Charoita
 Karoita | |
|---|---|
 | |
| Ezaugarri orokorrak | |
| Kategoria | silikato |
| Formula | |
| Dana sailkapena | 70.1.2.3 |
| Nickel-Strunz sailkapena | 9.DG.92 |
| Sistema kristalino | monoklinikoa |
| Talde espazial | 2/m - prismatiko |
| Zelda unitatea | a = 32,296 Å; b = 19,651 Å; c = 7,16 Å; β = 96,3° |
| Eponimoa | Txara |
| Aurkikuntza-lekua | Murunskii massif (en)  |
| Identifikazioa | |
| Kolorea | violet to deep lilac* |
| Esfoliazioa | distinct/good - good in three directions* |
| Distira | beira, silky* |
| Errefrakzio indizea | nα = 1,550 nβ = 1,553 nγ = 1,559 |
| Ezaugarri optikoak | biaxial (+)* |
| Pleokroismoa | ahul |
| 2V angelua | neurri: 28° to 30°, kalkulu: 72° |
| Marra | zuria |
| Erreferentziaka | [1] |
![{\displaystyle {(\mathrm {K} {,}{\mkern {3mu}}\mathrm {Sr} ){\vphantom {A}}_{\smash[{t}]{15}}{-}16\,(\mathrm {Ca} {,}{\mkern {3mu}}\mathrm {Na} ){\vphantom {A}}_{\smash[{t}]{32}}[\mathrm {Si} {\vphantom {A}}_{\smash[{t}]{6}}\mathrm {O} {\vphantom {A}}_{\smash[{t}]{11}}(\mathrm {O} {,}{\mkern {3mu}}\mathrm {OH} ){\vphantom {A}}_{\smash[{t}]{6}}]{\vphantom {A}}_{\smash[{t}]{2}}[\mathrm {Si} {\vphantom {A}}_{\smash[{t}]{12}}\mathrm {O} {\vphantom {A}}_{\smash[{t}]{18}}(\mathrm {O} {,}{\mkern {3mu}}\mathrm {OH} ){\vphantom {A}}_{\smash[{t}]{12}}]{\vphantom {A}}_{\smash[{t}]{2}}[\mathrm {Si} {\vphantom {A}}_{\smash[{t}]{17}}\mathrm {O} {\vphantom {A}}_{\smash[{t}]{25}}(\mathrm {O} {,}{\mkern {3mu}}\mathrm {OH} ){\vphantom {A}}_{\smash[{t}]{18}}]{\vphantom {A}}_{\smash[{t}]{2}}(\mathrm {OH} {,}{\mkern {3mu}}\mathrm {F} ){\vphantom {A}}_{\smash[{t}]{4}}\,{\cdot }\,~3\,\mathrm {H} {\vphantom {A}}_{\smash[{t}]{2}}\mathrm {O} }}](https://wikimedia.org/api/rest_v1/media/math/render/svg/2e160fa21d5ed626774b57e389055405f9141e7b)
Karoita silikato motako minerala da.[1]
Ezaugarriak
Karoita silikato mineralaren formula kimikoa hau da: . Sistema monoklinikoaren arabera sortzen ditu kristalak. Mohs eskalaren arabera duen gogortasunaren balioa 5 - 6 da.
Eraketa eta meatokiak
Erreferentziak
- ↑ a b (Ingelesez) «Charoite: Mineral information, data and localities.» www.mindat.org (kontsulta data: 12-05-2019).
Kanpo estekak
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Index:
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