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Badu Hill quarry, Llano, Llano County, Texas, USAi
Regional Level Types
Badu Hill quarryPegmatite
LlanoCity
Llano CountyCounty
TexasState
USACountry

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Latitude & Longitude (WGS84):
30° 43' 26'' North , 98° 28' 31'' West
Latitude & Longitude (decimal):
30.72410,-98.47533
GeoHash:
G#: 9v3yz1hky
GRN:
N21W61
Type:
Pegmatite
KΓΆppen climate type:
Cfa : Humid subtropical climate
Nearest Settlements:
PlacePopulationDistance
Buchanan Dam1,519 (2011)4.6km
Kingsland6,030 (2011)8.0km
Buchanan Lake Village692 (2011)14.3km
Highland Haven452 (2017)15.0km
Sunrise Beach Village731 (2017)15.2km
Mindat Locality ID:
42294
Long-form identifier:
mindat:1:2:42294:0
GUID (UUID V4):
fbe07b45-5604-4321-9b3a-9a32a1625ddf
Other/historical names associated with this locality:
Badu Hill pegmatite; Badu Feldspar Deposit; Badu Hill mine


A Feldspar-REE-U-Th-Co-Au-Ag-Cu-Pb-Ti-As-Gd-Zr-W pegmatite occurrence/mine located 1 mile N of Beverly, 5 miles N25W of Kingsland and 13 miles E of Llano, SW of Buchanan Dam, on private land. Directions: 2.3 miles W of Texas highway 261 on Texas highway 16, then 0.8 mile S. Discovered in 1936 by Tillie Badu Moss. The USGS MRDS database accuracy for this locality is not presented.

A pegmatite REE deposit (Mineral occurrence model information: Model code: 38; USGS model code: 13e; Deposit model name: Feldspar contained in pegmatites), hosted in pegmatite. The ore body is 18.29 meters thick, 106.68 meters wide and 213.36 meters long and has a depth-to-top of 0 meters. Associated rocks include Neoproterozoic marble and Packsaddle Schist. Local rocks include the Precambrian (Proterozoic) Town Mountain Granite.

Workings include surface openings comprised of a quarrying operation with a 15 foot high quarry wall, overall length of 60.96 meters and an overall width of 21.34 meters. 3 holes were drilled and 6 test p[its dug by the U.S.; Bureau of Mines in 1946.

Analytical data results: 63-69% SiO2, 19-20% Al2O3, 7-12% K2O, <0.15% Fe2O3, 0.02-0.05% MgO, 0.06-0.6 CaO, 3-4% Na2O, 0.13% P2O5.

Reserve/resources data: This deposit is known to extend 28 to 45 feet below the bottom of the 15 foot quarry wall (1946).

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Commodity List

This is a list of exploitable or exploited mineral commodities recorded at this locality.


Mineral List


39 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“˜ Acanthite
Formula: Ag2S
Description: Occurs in Sulfide-zones, along with Gold and Copper.
β“˜ Albite
Formula: Na(AlSi3O8)
β“˜ 'Allanite Group'
Formula: (A12+REE3+)(M13+M23+M32+)O[Si2O7][SiO4](OH)
β“˜ Anatase
Formula: TiO2
Description: Occurs in limonite matrix.
β“˜ Arsenopyrite
Formula: FeAsS
Description: Occurs with Pyrite, as dark-silver inclusions.
β“˜ Baryte
Formula: BaSO4
β“˜ Baryte var. Strontium-bearing Baryte
Formula: (Ba,Sr)SO4
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“˜ Bornite
Formula: Cu5FeS4
Description: Occurs as coatings on Quartz, and sulfide-dwelling Microcline.
β“˜ Chalcanthite
Formula: CuSO4 · 5H2O
Description: Efflorvescent deposits occur by a natural acid-pool.
β“˜ Chalcocite
Formula: Cu2S
Description: Occurs as coatings on quartz, and as MXLS in Limonite.
β“˜ Chalcopyrite
Formula: CuFeS2
Description: Occurs in Sulfide-zones, along with Copper.
β“˜ Churchite-(Y)
Formula: Y(PO4) · 2H2O
Description: Occurs as small sprays in sulfide zones.
β“˜ Cobaltite
Formula: CoAsS
Description: Small amounts found near the acid-pool.
β“˜ Copper
Formula: Cu
Description: Copper occurs along with gold in the sulfide zones.
β“˜ Diopside
Formula: CaMgSi2O6
References:
Franklin Roberts
β“˜ 'Fergusonite'
Description: Occurs as crystal inclusions in pyrite.
β“˜ Fluorite
Formula: CaF2
β“˜ 'Gadolinite'
β“˜ Galena
Formula: PbS
Description: Occurs with Pyrite.
β“˜ 'Garnet Group'
Formula: X3Z2(SiO4)3
β“˜ Goethite
Formula: Ξ±-Fe3+O(OH)
Description: Occurs in Fe-sulfide zones along with Limonite.
β“˜ Gold
Formula: Au
Description: Gold MXLS found in sulfide zones.
β“˜ Grossular
Formula: Ca3Al2(SiO4)3
β“˜ 'Gummite'
Colour: Vivid yellow
Description: Occurs as coatings in sulfide-zones, along with Uraninite
β“˜ Gypsum
Formula: CaSO4 · 2H2O
β“˜ Hematite
Formula: Fe2O3
β“˜ Jarosite
Formula: KFe3+3(SO4)2(OH)6
β“˜ Kaolinite
Formula: Al2(Si2O5)(OH)4
β“˜ 'Limonite'
β“˜ Melanterite
Formula: Fe2+(H2O)6SO4 · H2O
β“˜ Microcline
Formula: K(AlSi3O8)
β“˜ Muscovite
Formula: KAl2(AlSi3O10)(OH)2
β“˜ Pyrite
Formula: FeS2
β“˜ Quartz
Formula: SiO2
β“˜ Rutile
Formula: TiO2
β“˜ Samarskite-(Y) ?
Formula: YFe3+Nb2O8
β“˜ 'Scapolite'
β“˜ Scheelite
Formula: Ca(WO4)
β“˜ Silver
Formula: Ag
Description: Occurs in Sulfide-zones, along with Gold and Copper.
β“˜ Synchysite-(Y)
Formula: CaY(CO3)2F
β“˜ Thorite var. Thorogummite
Formula: (Th,U)(SiO4)1-x(OH)4x
β“˜ Titanite
Formula: CaTi(SiO4)O
β“˜ Torbernite
Formula: Cu(UO2)2(PO4)2 · 12H2O
Habit: Tabular
Colour: Green
Description: Small, green tabular crystals found in Cu-rich zones.
β“˜ 'Tourmaline'
Formula: AD3G6 (T6O18)(BO3)3X3Z
References:
Am Min 67:180
β“˜ Uraninite
Formula: UO2
Description: Occurs as MXLS in sulfide-zones. Pseudomorphs of Gummite and Thorogummite are seen.
β“˜ Uranophane
Formula: Ca(UO2)2(SiO3OH)2 · 5H2O
Description: Occurs as small tufts in sulfide zone.
β“˜ Vesuvianite
Formula: Ca19Fe3+Al4(Al6Mg2)(◻4)◻[Si2O7]4[(SiO4)10]O(OH)9
β“˜ Wollastonite
Formula: Ca3(Si3O9)
β“˜ Zircon
Formula: Zr(SiO4)

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
β“˜Copper1.AA.05Cu
β“˜Silver1.AA.05Ag
β“˜Gold1.AA.05Au
Group 2 - Sulphides and Sulfosalts
β“˜Chalcocite2.BA.05Cu2S
β“˜Bornite2.BA.15Cu5FeS4
β“˜Acanthite2.BA.35Ag2S
β“˜Chalcopyrite2.CB.10aCuFeS2
β“˜Galena2.CD.10PbS
β“˜Pyrite2.EB.05aFeS2
β“˜Arsenopyrite2.EB.20FeAsS
β“˜Cobaltite2.EB.25CoAsS
Group 3 - Halides
β“˜Fluorite3.AB.25CaF2
Group 4 - Oxides and Hydroxides
β“˜Goethite4.00.Ξ±-Fe3+O(OH)
β“˜Hematite4.CB.05Fe2O3
β“˜Quartz4.DA.05SiO2
β“˜Rutile4.DB.05TiO2
β“˜Samarskite-(Y) ?4.DB.25YFe3+Nb2O8
β“˜Anatase4.DD.05TiO2
β“˜Uraninite4.DL.05UO2
Group 5 - Nitrates and Carbonates
β“˜Synchysite-(Y)5.BD.20cCaY(CO3)2F
Group 7 - Sulphates, Chromates, Molybdates and Tungstates
β“˜Baryte
var. Strontium-bearing Baryte		7.AD.35(Ba,Sr)SO4
β“˜7.AD.35BaSO4
β“˜Jarosite7.BC.10KFe3+3(SO4)2(OH)6
β“˜Chalcanthite7.CB.20CuSO4 Β· 5H2O
β“˜Melanterite7.CB.35Fe2+(H2O)6SO4 Β· H2O
β“˜Gypsum7.CD.40CaSO4 Β· 2H2O
β“˜Scheelite7.GA.05Ca(WO4)
Group 8 - Phosphates, Arsenates and Vanadates
β“˜Churchite-(Y)8.CJ.50Y(PO4) Β· 2H2O
β“˜Torbernite8.EB.05Cu(UO2)2(PO4)2 Β· 12H2O
Group 9 - Silicates
β“˜Grossular9.AD.25Ca3Al2(SiO4)3
β“˜Zircon9.AD.30Zr(SiO4)
β“˜Thorite
var. Thorogummite		9.AD.30(Th,U)(SiO4)1-x(OH)4x
β“˜Titanite9.AG.15CaTi(SiO4)O
β“˜Uranophane9.AK.15Ca(UO2)2(SiO3OH)2 Β· 5H2O
β“˜Vesuvianite9.BG.35Ca19Fe3+Al4(Al6Mg2)(β—»4)β—»[Si2O7]4[(SiO4)10]O(OH)9
β“˜Diopside9.DA.15CaMgSi2O6
β“˜Wollastonite9.DG.05Ca3(Si3O9)
β“˜Muscovite9.EC.15KAl2(AlSi3O10)(OH)2
β“˜Kaolinite9.ED.05Al2(Si2O5)(OH)4
β“˜Microcline9.FA.30K(AlSi3O8)
β“˜Albite9.FA.35Na(AlSi3O8)
Unclassified
β“˜'Garnet Group'-X3Z2(SiO4)3
β“˜'Gadolinite'-
β“˜'Fergusonite'-
β“˜'Limonite'-
β“˜'Scapolite'-
β“˜'Tourmaline'-AD3G6 (T6O18)(BO3)3X3Z
β“˜'Gummite'-
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“˜'Allanite Group'-(A12+REE3+)(M13+M23+M32+)O[Si2O7][SiO4](OH)

List of minerals for each chemical element

HHydrogen
Hβ“˜ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Hβ“˜ ChalcanthiteCuSO4 · 5H2O
Hβ“˜ Churchite-(Y)Y(PO4) · 2H2O
Hβ“˜ GoethiteΞ±-Fe3+O(OH)
Hβ“˜ GypsumCaSO4 · 2H2O
Hβ“˜ JarositeKFe33+(SO4)2(OH)6
Hβ“˜ KaoliniteAl2(Si2O5)(OH)4
Hβ“˜ MelanteriteFe2+(H2O)6SO4 · H2O
Hβ“˜ MuscoviteKAl2(AlSi3O10)(OH)2
Hβ“˜ Thorite var. Thorogummite(Th,U)(SiO4)1-x(OH)4x
Hβ“˜ TorberniteCu(UO2)2(PO4)2 · 12H2O
Hβ“˜ UranophaneCa(UO2)2(SiO3OH)2 · 5H2O
Hβ“˜ VesuvianiteCa19Fe3+Al4(Al6Mg2)(◻4)◻[Si2O7]4[(SiO4)10]O(OH)9
Hβ“˜ Allanite Group(A12+REE3+)(M13+M23+M32+)O[Si2O7][SiO4](OH)
BBoron
Bβ“˜ TourmalineAD3G6 (T6O18)(BO3)3X3Z
CCarbon
Cβ“˜ BastnΓ€site(Ce/Nd/Y/REE)(CO3)F
Cβ“˜ Synchysite-(Y)CaY(CO3)2F
OOxygen
Oβ“˜ AlbiteNa(AlSi3O8)
Oβ“˜ AnataseTiO2
Oβ“˜ BaryteBaSO4
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“˜ ChalcanthiteCuSO4 · 5H2O
Oβ“˜ Churchite-(Y)Y(PO4) · 2H2O
Oβ“˜ DiopsideCaMgSi2O6
Oβ“˜ GoethiteΞ±-Fe3+O(OH)
Oβ“˜ GrossularCa3Al2(SiO4)3
Oβ“˜ GypsumCaSO4 · 2H2O
Oβ“˜ HematiteFe2O3
Oβ“˜ JarositeKFe33+(SO4)2(OH)6
Oβ“˜ KaoliniteAl2(Si2O5)(OH)4
Oβ“˜ MelanteriteFe2+(H2O)6SO4 · H2O
Oβ“˜ MicroclineK(AlSi3O8)
Oβ“˜ MuscoviteKAl2(AlSi3O10)(OH)2
Oβ“˜ QuartzSiO2
Oβ“˜ RutileTiO2
Oβ“˜ Samarskite-(Y)YFe3+Nb2O8
Oβ“˜ ScheeliteCa(WO4)
Oβ“˜ Synchysite-(Y)CaY(CO3)2F
Oβ“˜ Thorite var. Thorogummite(Th,U)(SiO4)1-x(OH)4x
Oβ“˜ TitaniteCaTi(SiO4)O
Oβ“˜ TorberniteCu(UO2)2(PO4)2 · 12H2O
Oβ“˜ TourmalineAD3G6 (T6O18)(BO3)3X3Z
Oβ“˜ UraniniteUO2
Oβ“˜ UranophaneCa(UO2)2(SiO3OH)2 · 5H2O
Oβ“˜ VesuvianiteCa19Fe3+Al4(Al6Mg2)(◻4)◻[Si2O7]4[(SiO4)10]O(OH)9
Oβ“˜ WollastoniteCa3(Si3O9)
Oβ“˜ ZirconZr(SiO4)
Oβ“˜ Garnet GroupX3Z2(SiO4)3
Oβ“˜ Baryte var. Strontium-bearing Baryte(Ba,Sr)SO4
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“˜ Synchysite-(Y)CaY(CO3)2F
NaSodium
Naβ“˜ AlbiteNa(AlSi3O8)
MgMagnesium
Mgβ“˜ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Mgβ“˜ DiopsideCaMgSi2O6
Mgβ“˜ VesuvianiteCa19Fe3+Al4(Al6Mg2)(◻4)◻[Si2O7]4[(SiO4)10]O(OH)9
AlAluminium
Alβ“˜ AlbiteNa(AlSi3O8)
Alβ“˜ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Alβ“˜ GrossularCa3Al2(SiO4)3
Alβ“˜ KaoliniteAl2(Si2O5)(OH)4
Alβ“˜ MicroclineK(AlSi3O8)
Alβ“˜ MuscoviteKAl2(AlSi3O10)(OH)2
Alβ“˜ VesuvianiteCa19Fe3+Al4(Al6Mg2)(◻4)◻[Si2O7]4[(SiO4)10]O(OH)9
SiSilicon
Siβ“˜ AlbiteNa(AlSi3O8)
Siβ“˜ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Siβ“˜ DiopsideCaMgSi2O6
Siβ“˜ GrossularCa3Al2(SiO4)3
Siβ“˜ KaoliniteAl2(Si2O5)(OH)4
Siβ“˜ MicroclineK(AlSi3O8)
Siβ“˜ MuscoviteKAl2(AlSi3O10)(OH)2
Siβ“˜ QuartzSiO2
Siβ“˜ Thorite var. Thorogummite(Th,U)(SiO4)1-x(OH)4x
Siβ“˜ TitaniteCaTi(SiO4)O
Siβ“˜ UranophaneCa(UO2)2(SiO3OH)2 · 5H2O
Siβ“˜ VesuvianiteCa19Fe3+Al4(Al6Mg2)(◻4)◻[Si2O7]4[(SiO4)10]O(OH)9
Siβ“˜ WollastoniteCa3(Si3O9)
Siβ“˜ ZirconZr(SiO4)
Siβ“˜ Garnet GroupX3Z2(SiO4)3
Siβ“˜ Allanite Group(A12+REE3+)(M13+M23+M32+)O[Si2O7][SiO4](OH)
PPhosphorus
Pβ“˜ Churchite-(Y)Y(PO4) · 2H2O
Pβ“˜ TorberniteCu(UO2)2(PO4)2 · 12H2O
SSulfur
Sβ“˜ AcanthiteAg2S
Sβ“˜ ArsenopyriteFeAsS
Sβ“˜ BaryteBaSO4
Sβ“˜ BorniteCu5FeS4
Sβ“˜ ChalcopyriteCuFeS2
Sβ“˜ ChalcanthiteCuSO4 · 5H2O
Sβ“˜ ChalcociteCu2S
Sβ“˜ CobaltiteCoAsS
Sβ“˜ GalenaPbS
Sβ“˜ GypsumCaSO4 · 2H2O
Sβ“˜ JarositeKFe33+(SO4)2(OH)6
Sβ“˜ MelanteriteFe2+(H2O)6SO4 · H2O
Sβ“˜ PyriteFeS2
Sβ“˜ Baryte var. Strontium-bearing Baryte(Ba,Sr)SO4
KPotassium
Kβ“˜ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Kβ“˜ JarositeKFe33+(SO4)2(OH)6
Kβ“˜ MicroclineK(AlSi3O8)
Kβ“˜ MuscoviteKAl2(AlSi3O10)(OH)2
CaCalcium
Caβ“˜ DiopsideCaMgSi2O6
Caβ“˜ FluoriteCaF2
Caβ“˜ GrossularCa3Al2(SiO4)3
Caβ“˜ GypsumCaSO4 · 2H2O
Caβ“˜ ScheeliteCa(WO4)
Caβ“˜ Synchysite-(Y)CaY(CO3)2F
Caβ“˜ TitaniteCaTi(SiO4)O
Caβ“˜ UranophaneCa(UO2)2(SiO3OH)2 · 5H2O
Caβ“˜ VesuvianiteCa19Fe3+Al4(Al6Mg2)(◻4)◻[Si2O7]4[(SiO4)10]O(OH)9
Caβ“˜ WollastoniteCa3(Si3O9)
TiTitanium
Tiβ“˜ AnataseTiO2
Tiβ“˜ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Tiβ“˜ RutileTiO2
Tiβ“˜ TitaniteCaTi(SiO4)O
FeIron
Feβ“˜ ArsenopyriteFeAsS
Feβ“˜ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Feβ“˜ BorniteCu5FeS4
Feβ“˜ ChalcopyriteCuFeS2
Feβ“˜ GoethiteΞ±-Fe3+O(OH)
Feβ“˜ HematiteFe2O3
Feβ“˜ JarositeKFe33+(SO4)2(OH)6
Feβ“˜ MelanteriteFe2+(H2O)6SO4 · H2O
Feβ“˜ PyriteFeS2
Feβ“˜ Samarskite-(Y)YFe3+Nb2O8
Feβ“˜ VesuvianiteCa19Fe3+Al4(Al6Mg2)(◻4)◻[Si2O7]4[(SiO4)10]O(OH)9
CoCobalt
Coβ“˜ CobaltiteCoAsS
CuCopper
Cuβ“˜ BorniteCu5FeS4
Cuβ“˜ ChalcopyriteCuFeS2
Cuβ“˜ ChalcanthiteCuSO4 · 5H2O
Cuβ“˜ ChalcociteCu2S
Cuβ“˜ CopperCu
Cuβ“˜ TorberniteCu(UO2)2(PO4)2 · 12H2O
AsArsenic
Asβ“˜ ArsenopyriteFeAsS
Asβ“˜ CobaltiteCoAsS
SrStrontium
Srβ“˜ Baryte var. Strontium-bearing Baryte(Ba,Sr)SO4
YYttrium
Yβ“˜ BastnΓ€site(Ce/Nd/Y/REE)(CO3)F
Yβ“˜ Churchite-(Y)Y(PO4) · 2H2O
Yβ“˜ Samarskite-(Y)YFe3+Nb2O8
Yβ“˜ Synchysite-(Y)CaY(CO3)2F
ZrZirconium
Zrβ“˜ ZirconZr(SiO4)
NbNiobium
Nbβ“˜ Samarskite-(Y)YFe3+Nb2O8
AgSilver
Agβ“˜ AcanthiteAg2S
Agβ“˜ SilverAg
BaBarium
Baβ“˜ BaryteBaSO4
Baβ“˜ Baryte var. Strontium-bearing Baryte(Ba,Sr)SO4
CeCerium
Ceβ“˜ BastnΓ€site(Ce/Nd/Y/REE)(CO3)F
NdNeodymium
Ndβ“˜ BastnΓ€site(Ce/Nd/Y/REE)(CO3)F
WTungsten
Wβ“˜ ScheeliteCa(WO4)
AuGold
Auβ“˜ GoldAu
PbLead
Pbβ“˜ GalenaPbS
ThThorium
Thβ“˜ Thorite var. Thorogummite(Th,U)(SiO4)1-x(OH)4x
UUranium
Uβ“˜ Thorite var. Thorogummite(Th,U)(SiO4)1-x(OH)4x
Uβ“˜ TorberniteCu(UO2)2(PO4)2 · 12H2O
Uβ“˜ UraniniteUO2
Uβ“˜ UranophaneCa(UO2)2(SiO3OH)2 · 5H2O

Other Databases

Link to USGS MRDS:10065153

Other Regions, Features and Areas containing this locality

North America PlateTectonic Plate

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

USGS MRDS ID #TC40188.
Chelf, C.R. (1942) A New Feldspar Deposit in Llano County, Texas. Texas Bureau of Economic Geology MRSC 45, 5 pages.
Barnes, V.E. (1945) Feldspar in the Central Mineral Region of Texas. In: (1946) Texas Mineral Resources 1943, University of Texas Bureau Economic Geology Bulletin 4301, 390 pages, at 93-104.
Huseman, G.W., McMillan, W.D. (1947) Badu Feldspar Deposit, Llano County, Texas. U.S. Bureau of Mines Report of Investigation RI 4102, 11 pages.
Barnes, V.E. (1976) Geology of the Kingsland Quadrangle, Llano and Burnet Counties, Texas. Texas Bureau of Economic Geology GQ 41, 25 pages.
Brown, G.E.Jnr. (1982) The mineralogy of pegmatites. American Mineralogist, 67:2, 180-189.
Smith, Arthur E. (1991) Texas Mineral Locality Index. Rocks & Minerals, 66 (3) 196-224 doi:10.1080/00357529.1991.11761622
(2005) Mineral Resources Data System (MRDS), US Geological Survey.
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