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Tausonite

IMA-Approved Mineral Species


Properties and Data
Physical Properties
Composition
SrTiO3
Chemical Name
Strontium Titanate
Molecular Weight
183.485 g/mol
Density
4.88 - 5.11 g/cm3
Mohs Hardness
5.5 - 6.5
Member of
Perovskite Subgroup
Crystal System
Isometric
Optical Properties
Type
Isotropic
Refractive Index
n = 2.394 - 2.417
Dispersion Factor
0.19

Additional Properties
Inherent
Piezoelectric
Additional Information
Otherwise known by STO, Fabulite, Marvelite, or Diagem

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Variants and Types
Intrinsic
Intrinsic
Color: Beige to Black
Production and Synthesis
Verneuil Method
Verneuil Method
Involves sputtering molten material onto a boule similarly to plasma coating. Produces gem-grade quickly and cheaply, but often with defects.
References
REFERENCES





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