Tausonite
(repeating unit)SrTiO3 IMA symbol Tau[1] 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 Identification 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 [2][3][4]
H-M symbol: (4/m 3 2/m)
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, Murun Massif, Olyokma-Chara Plateau, Sakha Republic, Yakutia, geologically part of the Aldan Shield, Eastern-Siberian Region, Russia.[2] It was named for Russian geochemist Lev Vladimirovich Tauson (1917–1989).[4] It has also been reported from a fenite dike associated with a carbonatite complex in Sarambi, Concepción Department, Paraguay.[3] and in high pressure metamorphic rocks along the Kotaki River area of Honshu Island, Japan.[2]
References
- ^ Warr, L.N. (2021). "IMA–CNMNC approved mineral symbols". Mineralogical Magazine. 85 (3): 291–320. Bibcode:2021MinM...85..291W. doi:10.1180/mgm.2021.43. S2CID 235729616.
- ^ a b c Tausonite on Mindat.org
- ^ a b Tausonite in the Handbook of Mineralogy
- ^ a b Tausonite data on Webmineral
