Tefroita
 Tefroita | |
|---|---|
 | |
| Ezaugarri orokorrak | |
| Kategoria | silikato |
| Formula | |
| Dana sailkapena | 51.3.1.4 |
| Nickel-Strunz sailkapena | 9.AC.05 |
| Sistema kristalino | ortoerronbikoa |
| Talde espazial | mmm (2/m 2/m 2/m) - dipiramidala |
| Zelda unitatea | a = 4,88(2) Å; b = 10,61(2) Å; c = 6,24(2) Å; |
| Eponimoa | Errauts eta kolore |
| Aurkikuntza-lekua | Sterling Hill (en)  |
| Identifikazioa | |
| Kolorea | , marroi iluna |
| Gogortasuna Mohs eskalan | 6 |
| Errefrakzio indizea | nα = 1,759 nβ = 1,797 nγ = 1,860 |
| Pleokroismoa | ahul |
| 2V angelua | neurri: 60° to 70°, kalkulu: 78° |
| Erreferentziaka | [1] |
![{\displaystyle {\mathrm {Mn} {\vphantom {A}}_{\smash[{t}]{2}}{\vphantom {A}}^{+}2\mathrm {SiO} {\vphantom {A}}_{\smash[{t}]{4}}}}](https://wikimedia.org/api/rest_v1/media/math/render/svg/4f87cb69210804d69893e3304df1c35d4ebe85ab)
Tefroita silikato motako minerala da eta olibinoaren taldearen kidea da. [1]
Ezaugarriak
Tefroita silikato mineralaren formula kimikoa hau da: . Sistema ortoerronbikoaren arabera sortzen ditu kristalak. Mohs eskalaren arabera duen gogortasunaren balioa 6 da.
Erreferentziak
- ↑ a b (Ingelesez) «Tephroite: Mineral information, data and localities.» www.mindat.org (kontsulta data: 12-05-2019).
Kanpo estekak
| Autoritate kontrola |
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Artikulu hau geologiari buruzko zirriborroa da. Wikipedia lagun dezakezu edukia osatuz. |
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