Naquite
Naquite is an iron silicide mineral with the formula FeSi. It was discovered in the 1960s in Donetsk Oblast in Soviet Union, and named fersilicite, but was not approved by the International Mineralogical Association. It was later rediscovered in Nagqu, Tibet. Naquite occurs together with other rare iron silicide minerals, xifengite (Fe5Si3) and linzhiite (FeSi2).[2]
| Naquite | |
|---|---|
| General | |
| Category | Mineral |
| Formula (repeating unit) | FeSi |
| Strunz classification | 1.BB.15 |
| Crystal system | Cubic |
| Crystal class | Isometric – tetartoidal H-M symbol (23) Space group P213 |
| Unit cell | a = 4.48 Å, Z = 4 |
| Identification | |
| Color | Steel grey, tin white |
| Cleavage | None |
| Fracture | Brittle – conchoidal |
| Mohs scale hardness | 6.5 |
| Luster | Metallic |
| Streak | grayish black |
| Diaphaneity | Opaque |
| Specific gravity | 6.1–6.2 (calc.) |
| References | [1][2] |
References
- Naquite. Mindat
- Fersilicite. webmineral.com
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