Category Oxide mineral Strunz classification 4.CB.70 Crystal system Cubic | Formula
(repeating unit) Bi12SiO20 Dana classification 16a.03.05.01 | |
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Crystal class Tetartoidal (23)
H-M symbol: (23) | ||
Sillénite or sillenite is a mineral with the chemical formula Bi12SiO20. It is named after the Swedish chemist Lars Gunnar Sillén, who mostly studied bismuth-oxygen compounds. It is found in Australia, Europe, China, Japan, Mexico and Mozambique, typically in association with bismutite.
The cubic crystal structure of sillénite is shared by several synthetic materials including bismuth silicon oxide, bismuth titanate and bismuth germanate.
References
Sillénite Wikipedia(Text) CC BY-SA