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

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Latitude & Longitude (WGS84):
39° 23' 44'' North , 105° 10' 35'' West
Latitude & Longitude (decimal):
Locality type:
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


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.

Regions containing this locality

North America PlateTectonic Plate
Rocky Mountains, North AmericaMountain Range

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Mineral List


20 valid minerals.

Rock Types Recorded

Note: this is a very new system on mindat.org and 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:

Albite
Formula: Na(AlSi3O8)
Reference: U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
Albite var: Cleavelandite
Formula: Na(AlSi3O8)
Reference: U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
Allanite-(Ce)
Formula: {CaCe}{Al2Fe2+}(Si2O7)(SiO4)O(OH)
Reference: Minerals of Colorado (1997) E.B. Eckel
'Allanite Group'
Formula: {A12+REE3+}{M3+2M32+}(Si2O7)(SiO4)O(OH)
Reference: Rare-Earth Pegmatites of the South Platte District, Colorado CGS Res Ser 11; Meeves, H., et al (1966), Reconnaissance of beryllium-bearing pegmatite deposits in six western states, US Bur. Mines Info. Circ. 8298: 29 (Table A-1).; Rhiana E. Henry, Charles Stern, Markus B. Raschke, Julien M. Allaz,Evan J. D. Anderson, Alexandra Skewes (2016) Rare Earth Element Pegmatites in the South Platte Region of Colorado. in Second Eugene E. Foord Pegmatite Symposium July 15-19, 2016 Colorado School of Mines campus, Golden, Colorado
'Bastnäsite'
Reference: Rare-Earth Pegmatites of the South Platte District, Colorado CGS Res Ser 11
'Biotite'
Formula: K(Fe2+/Mg)2(Al/Fe3+/Mg)([Si/Al]Si2O10)(OH/F)2
Reference: Meeves, H., et al (1966), Reconnaissance of beryllium-bearing pegmatite deposits in six western states, US Bur. Mines Info. Circ. 8298: 29 (Table A-1).; Rhiana E. Henry, Charles Stern, Markus B. Raschke, Julien M. Allaz,Evan J. D. Anderson, Alexandra Skewes (2016) Rare Earth Element Pegmatites in the South Platte Region of Colorado. in Second Eugene E. Foord Pegmatite Symposium July 15-19, 2016 Colorado School of Mines campus, Golden, Colorado
Cerite-(Ce) ?
Formula: (Ce,Ca)9(Mg,Fe)(SiO4)3(HSiO4)4(OH)3
Reference: Minerals of Colorado (1997) Eckel, E. B.
Clinochlore
Formula: Mg5Al(AlSi3O10)(OH)8
Reference: U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
'Feldspar Group'
Reference: Meeves, H., et al (1966), Reconnaissance of beryllium-bearing pegmatite deposits in six western states, US Bur. Mines Info. Circ. 8298: 29 (Table A-1).
'Feldspar Group var: Perthite'
Reference: Meeves, H., et al (1966), Reconnaissance of beryllium-bearing pegmatite deposits in six western states, US Bur. Mines Info. Circ. 8298: 29 (Table A-1).
'Fergusonite'
Reference: U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
Fergusonite-(Y)
Formula: YNbO4
Reference: Minerals of Colorado (1997) E.B. Eckel
'Fluocerite'
Reference: Minerals of Colorado (1997) Eckel, E. B.
Fluorite
Formula: CaF2
Reference: Meeves, H., et al (1966), Reconnaissance of beryllium-bearing pegmatite deposits in six western states, US Bur. Mines Info. Circ. 8298: 29 (Table A-1); Rocks & Min.: 65:456.
Fluorite var: Yttrofluorite
Formula: (Ca1-xYx)F2+x where 0.05< x <0.3
Reference: Rare-Earth Pegmatites of the South Platte District, Colorado CGS Res Ser 11; Meeves, H., et al (1966), Reconnaissance of beryllium-bearing pegmatite deposits in six western states, US Bur. Mines Info. Circ. 8298: 29 (Table A-1).; Rhiana E. Henry, Charles Stern, Markus B. Raschke, Julien M. Allaz,Evan J. D. Anderson, Alexandra Skewes (2016) Rare Earth Element Pegmatites in the South Platte Region of Colorado. in Second Eugene E. Foord Pegmatite Symposium July 15-19, 2016 Colorado School of Mines campus, Golden, Colorado
'Gadolinite'
Reference: Rare-Earth Pegmatites of the South Platte District, Colorado CGS Res Ser 11; Meeves, H., et al (1966), Reconnaissance of beryllium-bearing pegmatite deposits in six western states, US Bur. Mines Info. Circ. 8298: 29 (Table A-1).
Gadolinite-(Ce)
Formula: (Ce,La,Nd,Y)2Fe2+Be2Si2O10
Reference: Minerals of Colorado (1997) Eckel, E. B.
Gadolinite-(Y)
Formula: Y2Fe2+Be2Si2O10
Reference: Minerals of Colorado (1997) Eckel, E. B.
Hematite
Formula: Fe2O3
Reference: Rare-Earth Pegmatites of the South Platte District, Colorado CGS Res Ser 11
Kainosite-(Y)
Formula: Ca2(Y,Ce)2(Si4O12)(CO3) · H2O
Reference: Grant Martin's Collection
Microcline
Formula: K(AlSi3O8)
Reference: Rare-Earth Pegmatites of the South Platte District, Colorado CGS Res Ser 11
'Microlite Group'
Formula: A2-mTa2X6-wZ-n
Reference: Meeves, H., et al (1966), Reconnaissance of beryllium-bearing pegmatite deposits in six western states, US Bur. Mines Info. Circ. 8298: 29 (Table A-1).
'Monazite'
Reference: Rare-Earth Pegmatites of the South Platte District, Colorado CGS Res Ser 11
Muscovite
Formula: KAl2(AlSi3O10)(OH)2
Reference: Jim Hall specimen
Muscovite var: Sericite
Formula: KAl2(AlSi3O10)(OH)2
Reference: U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
Quartz
Formula: SiO2
Reference: Rare-Earth Pegmatites of the South Platte District, Colorado CGS Res Ser 11; Meeves, H., et al (1966), Reconnaissance of beryllium-bearing pegmatite deposits in six western states, US Bur. Mines Info. Circ. 8298: 29 (Table A-1).; Rhiana E. Henry, Charles Stern, Markus B. Raschke, Julien M. Allaz,Evan J. D. Anderson, Alexandra Skewes (2016) Rare Earth Element Pegmatites in the South Platte Region of Colorado. in Second Eugene E. Foord Pegmatite Symposium July 15-19, 2016 Colorado School of Mines campus, Golden, Colorado
Rowlandite-(Y) ?
Formula: (Y,Ce)4Fe2+(Si2O7)2F2 (?)
Reference: Minerals of Colorado (1997) E.B. Eckels
'Synchysite'
Reference: Rhiana E. Henry, Charles Stern, Markus B. Raschke, Julien M. Allaz,Evan J. D. Anderson, Alexandra Skewes (2016) Rare Earth Element Pegmatites in the South Platte Region of Colorado. in Second Eugene E. Foord Pegmatite Symposium July 15-19, 2016 Colorado School of Mines campus, Golden, Colorado
Synchysite-(Y)
Formula: CaY(CO3)2F
Reference: Rare-Earth Pegmatites of the South Platte District, Colorado CGS Res Ser 11
Thalénite-(Y)
Formula: Y3Si3O10F
Reference: Rare-Earth Pegmatites of the South Platte District, Colorado CGS Res Ser 11; Škoda, R., Plášil, J., Jonsson, E., Čopjaková, R., Langhof, J., Vašinová Galiová, M. (2015): Redefinition of thalénite-(Y) and discreditation of fluorthalénite-(Y): A re-investigation of type material from the Österby pegmatite, Dalarna, Sweden, and from additional localities. Mineralogical Magazine, 79, 965-983.
Thorite
Formula: Th(SiO4)
Reference: U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.; Rhiana E. Henry, Charles Stern, Markus B. Raschke, Julien M. Allaz,Evan J. D. Anderson, Alexandra Skewes (2016) Rare Earth Element Pegmatites in the South Platte Region of Colorado. in Second Eugene E. Foord Pegmatite Symposium July 15-19, 2016 Colorado School of Mines campus, Golden, Colorado
Topaz
Formula: Al2(SiO4)(F,OH)2
Reference: Meeves, H., et al (1966), Reconnaissance of beryllium-bearing pegmatite deposits in six western states, US Bur. Mines Info. Circ. 8298: 29 (Table A-1).
'Xenotime'
Reference: Rhiana E. Henry, Charles Stern, Markus B. Raschke, Julien M. Allaz,Evan J. D. Anderson, Alexandra Skewes (2016) Rare Earth Element Pegmatites in the South Platte Region of Colorado. in Second Eugene E. Foord Pegmatite Symposium July 15-19, 2016 Colorado School of Mines campus, Golden, Colorado
Xenotime-(Y)
Formula: Y(PO4)
Reference: Rare-Earth Pegmatites of the South Platte District, Colorado CGS Res Ser 11
Zircon
Formula: Zr(SiO4)
Reference: U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
Zircon var: Cyrtolite
Formula: Zr[(SiO4),(OH)4]
Reference: Minerals of Colorado (1997) E.B. Eckel

List of minerals arranged by Strunz 10th Edition classification

Group 3 - Halides
Fluorite3.AB.25CaF2
var: Yttrofluorite3.AB.25(Ca1-xYx)F2+x where 0.05< x <0.3
Group 4 - Oxides and Hydroxides
Hematite4.CB.05Fe2O3
'Microlite Group'4.00.A2-mTa2X6-wZ-n
Quartz4.DA.05SiO2
Group 5 - Nitrates and Carbonates
Synchysite-(Y)5.BD.20cCaY(CO3)2F
Group 7 - Sulphates, Chromates, Molybdates and Tungstates
Fergusonite-(Y)7.GA.05YNbO4
Group 8 - Phosphates, Arsenates and Vanadates
Xenotime-(Y)8.AD.35Y(PO4)
Group 9 - Silicates
Albite9.FA.35Na(AlSi3O8)
var: Cleavelandite9.FA.35Na(AlSi3O8)
Allanite-(Ce)9.BG.05b{CaCe}{Al2Fe2+}(Si2O7)(SiO4)O(OH)
Cerite-(Ce) ?9.AG.20(Ce,Ca)9(Mg,Fe)(SiO4)3(HSiO4)4(OH)3
Clinochlore9.EC.55Mg5Al(AlSi3O10)(OH)8
Gadolinite-(Ce)9.AJ.20(Ce,La,Nd,Y)2Fe2+Be2Si2O10
Gadolinite-(Y)9.AJ.20Y2Fe2+Be2Si2O10
Kainosite-(Y)9.CF.10Ca2(Y,Ce)2(Si4O12)(CO3) · H2O
Microcline9.FA.30K(AlSi3O8)
Muscovite9.EC.15KAl2(AlSi3O10)(OH)2
var: Sericite9.EC.15KAl2(AlSi3O10)(OH)2
Rowlandite-(Y) ?9.HG.20(Y,Ce)4Fe2+(Si2O7)2F2 (?)
Thalénite-(Y)9.BJ.20Y3Si3O10F
Thorite9.AD.30Th(SiO4)
Topaz9.AF.35Al2(SiO4)(F,OH)2
Zircon9.AD.30Zr(SiO4)
var: Cyrtolite9.AD.30Zr[(SiO4),(OH)4]
Unclassified Minerals, Rocks, etc.
'Allanite Group'-{A12+REE3+}{M3+2M32+}(Si2O7)(SiO4)O(OH)
'Bastnäsite'-
'Biotite'-K(Fe2+/Mg)2(Al/Fe3+/Mg)([Si/Al]Si2O10)(OH/F)2
'Feldspar Group'-
'var: Perthite'-
'Fergusonite'-
'Fluocerite'-
'Gadolinite'-
'Monazite'-
'Synchysite'-
'Xenotime'-

List of minerals arranged by Dana 8th Edition classification

Group 4 - SIMPLE OXIDES
A2X3
Hematite4.3.1.2Fe2O3
Group 8 - MULTIPLE OXIDES CONTAINING NIOBIUM,TANTALUM OR TITANIUM
ABO4
Fergusonite-(Y)8.1.1.1YNbO4
A2B2O6(O,OH,F)
'Microlite Group'8.2.2.1A2-mTa2X6-wZ-n
Group 9 - NORMAL HALIDES
AX2
Fluorite9.2.1.1CaF2
Group 16a - ANHYDROUS CARBONATES CONTAINING HYDROXYL OR HALOGEN
Synchysite-(Y)16a.1.3.2CaY(CO3)2F
Group 51 - NESOSILICATES Insular SiO4 Groups Only
Insular SiO4 Groups Only with cations in >[6] coordination
Thorite51.5.2.3Th(SiO4)
Zircon51.5.2.1Zr(SiO4)
Group 52 - NESOSILICATES Insular SiO4 Groups and O,OH,F,H2O
Insular SiO4 Groups and O, OH, F, and H2O with cations in [6] coordination only
Topaz52.3.1.1Al2(SiO4)(F,OH)2
Insular SiO4 Groups and O, OH, F, and H2O with cations in [6] and/or >[6] coordination
Cerite-(Ce) ?52.4.6.1(Ce,Ca)9(Mg,Fe)(SiO4)3(HSiO4)4(OH)3
Group 54 - NESOSILICATES Borosilicates and Some Beryllosilicates
Borosilicates and Some Beryllosilicates with B in [4] coordination
Gadolinite-(Ce)54.2.1b.2(Ce,La,Nd,Y)2Fe2+Be2Si2O10
Gadolinite-(Y)54.2.1b.3Y2Fe2+Be2Si2O10
Group 55 - SOROSILICATES Si2O7 Groups,Generally with no Additional Anions
Si2O7 Groups, Generally with no Additional Anions with cations in [6] coordination
Rowlandite-(Y) ?55.2.1b.1(Y,Ce)4Fe2+(Si2O7)2F2 (?)
Thalénite-(Y)55.2.1b.2Y3Si3O10F
Group 58 - SOROSILICATES Insular, Mixed, Single, and Larger Tetrahedral Groups
Insular, Mixed, Single, and Larger Tetrahedral Groups with cations in [6] and higher coordination; single and double groups (n = 1, 2)
Allanite-(Ce)58.2.1a.1{CaCe}{Al2Fe2+}(Si2O7)(SiO4)O(OH)
Group 60 - CYCLOSILICATES Four-Membered Rings
Four-Membered Rings with other anion groups
Kainosite-(Y)60.2.1.1Ca2(Y,Ce)2(Si4O12)(CO3) · H2O
Group 71 - PHYLLOSILICATES Sheets of Six-Membered Rings
Sheets of 6-membered rings with 2:1 layers
Muscovite71.2.2a.1KAl2(AlSi3O10)(OH)2
Sheets of 6-membered rings interlayered 1:1, 2:1, and octahedra
Clinochlore71.4.1.4Mg5Al(AlSi3O10)(OH)8
Group 75 - TECTOSILICATES Si Tetrahedral Frameworks
Si Tetrahedral Frameworks - SiO2 with [4] coordinated Si
Quartz75.1.3.1SiO2
Group 76 - TECTOSILICATES Al-Si Framework
Al-Si Framework with Al-Si frameworks
Albite76.1.3.1Na(AlSi3O8)
Microcline76.1.1.5K(AlSi3O8)
Unclassified Minerals, Mixtures, etc.
Albite
var: Cleavelandite
-Na(AlSi3O8)
'Allanite Group'-{A12+REE3+}{M3+2M32+}(Si2O7)(SiO4)O(OH)
'Bastnäsite'-
'Biotite'-K(Fe2+/Mg)2(Al/Fe3+/Mg)([Si/Al]Si2O10)(OH/F)2
'Feldspar Group'-
'var: Perthite'-
'Fergusonite'-
'Fluocerite'-
Fluorite
var: Yttrofluorite
-(Ca1-xYx)F2+x where 0.05< x <0.3
'Gadolinite'-
'Monazite'-
Muscovite
var: Sericite
-KAl2(AlSi3O10)(OH)2
'Synchysite'-
'Xenotime'-
Xenotime-(Y)-Y(PO4)
Zircon
var: Cyrtolite
-Zr[(SiO4),(OH)4]

List of minerals for each chemical element

HHydrogen
H Muscovite (var: Sericite)KAl2(AlSi3O10)(OH)2
H Allanite Group{A12+REE3+}{M23+M32+}(Si2O7)(SiO4)O(OH)
H BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg)([Si/Al]Si2O10)(OH/F)2
H TopazAl2(SiO4)(F,OH)2
H ClinochloreMg5Al(AlSi3O10)(OH)8
H Allanite-(Ce){CaCe}{Al2Fe2+}(Si2O7)(SiO4)O(OH)
H Zircon (var: Cyrtolite)Zr[(SiO4),(OH)4]
H MuscoviteKAl2(AlSi3O10)(OH)2
H Kainosite-(Y)Ca2(Y,Ce)2(Si4O12)(CO3) · H2O
H Cerite-(Ce)(Ce,Ca)9(Mg,Fe)(SiO4)3(HSiO4)4(OH)3
BeBeryllium
Be Gadolinite-(Ce)(Ce,La,Nd,Y)2Fe2+Be2Si2O10
Be Gadolinite-(Y)Y2Fe2+Be2Si2O10
CCarbon
C Synchysite-(Y)CaY(CO3)2F
C Kainosite-(Y)Ca2(Y,Ce)2(Si4O12)(CO3) · H2O
OOxygen
O Synchysite-(Y)CaY(CO3)2F
O MicroclineK(AlSi3O8)
O Muscovite (var: Sericite)KAl2(AlSi3O10)(OH)2
O Allanite Group{A12+REE3+}{M23+M32+}(Si2O7)(SiO4)O(OH)
O Thalénite-(Y)Y3Si3O10F
O HematiteFe2O3
O QuartzSiO2
O Xenotime-(Y)Y(PO4)
O BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg)([Si/Al]Si2O10)(OH/F)2
O TopazAl2(SiO4)(F,OH)2
O Albite (var: Cleavelandite)Na(AlSi3O8)
O ClinochloreMg5Al(AlSi3O10)(OH)8
O ThoriteTh(SiO4)
O ZirconZr(SiO4)
O Allanite-(Ce){CaCe}{Al2Fe2+}(Si2O7)(SiO4)O(OH)
O Gadolinite-(Ce)(Ce,La,Nd,Y)2Fe2+Be2Si2O10
O Gadolinite-(Y)Y2Fe2+Be2Si2O10
O Zircon (var: Cyrtolite)Zr[(SiO4),(OH)4]
O Fergusonite-(Y)YNbO4
O MuscoviteKAl2(AlSi3O10)(OH)2
O Kainosite-(Y)Ca2(Y,Ce)2(Si4O12)(CO3) · H2O
O AlbiteNa(AlSi3O8)
O Cerite-(Ce)(Ce,Ca)9(Mg,Fe)(SiO4)3(HSiO4)4(OH)3
O Rowlandite-(Y)(Y,Ce)4Fe2+(Si2O7)2F2 (?)
FFluorine
F FluoriteCaF2
F Synchysite-(Y)CaY(CO3)2F
F Fluorite (var: Yttrofluorite)(Ca1-xYx)F2+x where 0.05< x <0.3
F Thalénite-(Y)Y3Si3O10F
F BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg)([Si/Al]Si2O10)(OH/F)2
F TopazAl2(SiO4)(F,OH)2
F Rowlandite-(Y)(Y,Ce)4Fe2+(Si2O7)2F2 (?)
NaSodium
Na Albite (var: Cleavelandite)Na(AlSi3O8)
Na AlbiteNa(AlSi3O8)
MgMagnesium
Mg BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg)([Si/Al]Si2O10)(OH/F)2
Mg ClinochloreMg5Al(AlSi3O10)(OH)8
Mg Cerite-(Ce)(Ce,Ca)9(Mg,Fe)(SiO4)3(HSiO4)4(OH)3
AlAluminium
Al MicroclineK(AlSi3O8)
Al Muscovite (var: Sericite)KAl2(AlSi3O10)(OH)2
Al BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg)([Si/Al]Si2O10)(OH/F)2
Al TopazAl2(SiO4)(F,OH)2
Al Albite (var: Cleavelandite)Na(AlSi3O8)
Al ClinochloreMg5Al(AlSi3O10)(OH)8
Al Allanite-(Ce){CaCe}{Al2Fe2+}(Si2O7)(SiO4)O(OH)
Al MuscoviteKAl2(AlSi3O10)(OH)2
Al AlbiteNa(AlSi3O8)
SiSilicon
Si MicroclineK(AlSi3O8)
Si Muscovite (var: Sericite)KAl2(AlSi3O10)(OH)2
Si Allanite Group{A12+REE3+}{M23+M32+}(Si2O7)(SiO4)O(OH)
Si Thalénite-(Y)Y3Si3O10F
Si QuartzSiO2
Si BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg)([Si/Al]Si2O10)(OH/F)2
Si TopazAl2(SiO4)(F,OH)2
Si Albite (var: Cleavelandite)Na(AlSi3O8)
Si ClinochloreMg5Al(AlSi3O10)(OH)8
Si ThoriteTh(SiO4)
Si ZirconZr(SiO4)
Si Allanite-(Ce){CaCe}{Al2Fe2+}(Si2O7)(SiO4)O(OH)
Si Gadolinite-(Ce)(Ce,La,Nd,Y)2Fe2+Be2Si2O10
Si Gadolinite-(Y)Y2Fe2+Be2Si2O10
Si Zircon (var: Cyrtolite)Zr[(SiO4),(OH)4]
Si MuscoviteKAl2(AlSi3O10)(OH)2
Si Kainosite-(Y)Ca2(Y,Ce)2(Si4O12)(CO3) · H2O
Si AlbiteNa(AlSi3O8)
Si Cerite-(Ce)(Ce,Ca)9(Mg,Fe)(SiO4)3(HSiO4)4(OH)3
Si Rowlandite-(Y)(Y,Ce)4Fe2+(Si2O7)2F2 (?)
PPhosphorus
P Xenotime-(Y)Y(PO4)
KPotassium
K MicroclineK(AlSi3O8)
K Muscovite (var: Sericite)KAl2(AlSi3O10)(OH)2
K BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg)([Si/Al]Si2O10)(OH/F)2
K MuscoviteKAl2(AlSi3O10)(OH)2
CaCalcium
Ca FluoriteCaF2
Ca Synchysite-(Y)CaY(CO3)2F
Ca Fluorite (var: Yttrofluorite)(Ca1-xYx)F2+x where 0.05< x <0.3
Ca Allanite-(Ce){CaCe}{Al2Fe2+}(Si2O7)(SiO4)O(OH)
Ca Kainosite-(Y)Ca2(Y,Ce)2(Si4O12)(CO3) · H2O
Ca Cerite-(Ce)(Ce,Ca)9(Mg,Fe)(SiO4)3(HSiO4)4(OH)3
FeIron
Fe HematiteFe2O3
Fe BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg)([Si/Al]Si2O10)(OH/F)2
Fe Allanite-(Ce){CaCe}{Al2Fe2+}(Si2O7)(SiO4)O(OH)
Fe Gadolinite-(Ce)(Ce,La,Nd,Y)2Fe2+Be2Si2O10
Fe Gadolinite-(Y)Y2Fe2+Be2Si2O10
Fe Cerite-(Ce)(Ce,Ca)9(Mg,Fe)(SiO4)3(HSiO4)4(OH)3
Fe Rowlandite-(Y)(Y,Ce)4Fe2+(Si2O7)2F2 (?)
YYttrium
Y Synchysite-(Y)CaY(CO3)2F
Y Fluorite (var: Yttrofluorite)(Ca1-xYx)F2+x where 0.05< x <0.3
Y Thalénite-(Y)Y3Si3O10F
Y Xenotime-(Y)Y(PO4)
Y Gadolinite-(Ce)(Ce,La,Nd,Y)2Fe2+Be2Si2O10
Y Gadolinite-(Y)Y2Fe2+Be2Si2O10
Y Fergusonite-(Y)YNbO4
Y Kainosite-(Y)Ca2(Y,Ce)2(Si4O12)(CO3) · H2O
Y Rowlandite-(Y)(Y,Ce)4Fe2+(Si2O7)2F2 (?)
ZrZirconium
Zr ZirconZr(SiO4)
Zr Zircon (var: Cyrtolite)Zr[(SiO4),(OH)4]
NbNiobium
Nb Fergusonite-(Y)YNbO4
LaLanthanum
La Gadolinite-(Ce)(Ce,La,Nd,Y)2Fe2+Be2Si2O10
CeCerium
Ce Allanite-(Ce){CaCe}{Al2Fe2+}(Si2O7)(SiO4)O(OH)
Ce Gadolinite-(Ce)(Ce,La,Nd,Y)2Fe2+Be2Si2O10
Ce Cerite-(Ce)(Ce,Ca)9(Mg,Fe)(SiO4)3(HSiO4)4(OH)3
Ce Rowlandite-(Y)(Y,Ce)4Fe2+(Si2O7)2F2 (?)
NdNeodymium
Nd Gadolinite-(Ce)(Ce,La,Nd,Y)2Fe2+Be2Si2O10
TaTantalum
Ta Microlite GroupA2-mTa2X6-wZ-n
ThThorium
Th ThoriteTh(SiO4)

Regional Geology

This geological map and associated information on rock units at or nearby to the coordinates given for this locality is based on relatively small scale geological maps provided by various national Geological Surveys. This does not necessarily represent the complete geology at this locality but it gives a background for the region in which it is found.

Click on geological units on the map for more information. Click here to view full-screen map on Macrostrat.org

Mesoproterozoic
1000 - 1600 Ma



ID: 2442375
Pikes Peak Granite

Age: Mesoproterozoic (1000 - 1600 Ma)

Stratigraphic Name: Pikes Peak Granite

Description: White to orange-pink biotitic or biotite-hornblende granite, granodiorite, and quartz-monzonite. Weathers to disaggregated mass of constituent minerals (called grus). Age about 1.04 billion years (Hedge and others, 1967, p. 551).

Reference: Trimble, D.E., M.N. Machette. Geologic Map of the Greater Denver Area, Front Range Urban Corridor, Colorado. U.S. Geological Survey Geologic Investigations Series I-856-H. [64]

Mesoproterozoic
1000 - 1600 Ma



ID: 2975257
Rocks of Pikes Peak Batholith (1000-m.y. age group)

Age: Mesoproterozoic (1000 - 1600 Ma)

Stratigraphic Name: Pikes Peak Granite; Mount Rosa Granite; Windy Point Granite; Redskin Granite

Description: Includes Pikes Peak, Mount Rosa, Windy Point, and Redskin Granites and unnamed rocks

Comments: Original map source: Green, G.N., 1992, The Digital Geologic Map of Colorado in ARC/INFO Format: U.S. Geological Survey Open-File Report 92-0507, 9 p., scale 1:500,000.

Lithology: Major:{granite,alkali feldspar granite}, Minor:{quartz monzonite}

Reference: Horton, J.D., C.A. San Juan, and D.B. Stoeser. The State Geologic Map Compilation (SGMC) geodatabase of the conterminous United States. doi: 10.3133/ds1052. U.S. Geological Survey Data Series 1052. [133]

Paleoproterozoic
1600 - 2500 Ma



ID: 3186950
Paleoproterozoic crystalline metamorphic rocks

Age: Proterozoic (1600 - 2500 Ma)

Lithology: Orthogneiss/paragneiss

Reference: Chorlton, L.B. Generalized geology of the world: bedrock domains and major faults in GIS format: a small-scale world geology map with an extended geological attribute database. doi: 10.4095/223767. Geological Survey of Canada, Open File 5529. [154]

Data and map coding provided by Macrostrat.org, used under Creative Commons Attribution 4.0 License

References

Sort by

Year (asc) Year (desc) Author (A-Z) Author (Z-A)
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).
Rocks & Minerals (1990) 65: 456.
Eckels, E.B. (1997) Minerals of Colorado.
Rare-Earth Pegmatites of the South Platte District, Colorado. Colorado Geological Survey Res. Series 11.


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