mineral From Wikipedia, the free encyclopedia
Ewaldita karbonato motako minerala da eta donnayite taldearen kidea da. [1]
 Ewaldita | |
|---|---|
-Ewaldite-524525.jpg) | |
| Ezaugarri orokorrak | |
| Kategoria | karbonato |
| Formula | |
| Dana sailkapena | 14.2.4.1 |
| Nickel-Strunz sailkapena | 5.CC.05 |
| Sistema kristalino | hexagonala |
| Talde espazial | 6mm - dihexagonal pyramidal* |
| Zelda unitatea | a = 5,31 Å; c = 12,83 Å; |
| Eponimoa | Paul Peter Ewald |
| Aurkikuntza-lekua | Green River formation (Sweetwater Co.) (en)  |
| Identifikazioa | |
| Kolorea | bluish green*, pale greenish gray* |
| Errefrakzio indizea | nω = 1,646 nε = 1,572 |
| Ezaugarri optikoak | uniaxial (-)* |
| Pleokroismoa | visible |
| Erreferentziaka | [1] |
Ewaldita karbonato mineralaren formula kimikoa hau da: . Sistema hexagonalaren arabera sortzen ditu kristalak.
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