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Formula: Na2BaTi2O2(Si2O6)2
Valence: Na2BaTi4+2(Si4O12)O2
Inosilicate (chain silicate), single chains, batisite group,
barium- and titanium- bearing
mineral
Crystal System: Orthorhombic
Specific gravity: 3.432 measured, 3.49 calculated
Hardness: 5½ to 6
Streak: Rose-brown
Colour: Dark brown
Solubility: Insoluble in hydrochloric, nitric and sulphuric acids
Electrical: Some samples are piezoelectric
Thermal Behaviour: At 1000°C, batisite decomposes with the formation of
fresnoite
Common impurities: Zr,Al,Fe,Nb,Mn,Mg,Ca,Sr
Environments
Plutonic igneous environments
Pegmatites
Localities
At the type locality, the Inagli chrome diopside deposit, Inagli Massif, Aldan, Sakha, Russia, batisite occurs
in aegirine - arfvedsonite -
microcline
pegmatites in
dunites. Associated minerals include
microcline, nepheline,
aegirine, arfvedsonite,
lorenzenite, uranothorite,
eudialyte, apatite and
orthoclase
(HOM).
Batisite from the Inagli chrome diopside deposit -
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