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Petrick pegmatite, Kingsland Granite Company Quarry (Petrick Quarry), Llano County, Texas, USAi
Regional Level Types
Petrick pegmatitePegmatite
Kingsland Granite Company Quarry (Petrick Quarry)Quarry
Llano CountyCounty
TexasState
USACountry

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Type:
Pegmatite
Mindat Locality ID:
107388
Long-form identifier:
mindat:1:2:107388:4
GUID (UUID V4):
daf78b21-100e-44ba-857c-938bc60ac4a8


Located 1 mile W of the southern tip of Lake Buchanan.

Select Mineral List Type

StandardDetailedGalleryStrunzChemical Elements

Detailed Mineral List:

ⓘAlbite
Formula:Na(AlSi3O8)
ⓘ'Almandine-Spessartine Series'
ⓘ'Amphibole Supergroup'
Formula:AB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
ⓘArsenopyrite
Formula:FeAsS
ⓘ'Bastnäsite'
Formula:(Ce/Nd/Y/REE)(CO3)F
ⓘBehoite
Formula:Be(OH)2
Habit: Amorphous, chalky
Colour: White, Pinkish-White
Fluorescence: None
Description: Occurs as alteration coatings on gadolinite. Initial SEM-EDS analysis indicated a substantial beryllium carbonate content, probably due to reaction with atmospheric carbon dioxide.
ⓘ'Biotite'
Formula:K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
ⓘBritholite-(Y)
Formula:(Y,Ca)5(SiO4)3OH
ⓘCalcite
Formula:CaCO3
Fluorescence: Pale Green (SW)
ⓘChalcopyrite
Formula:CuFeS2
ⓘ'Chlorite Group'
ⓘ'Fergusonite'
ⓘFergusonite-(Y)
Formula:YNbO4
Habit: metamict
Colour: olive-drab green with metallic sheen on fracture surfaces
Fluorescence: none
Description: Commonly found at the outer margins of the pegmatite as columnar metamict crystals having a square cross-section. Moderately radioactive.
✪Fluorapatite
Formula:Ca5(PO4)3F
Habit: Hexagonal
Colour: Green, Tan
Fluorescence: Burnt Orange, Green
Description: Weathered crystals fluoresce burnt-orange. Vug micro crystals are green and gemmy with a brilliant green SW fluorescence.
ⓘFluorite
Formula:CaF2
Habit: massive
Colour: pale green, lavender, yellow, pink, purple
Fluorescence: blue-green (SW)
Description: Highly phosphorescent, thermoluminescent, triboluminescent
✪'Gadolinite'
Habit: Amorphous, metamict
Colour: Greenish-Black
Fluorescence: None
Description: This material is actually transparent very dark green. It also displays an unusually high paramagnetism and can be picked up by a Nd-Fe-B "supermagnet".
ⓘGold ?
Formula:Au
ⓘGraphite
Formula:C
Description: Displays pyrolitic properties
ⓘ'Gummite'
Habit: amorphous
Colour: yellow, orange
Fluorescence: weak green
Description: Occurs as alteration coatings on uranium-enriched pods of gadolinite and fergusonite
ⓘHematite
Formula:Fe2O3
ⓘJarosite
Formula:KFe3+3(SO4)2(OH)6
ⓘMagnetite
Formula:Fe2+Fe3+2O4
ⓘMarcasite
Formula:FeS2
✪Microcline
Formula:K(AlSi3O8)
Fluorescence: Vermillion-red (SW)
Description: Crystals in pegmatite occur up to 40 cm, sometimes intergrown with orthoclase. These intergrowths display a bright blue schiller that when cabbed displays a blue "cat's eye" effect.
✪Molybdenite
Formula:MoS2
Habit: Foliated books and 5-15 mm thick veins in decomposed granite
Colour: Lustrous metallic bluish gray
Fluorescence: None
ⓘMuscovite
Formula:KAl2(AlSi3O10)(OH)2
ⓘOpal
Formula:SiO2 · nH2O
ⓘOpal var. Opal-AN
Formula:SiO2 · nH2O
Habit: Thin coatings on quartz and microcline, glassy blebs in vugs amorphous)
Colour: transparent very pale green
Fluorescence: Strikingly brilliant green, even visible in overcast daylight.
Description: Dazzling green fluorescence (SW) especially beautiful when coating microcline with its vermillion red fluorescence.
✪Powellite
Formula:Ca(MoO4)
Colour: Cream White
Fluorescence: Lemon Yellow (SW)
Description: Found as crystalline masses interspersed with molybdenite in blocky microcline
ⓘPyrite
Formula:FeS2
ⓘQuartz
Formula:SiO2
ⓘQuartz var. Milky Quartz
Formula:SiO2
ⓘQuartz var. Smoky Quartz
Formula:SiO2
ⓘRutile
Formula:TiO2
ⓘSamarskite-(Y)
Formula:YFe3+Nb2O8
ⓘSanidine
Formula:K(AlSi3O8)
ⓘTengerite-(Y) ?
Formula:Y2(CO3)3 · 2-3H2O
Description: No data.
ⓘThorite var. Thorogummite
Formula:(Th,U)(SiO4)1-x(OH)4x
Habit: amorphous
Colour: brick-red
Fluorescence: none
Description: Occurs with beohite as a brick-red alteration coating on gadolinite.
ⓘUraninite
Formula:UO2
ⓘZircon
Formula:Zr(SiO4)
✪Zircon var. Cyrtolite
Formula:Zr[(SiO4),(OH)4]
Habit: Tetragonal-Bipyramidal with curved faces
Colour: Reddish-Brown
Fluorescence: None
Description: Commonly found between biotite laminae, radioactive

Gallery:

K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2ⓘ'Biotite'
CaF2ⓘFluorite
ⓘ'Gadolinite'
MoS2ⓘMolybdenite

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
ⓘGold ?1.AA.05Au
ⓘGraphite1.CB.05aC
Group 2 - Sulphides and Sulfosalts
ⓘChalcopyrite2.CB.10aCuFeS2
ⓘMolybdenite2.EA.30MoS2
ⓘPyrite2.EB.05aFeS2
ⓘMarcasite2.EB.10aFeS2
ⓘArsenopyrite2.EB.20FeAsS
Group 3 - Halides
ⓘFluorite3.AB.25CaF2
Group 4 - Oxides and Hydroxides
ⓘMagnetite4.BB.05Fe2+Fe3+2O4
ⓘHematite4.CB.05Fe2O3
ⓘQuartz4.DA.05SiO2
ⓘvar. Smoky Quartz4.DA.05SiO2
ⓘvar. Milky Quartz4.DA.05SiO2
ⓘOpal
var. Opal-AN		4.DA.10SiO2 · nH2O
ⓘ4.DA.10SiO2 · nH2O
ⓘRutile4.DB.05TiO2
ⓘSamarskite-(Y)4.DB.25YFe3+Nb2O8
ⓘUraninite4.DL.05UO2
ⓘBehoite4.FA.05aBe(OH)2
Group 5 - Nitrates and Carbonates
ⓘCalcite5.AB.05CaCO3
ⓘTengerite-(Y) ?5.CC.10Y2(CO3)3 · 2-3H2O
Group 7 - Sulphates, Chromates, Molybdates and Tungstates
ⓘJarosite7.BC.10KFe3+3(SO4)2(OH)6
ⓘFergusonite-(Y)7.GA.05YNbO4
ⓘPowellite7.GA.05Ca(MoO4)
Group 8 - Phosphates, Arsenates and Vanadates
ⓘFluorapatite8.BN.05Ca5(PO4)3F
Group 9 - Silicates
ⓘThorite
var. Thorogummite		9.AD.30(Th,U)(SiO4)1-x(OH)4x
ⓘZircon9.AD.30Zr(SiO4)
ⓘvar. Cyrtolite9.AD.30Zr[(SiO4),(OH)4]
ⓘBritholite-(Y)9.AH.25(Y,Ca)5(SiO4)3OH
ⓘMuscovite9.EC.15KAl2(AlSi3O10)(OH)2
ⓘMicrocline9.FA.30K(AlSi3O8)
ⓘSanidine9.FA.30K(AlSi3O8)
ⓘAlbite9.FA.35Na(AlSi3O8)
Unclassified
ⓘ'Amphibole Supergroup'-AB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
ⓘ'Bastnäsite'-(Ce/Nd/Y/REE)(CO3)F
ⓘ'Biotite'-K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
ⓘ'Chlorite Group'-
ⓘ'Gummite'-
ⓘ'Almandine-Spessartine Series'-
ⓘ'Gadolinite'-
ⓘ'Fergusonite'-

List of minerals for each chemical element

HHydrogen
HⓘAmphibole SupergroupAB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
HⓘBehoiteBe(OH)2
HⓘBiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
HⓘBritholite-(Y)(Y,Ca)5(SiO4)3OH
HⓘOpal var.Opal-ANSiO2 · nH2O
HⓘJarositeKFe33+(SO4)2(OH)6
HⓘMuscoviteKAl2(AlSi3O10)(OH)2
HⓘOpalSiO2 · nH2O
HⓘTengerite-(Y)Y2(CO3)3 · 2-3H2O
HⓘThorite var.Thorogummite(Th,U)(SiO4)1-x(OH)4x
HⓘZircon var.CyrtoliteZr[(SiO4),(OH)4]
BeBeryllium
BeⓘBehoiteBe(OH)2
CCarbon
CⓘBastnäsite(Ce/Nd/Y/REE)(CO3)F
CⓘCalciteCaCO3
CⓘGraphiteC
CⓘTengerite-(Y)Y2(CO3)3 · 2-3H2O
OOxygen
OⓘAlbiteNa(AlSi3O8)
OⓘAmphibole SupergroupAB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
OⓘBastnäsite(Ce/Nd/Y/REE)(CO3)F
OⓘBehoiteBe(OH)2
OⓘBiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
OⓘBritholite-(Y)(Y,Ca)5(SiO4)3OH
OⓘCalciteCaCO3
OⓘFergusonite-(Y)YNbO4
OⓘFluorapatiteCa5(PO4)3F
OⓘHematiteFe2O3
OⓘOpal var.Opal-ANSiO2 · nH2O
OⓘJarositeKFe33+(SO4)2(OH)6
OⓘMagnetiteFe2+Fe23+O4
OⓘMicroclineK(AlSi3O8)
OⓘMuscoviteKAl2(AlSi3O10)(OH)2
OⓘOpalSiO2 · nH2O
OⓘPowelliteCa(MoO4)
OⓘQuartzSiO2
OⓘRutileTiO2
OⓘSamarskite-(Y)YFe3+Nb2O8
OⓘSanidineK(AlSi3O8)
OⓘQuartz var.Smoky QuartzSiO2
OⓘTengerite-(Y)Y2(CO3)3 · 2-3H2O
OⓘThorite var.Thorogummite(Th,U)(SiO4)1-x(OH)4x
OⓘUraniniteUO2
OⓘZirconZr(SiO4)
OⓘQuartz var.Milky QuartzSiO2
OⓘZircon var.CyrtoliteZr[(SiO4),(OH)4]
FFluorine
FⓘAmphibole SupergroupAB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
FⓘBastnäsite(Ce/Nd/Y/REE)(CO3)F
FⓘBiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
FⓘFluorapatiteCa5(PO4)3F
FⓘFluoriteCaF2
NaSodium
NaⓘAlbiteNa(AlSi3O8)
MgMagnesium
MgⓘBiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
AlAluminium
AlⓘAlbiteNa(AlSi3O8)
AlⓘAmphibole SupergroupAB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
AlⓘBiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
AlⓘMicroclineK(AlSi3O8)
AlⓘMuscoviteKAl2(AlSi3O10)(OH)2
AlⓘSanidineK(AlSi3O8)
SiSilicon
SiⓘAlbiteNa(AlSi3O8)
SiⓘAmphibole SupergroupAB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
SiⓘBiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
SiⓘBritholite-(Y)(Y,Ca)5(SiO4)3OH
SiⓘOpal var.Opal-ANSiO2 · nH2O
SiⓘMicroclineK(AlSi3O8)
SiⓘMuscoviteKAl2(AlSi3O10)(OH)2
SiⓘOpalSiO2 · nH2O
SiⓘQuartzSiO2
SiⓘSanidineK(AlSi3O8)
SiⓘQuartz var.Smoky QuartzSiO2
SiⓘThorite var.Thorogummite(Th,U)(SiO4)1-x(OH)4x
SiⓘZirconZr(SiO4)
SiⓘQuartz var.Milky QuartzSiO2
SiⓘZircon var.CyrtoliteZr[(SiO4),(OH)4]
PPhosphorus
PⓘFluorapatiteCa5(PO4)3F
SSulfur
SⓘArsenopyriteFeAsS
SⓘChalcopyriteCuFeS2
SⓘJarositeKFe33+(SO4)2(OH)6
SⓘMarcasiteFeS2
SⓘMolybdeniteMoS2
SⓘPyriteFeS2
ClChlorine
ClⓘAmphibole SupergroupAB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
KPotassium
KⓘBiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
KⓘJarositeKFe33+(SO4)2(OH)6
KⓘMicroclineK(AlSi3O8)
KⓘMuscoviteKAl2(AlSi3O10)(OH)2
KⓘSanidineK(AlSi3O8)
CaCalcium
CaⓘBritholite-(Y)(Y,Ca)5(SiO4)3OH
CaⓘCalciteCaCO3
CaⓘFluorapatiteCa5(PO4)3F
CaⓘFluoriteCaF2
CaⓘPowelliteCa(MoO4)
TiTitanium
TiⓘAmphibole SupergroupAB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
TiⓘBiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
TiⓘRutileTiO2
FeIron
FeⓘArsenopyriteFeAsS
FeⓘBiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
FeⓘChalcopyriteCuFeS2
FeⓘHematiteFe2O3
FeⓘJarositeKFe33+(SO4)2(OH)6
FeⓘMagnetiteFe2+Fe23+O4
FeⓘMarcasiteFeS2
FeⓘPyriteFeS2
FeⓘSamarskite-(Y)YFe3+Nb2O8
CuCopper
CuⓘChalcopyriteCuFeS2
AsArsenic
AsⓘArsenopyriteFeAsS
YYttrium
YⓘBastnäsite(Ce/Nd/Y/REE)(CO3)F
YⓘBritholite-(Y)(Y,Ca)5(SiO4)3OH
YⓘFergusonite-(Y)YNbO4
YⓘSamarskite-(Y)YFe3+Nb2O8
YⓘTengerite-(Y)Y2(CO3)3 · 2-3H2O
ZrZirconium
ZrⓘZirconZr(SiO4)
ZrⓘZircon var.CyrtoliteZr[(SiO4),(OH)4]
NbNiobium
NbⓘFergusonite-(Y)YNbO4
NbⓘSamarskite-(Y)YFe3+Nb2O8
MoMolybdenum
MoⓘMolybdeniteMoS2
MoⓘPowelliteCa(MoO4)
CeCerium
CeⓘBastnäsite(Ce/Nd/Y/REE)(CO3)F
NdNeodymium
NdⓘBastnäsite(Ce/Nd/Y/REE)(CO3)F
AuGold
AuⓘGoldAu
ThThorium
ThⓘThorite var.Thorogummite(Th,U)(SiO4)1-x(OH)4x
UUranium
UⓘThorite var.Thorogummite(Th,U)(SiO4)1-x(OH)4x
UⓘUraniniteUO2

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References

Smith, Arthur, Frank Roberts, Denise Bicknell (2008), Mineral News: 24(1): 6-7.
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