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Natrobistantite Mineral Data + |
General Natrobistantite Information |
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| (Na,Cs)Bi(Ta,Nb,Sb)4O12 | |||
| Molecular Weight = 1,101.75 gm | |||
| Cesium 3.62 % Cs 3.84 % Cs2O | |||
| Sodium 1.46 % Na 1.97 % Na2O | |||
| Tantalum 45.99 % Ta 56.15 % Ta2O5 | |||
| Niobium 8.43 % Nb 12.06 % Nb2O5 | |||
| Bismuth 20.86 % Bi 23.26 % Bi2O3 | |||
| Antimony 2.21 % Sb 2.65 % Sb2O3 | |||
| Oxygen 17.43 % O | |||
| ______ ______ | |||
| 100.00 % 99.93 % = TOTAL OXIDE | |||
| Na0.7Cs0.3Bi1.1Ta2.8NbSb0.2O12 | |||
| Replacing bismutotantalite in museum samples from a granitic pegmatite. | |||
| Approved IMA 1983 | |||
| Koktoky [Fuyan], Sinkiang-Uighur Autonomous Province, China. Link to MinDat.org Location Data. | |||
| For sodium (NATRium), BISmuth, and TANTalum in the chemical formula which deviates from the IMA pyrochlore nomenclature. | |||
Search for Natrobistantite Images | |||
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Natrobistantite Crystallography |
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| a = 10.502, Z = 4; V = 1,158.29 Den(Calc)= 6.32 | |||
| Isometric - HexoctahedralH-M Symbol (4/m 3 2/m) Space Group: F d3m | |||
| By Intensity(I/Io): 3.03(1), 1.858(0.9), 2.628(0.8), | |||
Physical Properties of Natrobistantite |
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| None | |||
| Blue green, Colorless, Green, Yellow green. | |||
| 6.1 - 6.2, Average = 6.15 | |||
| Transparent | |||
| Aggregates - Made of numerous individual crystals or clusters. | |||
| Octahedral Crystals - Occurs as octahedral shaped crystals. | |||
| Fluorescent, Short UV=strong red orange. | |||
| Adamantine | |||
| white | |||
Optical Properties of Natrobistantite |
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| Isotropic. | |||
| NCalc= 2.05 - from Gladstone-Dale relationship (KC = 0.1664) where Ncalc=Dcalc*KC+1 NCalc= 2.02 - from Gladstone-Dale relationship (KC = 0.1664) where Ncalc=Dmeas*KC+1 |
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Calculated Properties of Natrobistantite |
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relectron=5.36 gm/cc |
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| Fermion Index = 0.00013 Boson Index = 0.99987 |
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PENatrobistantite = 992.51 barns/electron |
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| GRapi = 0 (Gamma Ray American Petroleum Institute Units) Natrobistantite is Not Radioactive |
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Natrobistantite Classification |
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| 8.2.4.2 (8)Multiple Oxides with Nb, Ta, and Ti | |||
| (8.2)where (A)2 (B2O6) (O,OH,F) | |||
| (8.2.4)Pyrochlore Group (Cesstibtantite Subgroup; (Na,Cs)(Bi,Sb)(Ta,Nb)4O12 | |||
| IV/C.18-60 IV - Oxides | |||
| IV/C - Oxides with metal : oxygen = 2:3 (M2O3 and related compounds) | |||
| IV/C.18 - Pyrochlore group, Microlite series with Ta > Nb | |||
Other Natrobistantite Information |
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| NAME( AntBidBlaNic3) PHYS. PROP.(AntBidBlaNic3) OPTIC PROP.(AntBidBlaNic3) | |||
| Links to other databases for Natrobistantite : 1 -Am. Min. Crystal Structure Database 2 -Athena 3 - EUROmin Project 4 -Google Images 5 -Google Scholar 6 -Handbook of Mineralogy (UofA) 7 -MinDAT 8 -MinMax(Deutsch) 9 -MinMax(English) 10 -Mineralienatlas (Deutsch) 11 -QUT Mineral Atlas 12 -École des Mines de Paris Search for Natrobistantite using: Visit our Advertisers for Natrobistantite : Translate Natrobistantite Mineral Data : Ask about Natrobistantite here : Print or Cut-and-Paste your Natrobistantite Specimen Label here :
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