[Mineral Forums] [Minerals for Sale] [About Us] [En Espanol] [Mineral Gallery] Fabre Minerals - Europe's first Internet mineral dealer, on the web since 1996 General Bariopyrochlore Information(Ba,Sr)(Nb,Ti)2(O,OH)7 |
Molecular Weight = 343.55 gm |
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Barium 11.99 % Ba 13.39 % BaO |
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Strontium 5.10 % Sr 6.03 % SrO |
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Calcium 1.17 % Ca 1.63 % CaO |
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Titanium 2.79 % Ti 4.65 % TiO2 |
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Niobium 48.68 % Nb 69.64 % Nb2O5 |
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Hydrogen 0.47 % H 4.20 % H2O |
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Oxygen 29.81 % O |
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______ ______ |
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100.00 % 99.53 % = TOTAL OXIDE |
Ba0.3Sr0.2Ca0.1Nb1.8Ti0.2O5.6(H2O)0.8 |
Contact zone of a highly weathered, biotite-bearing roof pendant in a carbonatite. |
Approved IMA 1977 |
From the Mbeya carbonatite, Panda Hill, near Mbeya, Tanzania. Link to MinDat.org Location Data. |
Assigned by the IMA pyrochlore nomenclature group for the predominant barium content and to pyrochlore. |
Bariopyrochlore + Pronunciation |
ICSD 45819 |
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PDF 12-285 |
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Pandaite |
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Bariopyrochlore Crystallographya = 10.562, Z = 8; V = 1,178.25 Den(Calc)= 3.87 |
Isometric - HexoctahedralH-M Symbol (4/m 3 2/m) Space Group: F d3m |
By Intensity(I/Io): 3.044(1), 6.09(0.8), 1.864(0.7), |
| Physical Properties of Bariopyrochlore{111} Indistinct, {111} Indistinct, {111} Indistinct |
Green gray, Yellow gray. |
4 |
Transparent to Translucent |
Brittle - Conchoidal - Very brittle fracture producing small, conchoidal fragments. |
Anhedral Grains - Granular minerals without the expression of crystal shapes |
4.5-5 - Near Apatite |
Resinous |
white |
| Optical Properties of BariopyrochloreCI meas= -0.097 (Poor) - where the CI = (1-KPDmeas/KC) |
CI calc= -0.134 (Poor) - where the CI = (1-KPDcalc/KC) KPDcalc= 0.2817,KPDmeas= 0.2725,KC= 0.2485 Ncalc = 1.96 - 1.99 Isotropic, n=2.07-2.11. |
| Calculated Properties of BariopyrochloreBulk Density (Electron Density)=3.67 gm/cc |
note: Specific Gravity of Bariopyrochlore =4.00 gm/cc. Fermion Index = 0.02 |
Boson Index = 0.98 PEBariopyrochlore = 134.09 barns/electron |
U=PEBariopyrochlore x rElectron Density= 491.47 barns/cc. GRapi = 0 (Gamma Ray American Petroleum Institute Units) |
Bariopyrochlore is Not Radioactive | Bariopyrochlore Classification08.02.01.03 (08)Multiple Oxides with Nb, Ta, and Ti |
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(08.02)where (A)2 (B2O6) (O,OH,F) |
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(08.02.01)Pyrochlore Group (Pyrochlore Subgroup; Nb>Ta;(Nb+Ta)>2(Ti) |
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04.DH.15 04 - OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodate |
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04.D - Metal:Oxygen = 1:2 and similar |
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04.DH -With large (± medium-sized) cations; sheets of edge-sharing octahedra |
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| Other Bariopyrochlore InformationNAME( AntBidBlaNic3) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(AntBidBlaNic3) |
Links to other databases for Bariopyrochlore : |
1 - Am. Min. Crystal Structure Database 2 - Athena 3 - EUROmin Project 4 - Ecole des Mines de Paris 5 - Google Images 6 - Google Scholar 7 - Handbook of Mineralogy (MinSocAm) 8 - MinDAT 9 - MinMax(Deutsch) 10 - MinMax(English) 11 - Mineralienatlas (Deutsch) 12 - QUT Mineral Atlas 13 - Ruff.Info 14 - WWW-MINCRYST Search for Bariopyrochlore using: Visit our Advertisers for Bariopyrochlore : AA Mineral SpecimensB & L Fine Minerals Crystalarium.com Dan Weinrich Fine Minerals Dan Weinrich Auctions Dakota Matrix Desert Winds Gems and Minerals Excalibur Minerals Exceptional Minerals Fabre Minerals Heliodor John Betts Fine Minerals Mason's Minerals Mineral News Mineral of the Month Club Wrights Rock Shop Translate Bariopyrochlore Mineral Data : Ask about Bariopyrochlore here : Print or Cut-and-Paste your Bariopyrochlore Specimen Label here :
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