Xanthoxenite
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| Xanthoxenite | |
|---|---|
| General | |
| Category | Phosphate minerals |
| Formula (repeating unit) | Ca4Fe3+2(PO4)4(OH)2·3H2O |
| Strunz classification | 08.DH.40 |
| Crystal symmetry | Triclinic 1 |
| Unit cell | a = 6.7Å, b = 8.85Å, c = 6.54Å; α = 92.1°, β = 110.1°, γ = 93.2°; Z = 1 |
| Identification | |
| Formula mass | 739.95 g/mol |
| Color | Pale to brownish yellow |
| Crystal habit | Occurs as platy crystals and as lamellar aggregates and crusts |
| Crystal system | triclinic |
| Cleavage | Perfect {010} |
| Mohs scale hardness | 2.5 |
| Luster | Earthy (Dull) |
| Streak | White |
| Diaphaneity | Translucent |
| Specific gravity | 2.97 measured, 3.38 calculated |
| Optical properties | Biaxial (-) |
| Refractive index | nα = 1.704 nβ = 1.715 nγ = 1.724 |
| References | [1][2][3] |
Xanthoxenite is a mineral found in Australia, Brazil, Portugal, Spain, Ukraine, and the United States. It was first described in 1920.
References
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