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Baringer Hill (Barringer Hill), Bluffton, Llano Co., Texas, USA
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List of minerals arranged by Dana 8th Edition classification
Group 2 - SULFIDES
AmXp, with m:p = 1:1
Sphalerite2.8.2.1ZnS
AmBnXp, with (m+n):p = 1:1
Chalcopyrite2.9.1.1CuFeS2
AmBnXp, with (m+n):p = 2:3
Stibnite ?2.11.2.1Sb2S3
AmBnXp, with (m+n):p = 1:2
Molybdenite2.12.10.1MoS2
Pyrite2.12.1.1FeS2
Group 4 - SIMPLE OXIDES
A2X3
Hematite4.3.1.2Fe2O3
Ilmenite4.3.5.1Fe2+TiO3
AX2
Cassiterite ?4.4.1.5SnO2
Rutile4.4.1.1TiO2
AX3
Molybdite4.5.1.1MoO3
Group 5 - OXIDES CONTAINING URANIUM OR THORIUM
AXO2·xH2O
Uraninite5.1.1.1UO2
Group 7 - MULTIPLE OXIDES
AB2X4
Magnetite7.2.2.3Fe2+Fe3+2O4
Group 8 - MULTIPLE OXIDES CONTAINING NIOBIUM,TANTALUM OR TITANIUM
ABO4
Fergusonite-(Y)8.1.1.1YNbO4
Samarskite-(Y) ?8.1.11.1(Y,Fe3+,Fe2+,U,Th,Ca)2(Nb,Ta)2O8
AB2O6
Polycrase-(Y)8.3.8.1(Y,U)(Ti,Nb)2O6
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
Tveitite-(Y)9.2.1.3(Y, Na)6Ca6Ca6F42
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 31 - HYDRATED SULFATES CONTAINING HYDROXYL OR HALOGEN
Miscellaneous
Copiapite31.10.5.1Fe2+Fe3+4(SO4)6(OH)2 · 20H2O
Group 40 - HYDRATED NORMAL PHOSPHATES,ARSENATES AND VANADATES
AB2(XO4)2·xH2O, containing (UO2)2+
Autunite40.2a.1.1Ca(UO2)2(PO4)2 · 11H2O
Group 48 - ANHYDROUS MOLYBDATES AND TUNGSTATES
AXO4
Powellite48.1.2.2Ca(MoO4)
Group 49 - HYDRATED MOLYBDATES AND TUNGSTATES
Hydrated Normal Molybdates and Tungstates
Ferrimolybdite49.2.1.1Fe2(MoO4)3 · nH2O
Group 51 - NESOSILICATES Insular SiO4 Groups Only
Insular SiO4 Groups Only with cations in >[6] coordination
Thorite51.5.2.3(Th,U)SiO4
'Thorogummite' (TL)51.5.2.5(Th,U)(SiO4)1-x(OH)4x
Zircon51.5.2.1ZrSiO4
Group 54 - NESOSILICATES Borosilicates and Some Beryllosilicates
Borosilicates and Some Beryllosilicates with B in [4] coordination
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) (TL)55.2.1b.1(Y,Ce)4Fe2+(Si2O7)2F2 (?)
Yttrialite-(Y) (TL)55.2.1b.3(Y,Th)2Si2O7
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)
Allanite-(La) ?58.2.1a.2{CaLa}{Al2Fe2+}(Si2O7)(SiO4)O(OH)
Allanite-(Y) ?58.2.1a.3{CaY}{Al2Fe2+}(Si2O7)(SiO4)O(OH)
Vesuvianite58.2.4.1(Ca,Na,☐)19(Al,Mg,Fe3+)13(☐,B,Al,Fe3+)5(Si2O7)4(SiO4)10(OH,F,O)10
Group 71 - PHYLLOSILICATES Sheets of Six-Membered Rings
Sheets of 6-membered rings with 2:1 layers
Phlogopite71.2.2b.1KMg3(AlSi3O10)(OH,F)2
Group 75 - TECTOSILICATES Si Tetrahedral Frameworks
Si Tetrahedral Frameworks - SiO2 with [4] coordinated Si
Quartz75.1.3.1SiO2
Si Tetrahedral Frameworks - SiO2 with H2O and organics
Opal75.2.1.1SiO2 · nH2O
Group 76 - TECTOSILICATES Al-Si Framework
Al-Si Framework with Al-Si frameworks
Albite76.1.3.1NaAlSi3O8
Microcline76.1.1.5KAlSi3O8
Unclassified Minerals
'Bastnäsite'-
'Biotite'-
'Columbite'-(Fe,Mn)(Nb,Ta)2O6
'Fergusonite'-
Fluorite
var: Chlorophane
-CaF2
'Gadolinite'-
'Gummite'-
'Lanthanite'-
Lepidolite ?-
'Lepidomelane'-
'Perthite'-
Quartz
var: Amethyst
-SiO2
var: Milky Quartz-SiO2
var: Smoky Quartz-SiO2
Zircon
var: Cyrtolite
-Zr[(SiO4),(OH)4]


53 entries listed. 43 valid minerals.

References

Hidden, W. E. and J. B. Mackintosh (1889), A description of several yttria and thoria minerals from Llano County, Texas. American Journal of Science, 3rd series: 38: 474–486.

Dana, E.S. (1892) System of Mineralogy, 6th. Edition, New York: 1082.

Emmons, Samuel Franklin and Eckel, Edwin C. (1905), Contributions to Economic Geology, 1904.

USGS Bulletin 340 (1908): 286-294.

American Mineralogist (1932): 17: 381-390.

Marble, John Putnam (1940), Allanite from Barringer Hill, Llano County, Texas. American Mineralogist: 25: 168-173.

Palache, Charles, Harry Berman & Clifford Frondel (1944), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana Yale University 1837-1892, Volume I: Elements, Sulfides, Sulfosalts, Oxides. John Wiley and Sons, Inc., New York. 7th edition, revised and enlarged, 834pp.: 761.

Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II: 1081.

Canadian Mineralogist (1961): 6: 576.

Bulletin of the Chemical Society of Japan (1972): 45(8): 2476-2479.

Mineralogical Record (1976): 7: 182-183.

American Mineralogist (1977): 62: 1009.

Crook, W. B. (1978): Tveitite from the Barringer Hill District, Texas. Mineralogical Record. 9(6): 387.

Rocks & Minerals (1991): 66(3): 196-224.

Orlandi, P. & Pasero, M. (2006): Allanite-(La) from Buca della Vena mine, Apuan Alps, Italy, an epidote-group mineral. Canadian Mineralogist: 44: 63-68.

Smith, Art (2008), The Baringer Hill Pegmatite, Llano County, Texas Back Benders Gazette Volume XXXIX(9): 6-19.

External Links

http://home.satx.rr.com/robnjean/bh/story.html [Link Broken? Sep 2014]

http://www.hgms.org/BBG/Sep08.pdf (Art Smith (2008) The Baringer Hill Pegmatite, Llano County, Texas Back Benders Gazette Volume XXXIX - No. 9 pp 6-19)

http://www.texascooppower.com/texas-stories/history/all-that-glitters-is-sometimes-yttrium

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