜ Muscovite var. Sericite
Formula: KAl2(AlSi3O10)(OH)2
β“˜ Quartz
Formula: SiO2
β“˜ Rowlandite-(Y) ?
Formula: (Y,Ce)4Fe2+(Si2O7)2F2 (?)
β“˜ 'Synchysite'
Formula: Ca(Ce/Nd/Y/REE)(CO3)2F
β“˜ Synchysite-(Y)
Formula: CaY(CO3)2F
β“˜ ThalΓ©nite-(Y)
Formula: Y3Si3O10F
β“˜ Thorite
Formula: Th(SiO4)
β“˜ Topaz
Formula: Al2(SiO4)(F,OH)2
β“˜ 'Xenotime'
β“˜ Xenotime-(Y)
Formula: Y(PO4)
β“˜ Zircon
Formula: Zr(SiO4)
β“˜ Zircon var. Cyrtolite
Formula: Zr[(SiO4),(OH)4]

List of minerals arranged by Strunz 10th Edition classification

Group 3 - Halides
β“˜Fluorite3.AB.25CaF2
β“˜var. Yttrofluorite3.AB.25(Ca1-xYx)F2+x where 0.05< x
Group 4 - Oxides and Hydroxides
β“˜'Microlite Group'4.00.A2-mTa2X6-wZ-n
β“˜Hematite4.CB.05Fe2O3
β“˜Quartz4.DA.05SiO2
Group 5 - Nitrates and Carbonates
β“˜Synchysite-(Y)5.BD.20cCaY(CO3)2F
Group 7 - Sulphates, Chromates, Molybdates and Tungstates
β“˜Fergusonite-(Y)7.GA.05YNbO4
Group 8 - Phosphates, Arsenates and Vanadates
β“˜Xenotime-(Y)8.AD.35Y(PO4)
Group 9 - Silicates
β“˜Thorite9.AD.30Th(SiO4)
β“˜Zircon9.AD.30Zr(SiO4)
β“˜var. Cyrtolite9.AD.30Zr[(SiO4),(OH)4]
β“˜Topaz9.AF.35Al2(SiO4)(F,OH)2
β“˜Cerite-(CeCa) ?9.AG.20(Ce7Ca2)β—»Mg(SiO4)3(SiO3OH)4(OH)3
β“˜Gadolinite-(Ce)9.AJ.20(Ce,La,Nd,Y)2Fe2+Be2Si2O10
β“˜Gadolinite-(Y)9.AJ.20Y2Fe2+Be2Si2O10
β“˜Allanite-(Ce)9.BG.05b(CaCe)(AlAlFe2+)O[Si2O7][SiO4](OH)
β“˜ThalΓ©nite-(Y)9.BJ.20Y3Si3O10F
β“˜Kainosite-(Y)9.CF.10Ca2(Y,Ce)2(Si4O12)(CO3) Β· H2O
β“˜Muscovite9.EC.15KAl2(AlSi3O10)(OH)2
β“˜var. Sericite9.EC.15KAl2(AlSi3O10)(OH)2
β“˜Clinochlore9.EC.55Mg5Al(AlSi3O10)(OH)8
β“˜Microcline9.FA.30K(AlSi3O8)
β“˜Albite
var. Cleavelandite		9.FA.35Na(AlSi3O8)
β“˜9.FA.35Na(AlSi3O8)
β“˜Rowlandite-(Y) ?9.HG.20(Y,Ce)4Fe2+(Si2O7)2F2 (?)
Unclassified
β“˜'Monazite'-REE(PO4)
β“˜'Feldspar Group'-
β“˜'Xenotime'-
β“˜'Feldspar Group
var. Perthite'		-
β“˜'Synchysite'-Ca(Ce/Nd/Y/REE)(CO3)2F
β“˜'Fluocerite'-
β“˜'Biotite'-K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
β“˜'BastnΓ€site'-(Ce/Nd/Y/REE)(CO3)F
β“˜'Gadolinite'-
β“˜'Fergusonite'-
β“˜'Allanite Group'-(A12+REE3+)(M13+M23+M32+)O[Si2O7][SiO4](OH)

List of minerals for each chemical element

HHydrogen
Hβ“˜ Allanite-(Ce)(CaCe)(AlAlFe2+)O[Si2O7][SiO4](OH)
Hβ“˜ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Hβ“˜ Cerite-(CeCa)(Ce7Ca2)◻Mg(SiO4)3(SiO3OH)4(OH)3
Hβ“˜ ClinochloreMg5Al(AlSi3O10)(OH)8
Hβ“˜ Kainosite-(Y)Ca2(Y,Ce)2(Si4O12)(CO3) · H2O
Hβ“˜ MuscoviteKAl2(AlSi3O10)(OH)2
Hβ“˜ TopazAl2(SiO4)(F,OH)2
Hβ“˜ Zircon var. CyrtoliteZr[(SiO4),(OH)4]
Hβ“˜ Muscovite var. SericiteKAl2(AlSi3O10)(OH)2
Hβ“˜ Allanite Group(A12+REE3+)(M13+M23+M32+)O[Si2O7][SiO4](OH)
BeBeryllium
Beβ“˜ Gadolinite-(Ce)(Ce,La,Nd,Y)2Fe2+Be2Si2O10
Beβ“˜ Gadolinite-(Y)Y2Fe2+Be2Si2O10
CCarbon
Cβ“˜ BastnΓ€site(Ce/Nd/Y/REE)(CO3)F
Cβ“˜ Kainosite-(Y)Ca2(Y,Ce)2(Si4O12)(CO3) · H2O
Cβ“˜ Synchysite-(Y)CaY(CO3)2F
Cβ“˜ SynchysiteCa(Ce/Nd/Y/REE)(CO3)2F
OOxygen
Oβ“˜ AlbiteNa(AlSi3O8)
Oβ“˜ Allanite-(Ce)(CaCe)(AlAlFe2+)O[Si2O7][SiO4](OH)
Oβ“˜ BastnΓ€site(Ce/Nd/Y/REE)(CO3)F
Oβ“˜ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Oβ“˜ Cerite-(CeCa)(Ce7Ca2)◻Mg(SiO4)3(SiO3OH)4(OH)3
Oβ“˜ ClinochloreMg5Al(AlSi3O10)(OH)8
Oβ“˜ Fergusonite-(Y)YNbO4
Oβ“˜ Gadolinite-(Ce)(Ce,La,Nd,Y)2Fe2+Be2Si2O10
Oβ“˜ Gadolinite-(Y)Y2Fe2+Be2Si2O10
Oβ“˜ HematiteFe2O3
Oβ“˜ Kainosite-(Y)Ca2(Y,Ce)2(Si4O12)(CO3) · H2O
Oβ“˜ MicroclineK(AlSi3O8)
Oβ“˜ MonaziteREE(PO4)
Oβ“˜ MuscoviteKAl2(AlSi3O10)(OH)2
Oβ“˜ QuartzSiO2
Oβ“˜ Rowlandite-(Y)(Y,Ce)4Fe2+(Si2O7)2F2 (?)
Oβ“˜ Synchysite-(Y)CaY(CO3)2F
Oβ“˜ ThalΓ©nite-(Y)Y3Si3O10F
Oβ“˜ ThoriteTh(SiO4)
Oβ“˜ TopazAl2(SiO4)(F,OH)2
Oβ“˜ Xenotime-(Y)Y(PO4)
Oβ“˜ ZirconZr(SiO4)
Oβ“˜ SynchysiteCa(Ce/Nd/Y/REE)(CO3)2F
Oβ“˜ Zircon var. CyrtoliteZr[(SiO4),(OH)4]
Oβ“˜ Albite var. CleavelanditeNa(AlSi3O8)
Oβ“˜ Muscovite var. SericiteKAl2(AlSi3O10)(OH)2
Oβ“˜ Allanite Group(A12+REE3+)(M13+M23+M32+)O[Si2O7][SiO4](OH)
FFluorine
Fβ“˜ BastnΓ€site(Ce/Nd/Y/REE)(CO3)F
Fβ“˜ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Fβ“˜ FluoriteCaF2
Fβ“˜ Rowlandite-(Y)(Y,Ce)4Fe2+(Si2O7)2F2 (?)
Fβ“˜ Synchysite-(Y)CaY(CO3)2F
Fβ“˜ ThalΓ©nite-(Y)Y3Si3O10F
Fβ“˜ TopazAl2(SiO4)(F,OH)2
Fβ“˜ Fluorite var. Yttrofluorite(Ca1-xYx)F2+x where 0.05< x
Fβ“˜ SynchysiteCa(Ce/Nd/Y/REE)(CO3)2F
NaSodium
Naβ“˜ AlbiteNa(AlSi3O8)
Naβ“˜ Albite var. CleavelanditeNa(AlSi3O8)
MgMagnesium
Mgβ“˜ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Mgβ“˜ Cerite-(CeCa)(Ce7Ca2)◻Mg(SiO4)3(SiO3OH)4(OH)3
Mgβ“˜ ClinochloreMg5Al(AlSi3O10)(OH)8
AlAluminium
Alβ“˜ AlbiteNa(AlSi3O8)
Alβ“˜ Allanite-(Ce)(CaCe)(AlAlFe2+)O[Si2O7][SiO4](OH)
Alβ“˜ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Alβ“˜ ClinochloreMg5Al(AlSi3O10)(OH)8
Alβ“˜ MicroclineK(AlSi3O8)
Alβ“˜ MuscoviteKAl2(AlSi3O10)(OH)2
Alβ“˜ TopazAl2(SiO4)(F,OH)2
Alβ“˜ Albite var. CleavelanditeNa(AlSi3O8)
Alβ“˜ Muscovite var. SericiteKAl2(AlSi3O10)(OH)2
SiSilicon
Siβ“˜ AlbiteNa(AlSi3O8)
Siβ“˜ Allanite-(Ce)(CaCe)(AlAlFe2+)O[Si2O7][SiO4](OH)
Siβ“˜ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Siβ“˜ Cerite-(CeCa)(Ce7Ca2)◻Mg(SiO4)3(SiO3OH)4(OH)3
Siβ“˜ ClinochloreMg5Al(AlSi3O10)(OH)8
Siβ“˜ Gadolinite-(Ce)(Ce,La,Nd,Y)2Fe2+Be2Si2O10
Siβ“˜ Gadolinite-(Y)Y2Fe2+Be2Si2O10
Siβ“˜ Kainosite-(Y)Ca2(Y,Ce)2(Si4O12)(CO3) · H2O
Siβ“˜ MicroclineK(AlSi3O8)
Siβ“˜ MuscoviteKAl2(AlSi3O10)(OH)2
Siβ“˜ QuartzSiO2
Siβ“˜ Rowlandite-(Y)(Y,Ce)4Fe2+(Si2O7)2F2 (?)
Siβ“˜ ThalΓ©nite-(Y)Y3Si3O10F
Siβ“˜ ThoriteTh(SiO4)
Siβ“˜ TopazAl2(SiO4)(F,OH)2
Siβ“˜ ZirconZr(SiO4)
Siβ“˜ Zircon var. CyrtoliteZr[(SiO4),(OH)4]
Siβ“˜ Albite var. CleavelanditeNa(AlSi3O8)
Siβ“˜ Muscovite var. SericiteKAl2(AlSi3O10)(OH)2
Siβ“˜ Allanite Group(A12+REE3+)(M13+M23+M32+)O[Si2O7][SiO4](OH)
PPhosphorus
Pβ“˜ MonaziteREE(PO4)
Pβ“˜ Xenotime-(Y)Y(PO4)
KPotassium
Kβ“˜ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Kβ“˜ MicroclineK(AlSi3O8)
Kβ“˜ MuscoviteKAl2(AlSi3O10)(OH)2
Kβ“˜ Muscovite var. SericiteKAl2(AlSi3O10)(OH)2
CaCalcium
Caβ“˜ Allanite-(Ce)(CaCe)(AlAlFe2+)O[Si2O7][SiO4](OH)
Caβ“˜ Cerite-(CeCa)(Ce7Ca2)◻Mg(SiO4)3(SiO3OH)4(OH)3
Caβ“˜ FluoriteCaF2
Caβ“˜ Kainosite-(Y)Ca2(Y,Ce)2(Si4O12)(CO3) · H2O
Caβ“˜ Synchysite-(Y)CaY(CO3)2F
Caβ“˜ Fluorite var. Yttrofluorite(Ca1-xYx)F2+x where 0.05< x
Caβ“˜ SynchysiteCa(Ce/Nd/Y/REE)(CO3)2F
TiTitanium
Tiβ“˜ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
FeIron
Feβ“˜ Allanite-(Ce)(CaCe)(AlAlFe2+)O[Si2O7][SiO4](OH)
Feβ“˜ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Feβ“˜ Gadolinite-(Ce)(Ce,La,Nd,Y)2Fe2+Be2Si2O10
Feβ“˜ Gadolinite-(Y)Y2Fe2+Be2Si2O10
Feβ“˜ HematiteFe2O3
Feβ“˜ Rowlandite-(Y)(Y,Ce)4Fe2+(Si2O7)2F2 (?)
YYttrium
Yβ“˜ BastnΓ€site(Ce/Nd/Y/REE)(CO3)F
Yβ“˜ Fergusonite-(Y)YNbO4
Yβ“˜ Gadolinite-(Ce)(Ce,La,Nd,Y)2Fe2+Be2Si2O10
Yβ“˜ Gadolinite-(Y)Y2Fe2+Be2Si2O10
Yβ“˜ Kainosite-(Y)Ca2(Y,Ce)2(Si4O12)(CO3) · H2O
Yβ“˜ Rowlandite-(Y)(Y,Ce)4Fe2+(Si2O7)2F2 (?)
Yβ“˜ Synchysite-(Y)CaY(CO3)2F
Yβ“˜ ThalΓ©nite-(Y)Y3Si3O10F
Yβ“˜ Xenotime-(Y)Y(PO4)
Yβ“˜ Fluorite var. Yttrofluorite(Ca1-xYx)F2+x where 0.05< x
Yβ“˜ SynchysiteCa(Ce/Nd/Y/REE)(CO3)2F
ZrZirconium
Zrβ“˜ ZirconZr(SiO4)
Zrβ“˜ Zircon var. CyrtoliteZr[(SiO4),(OH)4]
NbNiobium
Nbβ“˜ Fergusonite-(Y)YNbO4
LaLanthanum
Laβ“˜ Gadolinite-(Ce)(Ce,La,Nd,Y)2Fe2+Be2Si2O10
CeCerium
Ceβ“˜ Allanite-(Ce)(CaCe)(AlAlFe2+)O[Si2O7][SiO4](OH)
Ceβ“˜ BastnΓ€site(Ce/Nd/Y/REE)(CO3)F
Ceβ“˜ Cerite-(CeCa)(Ce7Ca2)◻Mg(SiO4)3(SiO3OH)4(OH)3
Ceβ“˜ Gadolinite-(Ce)(Ce,La,Nd,Y)2Fe2+Be2Si2O10
Ceβ“˜ Kainosite-(Y)Ca2(Y,Ce)2(Si4O12)(CO3) · H2O
Ceβ“˜ Rowlandite-(Y)(Y,Ce)4Fe2+(Si2O7)2F2 (?)
Ceβ“˜ SynchysiteCa(Ce/Nd/Y/REE)(CO3)2F
NdNeodymium
Ndβ“˜ BastnΓ€site(Ce/Nd/Y/REE)(CO3)F
Ndβ“˜ Gadolinite-(Ce)(Ce,La,Nd,Y)2Fe2+Be2Si2O10
Ndβ“˜ SynchysiteCa(Ce/Nd/Y/REE)(CO3)2F
TaTantalum
Taβ“˜ Microlite GroupA2-mTa2X6-wZ-n
ThThorium
Thβ“˜ ThoriteTh(SiO4)

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This page contains all mineral locality references listed on mindat.org. This does not claim to be a complete list. If you know of more minerals from this site, please register so you can add to our database. This locality information is for reference purposes only. You should never attempt to visit any sites listed in mindat.org without first ensuring that you have the permission of the land and/or mineral rights holders for access and that you are aware of all safety precautions necessary.

References

Meeves, H.C., Harrer, C.M., Salsbury, M.H., Konselman, A.S., and Shannon, S.S., Jr. (1966) Reconnaissance of beryllium-bearing pegmatite deposits in six western states: Arizona, Colorado, New Mexico, South Dakota, Utah, and Wyoming. US Bureau of Mines Information Circular 8298: 29 (Table A-1).
Simmons, William B., Heinrich, E. William (1980) Rare-Earth Pegmatites of the South Platte District, Colorado. Resource Series 11, Colorado Geological Survey.
Rocks & Minerals (1990) 65: 456.
Eckels, E.B. (1997) Minerals of Colorado.
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