|  |  | 
	 Cesstibtantite Mineral Data  |  |  | 
   
| General Cesstibtantite  Information  | 
|  Chemical  Formula: | (Cs,Na)SbTa4O12 | 
|  Composition: | Molecular Weight = 579.81 gm | 
|  | Cesium     6.88 %  Cs    7.29 % Cs2O | 
|  | Sodium     1.19 %  Na    1.60 % Na2O | 
|  | Tantalum  59.30 %  Ta   72.40 % Ta2O5 | 
|  | Niobium    1.60 %  Nb    2.29 % Nb2O5 | 
|  | Antimony  12.60 %  Sb   15.08 % Sb2O3 | 
|  | Hydrogen   0.12 %  H     1.09 % H2O | 
|  | Oxygen    17.66 %  O | 
|  | Fluorine   0.66 %  F     0.66 % F | 
|  | -   %
  F    -0.28 % -O=F2 | 
|  | ______        ______ | 
|  | 100.00 %      100.14 % = TOTAL OXIDE | 
|  Empirical Formula: | Cs0.3(OH)0.7Sb0.6Na0.3Ta1.9Nb0.1O5.7F0.2 | 
|  Environment: | Highly fractionated granite pegmatites. | 
|  IMA Status: | Approved IMA 1982 | 
|  Locality: | Leshaia pegmatite, Vuoriyarvi carbonatite complex, Kola Peninsula, Russia. Link to MinDat.org Location Data. | 
|  Name Origin: | Named for CESium, antimony (STIBium), and TANTalum in the composition. | 
|  Synonym: | ICSD 74283 | 
|  | PDF 35-672 | 
|  |