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Category Oxide mineral
(repeating unit)
Strunz classification 4.CC.35
Crystal system Cubic
Crystal class Hexoctahedral (m3m)
H-M symbol: (4/m 3 2/m)
Space group Pm3m
Unit cell a = 3.9 Å; Z = 1
Color Red, red-brown, orange, dark gray
Crystal habit Cubic and octahedral crystals, granular, massive
Cleavage None
Fracture Conchoidal
Tenacity Brittle
Mohs scale hardness 6-6.5
Luster Adamantine
Diaphaneity Translucent to opaque
Specific gravity 4.88
Optical properties Isotropic
Refractive index n = 2.40
References [1][2][3]

Tausonite is the rare naturally occurring mineral form of strontium titanate: chemical formula: SrTiO3. It occurs as red to orange brown cubic crystals and crystal masses.

It is a member of the perovskite group.

It was first described in 1982 for an occurrence in a syenite intrusive in Tausonite Hill, Murunskii Massif, Aldan Shield, Sakha Republic, Yakutia, Eastern-Siberian Region, Russia.[1] It was named for Russian geochemist Lev Vladimirovich Tauson (1917–1989).[3] It has also been reported from a fenite dike associated with a carbonatite complex in Sarambi, Concepción Department, Paraguay.[2] and in high pressure metamorphic rocks along the Kotaki River area of Honshu Island, Japan.[1]