Ilvaite is a rare mineral found in the form of continuous masses and small crystals. It was not thought to form large crystals until they were discovered in the 2010s. in China. Ilvaite crystals are found exclusively in voids.
You can see ilvaite stone for sale and buy it in the Minerals of Russia online store.
General | |
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Category | Sorosilicates |
Formula (repeating unit) |
Ca(Fe2+)2Fe3+[O|OH|Si2O7] |
IMA symbol | Ilv |
Strunz classification | 9.BE.07 |
Crystal system | Monoclinic |
Crystal class | Prismatic (2/m) (same H-M symbol) |
Space group | P21/a |
Identification | |
Mohs scale hardness | 5.5-6 |
Streak | black |
Specific gravity | 3.8-4.1 |