Tetrataenite
Tetrataenite is a native metal alloy composed of chemically-ordered L10-type FeNi, recognized as a mineral in 1980. The mineral is named after its tetragonal crystal structure and its relation to the iron-nickel alloy, taenite. It is one of the mineral phases found in meteoric iron.
| Tetrataenite | |
|---|---|
Silvery-bright tetrataenite crystals | |
| General | |
| Category | Native element minerals |
| Formula (repeating unit) | FeNi |
| IMA symbol | Ttae |
| Strunz classification | 1.AE.10 |
| Crystal system | Tetragonal |
| Crystal class | Domatic (m) (same H-M symbol) |
| Space group | Pm |
| Unit cell | 22.92 ų |
| Identification | |
| Formula mass | 57.27 gm |
| Color | gray white, silver white |
| Crystal habit | Granular – Common texture observed in granite and other igneous rock |
| Cleavage | none |
| Fracture | malleable |
| Mohs scale hardness | 3.5 |
| Luster | metallic |
| Streak | gray |
| Diaphaneity | opaque |
| Density | 8.275 |
| Common impurities | Co, Cu, P |
| References | |
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