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Clear Creek pegmatite, Burnet Co., Texas, USA

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Key
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Location is approximate, estimate based on other nearby localities.
 
Latitude & Longitude (WGS84): 30° North , 98° West (est.)
Margin of Error:~41km
Locality type:Pegmatite
Köppen climate type:Cfa : Humid subtropical climate


A REE pegmatite occurrence located 1.5 miles E of Lake Buchanan, N of Clear Creek.



Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Mineral List


18 valid minerals. 1 erroneous literature entry.

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: Rocks & Minerals (1991) 66(3): 196-224.
'Allanite Group'
Formula: {A12+REE3+}{M3+2M32+}(Si2O7)(SiO4)O(OH)
Reference: Crook, Wilson W. III (1977) Texasite, a new mineral: the first example of a differentiated rare-earth species. American Mineralogist: 62: 1006-1008.; Rocks & Minerals (1991) 66(3): 196-224.
'Bastnäsite'
Reference: Crook, Wilson W. III (1977) Texasite, a new mineral: the first example of a differentiated rare-earth species. American Mineralogist: 62: 1006-1008.; Rocks & Minerals (1991) 66(3): 196-224.
Behoite
Formula: Be(OH)2
Reference: Crook, Wilson W. III (1977) Texasite, a new mineral: the first example of a differentiated rare-earth species. American Mineralogist: 62: 1006-1008.; Rocks & Minerals (1991) 66(3): 196-224.
'Biotite'
Reference: Rocks & Minerals (1991) 66(3): 196-224.
'Chlorite Group'
Reference: Rocks & Minerals (1991) 66(3): 196-224.
'Fergusonite'
Reference: Crook, Wilson W. III (1977) Texasite, a new mineral: the first example of a differentiated rare-earth species. American Mineralogist: 62: 1006-1008.; Rocks & Minerals (1991) 66(3): 196-224.
Fluorite
Formula: CaF2
Reference: Rocks & Minerals (1991) 66(3): 196-224.
Fluorite var: Yttrofluorite
Formula: (Ca1-xYx)F2+x where 0.05< x <0.3
Reference: Crook, Wilson W. III (1977) Texasite, a new mineral: the first example of a differentiated rare-earth species. American Mineralogist: 62: 1006-1008.
'Gadolinite'
Reference: Crook, Wilson W. III (1977) Texasite, a new mineral: the first example of a differentiated rare-earth species. American Mineralogist: 62: 1006-1008.; Rocks & Minerals (1991) 66(3): 196-224.
'Gummite'
Reference: Crook, Wilson W. III (1977) The Clear Creek pegmatite: a rare earth pegmatite in Burnett County, Texas. Mineralogical Record, 8 (2): 88-90.
Hematite
Formula: Fe2O3
Reference: Rocks & Minerals (1991) 66(3): 196-224.
Ilmenite
Formula: Fe2+TiO3
Reference: Rocks & Minerals (1991) 66(3): 196-224.
Jarosite
Formula: KFe3+ 3(SO4)2(OH)6
Description: Crook (1977) mentions Jarosite as chlorine-bearing (selective replacement of hydroxyl by chlorine (from 0.08 to 5.3%) and/or fluorine-bearing (selective replacement of hydroxyl by fluorine by as much as 0.92%), "apparently representing a new solid-solution series in the alunite-jarosite family".
Reference: Crook, Wilson W. III (1977) Texasite, a new mineral: the first example of a differentiated rare-earth species. American Mineralogist: 62: 1006-1008.
Magnetite
Formula: Fe2+Fe3+2O4
Reference: Rocks & Minerals (1991) 66(3): 196-224.
Microcline
Formula: K(AlSi3O8)
Reference: Rocks & Minerals (1991) 66(3): 196-224.
'Pegmatite'
Reference: Crook, Wilson W. III (1977) Texasite, a new mineral: the first example of a differentiated rare-earth species. American Mineralogist: 62: 1006-1008.; U.S. Geological Survey (2005) Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
Polycrase-(Y)
Formula: Y(Ti,Nb)2(O,OH)6
Reference: Crook, Wilson W. III (1977) Texasite, a new mineral: the first example of a differentiated rare-earth species. American Mineralogist: 62: 1006-1008.
Quartz
Formula: SiO2
Reference: Crook, Wilson W. III (1977) The Clear Creek pegmatite: a rare earth pegmatite in Burnett County, Texas. Mineralogical Record, 8 (2): 88-90.
Rowlandite-(Y)
Formula: (Y,Ce)4Fe2+(Si2O7)2F2 (?)
Reference: Crook, Wilson W. III (1977) Texasite, a new mineral: the first example of a differentiated rare-earth species. American Mineralogist: 62: 1006-1008.; Anthony, Bideaux, Bladh, Nichols (xxx) Handbook of Mineralogy.
Samarskite-(Y)
Formula: (Y,Fe3+,Fe2+,U,Th,Ca)2(Nb,Ta)2O8
Reference: Crook, Wilson W. III (1977) Texasite, a new mineral: the first example of a differentiated rare-earth species. American Mineralogist: 62: 1006-1008.; Rocks & Minerals (1991) 66(3): 196-224.
Spessartine
Formula: Mn2+3Al2(SiO4)3
Reference: Crook, Wilson W. III (1977) The Clear Creek pegmatite: a rare earth pegmatite in Burnett County, Texas. Mineralogical Record, 8 (2): 88-90.
Tengerite-(Y)
Formula: Y2(CO3)3 · 2-3H2O
Reference: Crook, Wilson W. III (1977) Texasite, a new mineral: the first example of a differentiated rare-earth species. American Mineralogist: 62: 1006-1008.; Rocks & Minerals (1991) 66(3): 196-224.
'Texasite (of Crook)'
Formula: Pr2SO4O2
Description: Material described and submitted as new species to the IMA was synthetic (Peacor et al 1982).
Reference: Crook, Wilson W. III (1977) Texasite, a new mineral: the first example of a differentiated rare-earth species. American Mineralogist 62: 1006-1008.; Peacor, D.R., Simmons, W.B. Jr., Essene, E.J., and Heinrich, E.W. (1982) New data on discreditation of "texasite", "albrittonite", "cuproartinite", "cuprohydromagnesite", and "yttromicrolite", with corrected data on nickelbischofite, rowlandite, and yttrocrasite. American Mineralogist 67: 156-169.
Thalénite-(Y)
Formula: Y3Si3O10F
Reference: Rocks & Minerals (1991) 66(3): 196-224.
Uraninite
Formula: UO2
Reference: Crook, Wilson W. III (1977) Texasite, a new mineral: the first example of a differentiated rare-earth species. American Mineralogist: 62: 1006-1008.; Rocks & Minerals (1991) 66(3): 196-224.
Yttrialite-(Y)
Formula: (Y,Th)2Si2O7
Reference: Crook, Wilson W. III (1977) Texasite, a new mineral: the first example of a differentiated rare-earth species. American Mineralogist: 62: 1006-1008.; Crook, Wilson W. III (1977) The Clear Creek pegmatite: a rare earth pegmatite in Burnett County, Texas. Mineralogical Record, 8 (2): 88-90.
'Yttrocrasite-(Y)'
Formula: (Y,Th,Ca,U)(Ti,Fe)2(O,OH)6
Reference: Crook, Wilson W. III (1976) Yttrocrasite from central Texas. Mineralogical Record 7: 182-183.; Crook, Wilson W. III (1977) Texasite, a new mineral: the first example of a differentiated rare-earth species. American Mineralogist: 62: 1006-1008.
Zircon
Formula: Zr(SiO4)
Reference: Crook, Wilson W. III (1977) The Clear Creek pegmatite: a rare earth pegmatite in Burnett County, Texas. Mineralogical Record, 8 (2): 88-90.; Crook, Wilson W. III (1977) Texasite, a new mineral: the first example of a differentiated rare-earth species. American Mineralogist: 62: 1006-1008.;
Zircon var: Cyrtolite
Formula: Zr[(SiO4),(OH)4]
Reference: Crook, Wilson W. III (1977) The Clear Creek pegmatite: a rare earth pegmatite in Burnett County, Texas. Mineralogical Record, 8 (2): 88-90.; Crook, Wilson W. III (1977) Texasite, a new mineral: the first example of a differentiated rare-earth species. American Mineralogist: 62: 1006-1008.

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
'Behoite'4.FA.05aBe(OH)2
Hematite4.CB.05Fe2O3
Ilmenite4.CB.05Fe2+TiO3
Magnetite4.BB.05Fe2+Fe3+2O4
Polycrase-(Y)4.DG.05Y(Ti,Nb)2(O,OH)6
Quartz4.DA.05SiO2
Samarskite-(Y)4.DB.25(Y,Fe3+,Fe2+,U,Th,Ca)2(Nb,Ta)2O8
Uraninite4.DL.05UO2
Yttrocrasite-(Y)4.DG.05(Y,Th,Ca,U)(Ti,Fe)2(O,OH)6
Group 5 - Nitrates and Carbonates
Tengerite-(Y)5.CC.10Y2(CO3)3 · 2-3H2O
Group 7 - Sulphates, Chromates, Molybdates and Tungstates
Jarosite7.BC.10KFe3+ 3(SO4)2(OH)6
Group 9 - Silicates
'Albite'9.FA.35Na(AlSi3O8)
Microcline9.FA.30K(AlSi3O8)
Rowlandite-(Y)9.HG.20(Y,Ce)4Fe2+(Si2O7)2F2 (?)
Spessartine9.AD.25Mn2+3Al2(SiO4)3
Thalénite-(Y)9.BJ.20Y3Si3O10F
Yttrialite-(Y)9.BC.05(Y,Th)2Si2O7
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'-
'Chlorite Group'-
Fergusonite-
Gadolinite-
Gummite-
Pegmatite-
Texasite (of Crook) ?-Pr2SO4O2

List of minerals arranged by Dana 8th Edition classification

Group 4 - SIMPLE OXIDES
A2X3
Hematite4.3.1.2Fe2O3
Ilmenite4.3.5.1Fe2+TiO3
Group 5 - OXIDES CONTAINING URANIUM OR THORIUM
AXO2·xH2O
Uraninite5.1.1.1UO2
Group 6 - HYDROXIDES AND OXIDES CONTAINING HYDROXYL
X(OH)2
Behoite6.2.2.1Be(OH)2
Group 7 - MULTIPLE OXIDES
AB2X4
Magnetite7.2.2.3Fe2+Fe3+2O4
Group 8 - MULTIPLE OXIDES CONTAINING NIOBIUM,TANTALUM OR TITANIUM
ABO4
Samarskite-(Y)8.1.11.1(Y,Fe3+,Fe2+,U,Th,Ca)2(Nb,Ta)2O8
AB2O6
Polycrase-(Y)8.3.8.1Y(Ti,Nb)2(O,OH)6
'Yttrocrasite-(Y)'8.3.8.4(Y,Th,Ca,U)(Ti,Fe)2(O,OH)6
Group 9 - NORMAL HALIDES
AX2
Fluorite9.2.1.1CaF2
Group 15 - HYDRATED NORMAL CARBONATES
AmBn(XO3)p·xH2O, with (m+n):p < 1:1
Tengerite-(Y)15.4.3.1Y2(CO3)3 · 2-3H2O
Group 30 - ANHYDROUS SULFATES CONTAINING HYDROXYL OR HALOGEN
(AB)2(XO4)Zq
Jarosite30.2.5.1KFe3+ 3(SO4)2(OH)6
Group 51 - NESOSILICATES Insular SiO4 Groups Only
Insular SiO4 Groups Only with cations in [6] and >[6] coordination
Spessartine51.4.3a.3Mn2+3Al2(SiO4)3
Insular SiO4 Groups Only with cations in >[6] coordination
Zircon51.5.2.1Zr(SiO4)
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
Yttrialite-(Y)55.2.1b.3(Y,Th)2Si2O7
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, Rocks, etc.
'Allanite Group'-{A12+REE3+}{M3+2M32+}(Si2O7)(SiO4)O(OH)
'Bastnäsite'-
'Biotite'-
'Chlorite Group'-
'Fergusonite'-
Fluorite
var: Yttrofluorite
-(Ca1-xYx)F2+x where 0.05< x <0.3
'Gadolinite'-
'Gummite'-
'Pegmatite'-
'Texasite (of Crook)' ?-Pr2SO4O2
Zircon
var: Cyrtolite
-Zr[(SiO4),(OH)4]

List of minerals for each chemical element

HHydrogen
H Allanite Group{A12+REE3+}{M23+M32+}(Si2O7)(SiO4)O(OH)
H BehoiteBe(OH)2
H Zircon (var: Cyrtolite)Zr[(SiO4),(OH)4]
H JarositeKFe3+ 3(SO4)2(OH)6
H Polycrase-(Y)Y(Ti,Nb)2(O,OH)6
H Tengerite-(Y)Y2(CO3)3 · 2-3H2O
H Yttrocrasite-(Y)(Y,Th,Ca,U)(Ti,Fe)2(O,OH)6
BeBeryllium
Be BehoiteBe(OH)2
CCarbon
C Tengerite-(Y)Y2(CO3)3 · 2-3H2O
OOxygen
O AlbiteNa(AlSi3O8)
O Allanite Group{A12+REE3+}{M23+M32+}(Si2O7)(SiO4)O(OH)
O BehoiteBe(OH)2
O Zircon (var: Cyrtolite)Zr[(SiO4),(OH)4]
O HematiteFe2O3
O IlmeniteFe2+TiO3
O JarositeKFe3+ 3(SO4)2(OH)6
O MagnetiteFe2+Fe23+O4
O MicroclineK(AlSi3O8)
O Polycrase-(Y)Y(Ti,Nb)2(O,OH)6
O QuartzSiO2
O Rowlandite-(Y)(Y,Ce)4Fe2+(Si2O7)2F2 (?)
O Samarskite-(Y)(Y,Fe3+,Fe2+,U,Th,Ca)2(Nb,Ta)2O8
O SpessartineMn32+Al2(SiO4)3
O Tengerite-(Y)Y2(CO3)3 · 2-3H2O
O Texasite (of Crook)Pr2SO4O2
O Thalénite-(Y)Y3Si3O10F
O UraniniteUO2
O Yttrialite-(Y)(Y,Th)2Si2O7
O Yttrocrasite-(Y)(Y,Th,Ca,U)(Ti,Fe)2(O,OH)6
O ZirconZr(SiO4)
FFluorine
F FluoriteCaF2
F Rowlandite-(Y)(Y,Ce)4Fe2+(Si2O7)2F2 (?)
F Thalénite-(Y)Y3Si3O10F
F Fluorite (var: Yttrofluorite)(Ca1-xYx)F2+x where 0.05< x <0.3
NaSodium
Na AlbiteNa(AlSi3O8)
AlAluminium
Al AlbiteNa(AlSi3O8)
Al MicroclineK(AlSi3O8)
Al SpessartineMn32+Al2(SiO4)3
SiSilicon
Si AlbiteNa(AlSi3O8)
Si Allanite Group{A12+REE3+}{M23+M32+}(Si2O7)(SiO4)O(OH)
Si Zircon (var: Cyrtolite)Zr[(SiO4),(OH)4]
Si MicroclineK(AlSi3O8)
Si QuartzSiO2
Si Rowlandite-(Y)(Y,Ce)4Fe2+(Si2O7)2F2 (?)
Si SpessartineMn32+Al2(SiO4)3
Si Thalénite-(Y)Y3Si3O10F
Si Yttrialite-(Y)(Y,Th)2Si2O7
Si ZirconZr(SiO4)
SSulfur
S JarositeKFe3+ 3(SO4)2(OH)6
S Texasite (of Crook)Pr2SO4O2
KPotassium
K JarositeKFe3+ 3(SO4)2(OH)6
K MicroclineK(AlSi3O8)
CaCalcium
Ca FluoriteCaF2
Ca Samarskite-(Y)(Y,Fe3+,Fe2+,U,Th,Ca)2(Nb,Ta)2O8
Ca Yttrocrasite-(Y)(Y,Th,Ca,U)(Ti,Fe)2(O,OH)6
Ca Fluorite (var: Yttrofluorite)(Ca1-xYx)F2+x where 0.05< x <0.3
TiTitanium
Ti IlmeniteFe2+TiO3
Ti Polycrase-(Y)Y(Ti,Nb)2(O,OH)6
Ti Yttrocrasite-(Y)(Y,Th,Ca,U)(Ti,Fe)2(O,OH)6
MnManganese
Mn SpessartineMn32+Al2(SiO4)3
FeIron
Fe HematiteFe2O3
Fe IlmeniteFe2+TiO3
Fe JarositeKFe3+ 3(SO4)2(OH)6
Fe MagnetiteFe2+Fe23+O4
Fe Rowlandite-(Y)(Y,Ce)4Fe2+(Si2O7)2F2 (?)
Fe Samarskite-(Y)(Y,Fe3+,Fe2+,U,Th,Ca)2(Nb,Ta)2O8
Fe Yttrocrasite-(Y)(Y,Th,Ca,U)(Ti,Fe)2(O,OH)6
YYttrium
Y Polycrase-(Y)Y(Ti,Nb)2(O,OH)6
Y Rowlandite-(Y)(Y,Ce)4Fe2+(Si2O7)2F2 (?)
Y Samarskite-(Y)(Y,Fe3+,Fe2+,U,Th,Ca)2(Nb,Ta)2O8
Y Tengerite-(Y)Y2(CO3)3 · 2-3H2O
Y Thalénite-(Y)Y3Si3O10F
Y Yttrialite-(Y)(Y,Th)2Si2O7
Y Yttrocrasite-(Y)(Y,Th,Ca,U)(Ti,Fe)2(O,OH)6
Y Fluorite (var: Yttrofluorite)(Ca1-xYx)F2+x where 0.05< x <0.3
ZrZirconium
Zr Zircon (var: Cyrtolite)Zr[(SiO4),(OH)4]
Zr ZirconZr(SiO4)
NbNiobium
Nb Polycrase-(Y)Y(Ti,Nb)2(O,OH)6
Nb Samarskite-(Y)(Y,Fe3+,Fe2+,U,Th,Ca)2(Nb,Ta)2O8
CeCerium
Ce Rowlandite-(Y)(Y,Ce)4Fe2+(Si2O7)2F2 (?)
PrPraseodymium
Pr Texasite (of Crook)Pr2SO4O2
TaTantalum
Ta Samarskite-(Y)(Y,Fe3+,Fe2+,U,Th,Ca)2(Nb,Ta)2O8
ThThorium
Th Samarskite-(Y)(Y,Fe3+,Fe2+,U,Th,Ca)2(Nb,Ta)2O8
Th Yttrocrasite-(Y)(Y,Th,Ca,U)(Ti,Fe)2(O,OH)6
UUranium
U Samarskite-(Y)(Y,Fe3+,Fe2+,U,Th,Ca)2(Nb,Ta)2O8
U UraniniteUO2
U Yttrocrasite-(Y)(Y,Th,Ca,U)(Ti,Fe)2(O,OH)6

References

Sort by

Year (asc) Year (desc) Author (A-Z) Author (Z-A)
Crook, Wilson W. III (1977) Texasite, a new mineral: the first example of a differentiated rare-earth species. American Mineralogist: 62: 1006-1008.
Crook, Wilson W. III (1977) The Clear Creek pegmatite: a rare-earth pegmatite in Burnet County, Texas. Mineralogical Record: 8(2): 88-90.
Peacor, D.R., Simmons, W.B. Jr., Essene, E.J., and Heinrich, E.W. (1982) New data on discreditation of "texasite", "albrittonite", "cuproartinite", "cuprohydromagnesite", and "yttromicrolite", with corrected data on nickelbischofite, rowlandite, and yttrocrasite. American Mineralogist: 67: 156-169.
Rocks & Minerals (1991) 66(3): 196-224.


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