Charoita

Karoita silikato mineralaren formula kimikoa hau da: ${(\mathrm {K} {,}{\mkern {3mu}}\mathrm {Sr}){\vphantom {A}}_{\smash[{t}]{15}}{-}16\,(\mathrm {Ca} {,}{\mkern {3mu}}\mathrm {Na}){\vphantom {A}}_{\smash[{t}]{32}}[\mathrm {Si} {\vphantom {A}}_{\smash[{t}]{6}}\mathrm {O} {\vphantom {A}}_{\smash[{t}]{11}}(\mathrm {O} {,}{\mkern {3mu}}\mathrm {OH}){\vphantom {A}}_{\smash[{t}]{6}}]{\vphantom {A}}_{\smash[{t}]{2}}[\mathrm {Si} {\vphantom {A}}_{\smash[{t}]{12}}\mathrm {O} {\vphantom {A}}_{\smash[{t}]{18}}(\mathrm {O} {,}{\mkern {3mu}}\mathrm {OH}){\vphantom {A}}_{\smash[{t}]{12}}]{\vphantom {A}}_{\smash[{t}]{2}}[\mathrm {Si} {\vphantom {A}}_{\smash[{t}]{17}}\mathrm {O} {\vphantom {A}}_{\smash[{t}]{25}}(\mathrm {O} {,}{\mkern {3mu}}\mathrm {OH}){\vphantom {A}}_{\smash[{t}]{18}}]{\vphantom {A}}_{\smash[{t}]{2}}(\mathrm {OH} {,}{\mkern {3mu}}\mathrm {F}){\vphantom {A}}_{\smash[{t}]{4}}\,{\cdot }\,~3\,\mathrm {H} {\vphantom {A}}_{\smash[{t}]{2}}\mathrm {O} }$ . Sistema monoklinikoaren arabera sortzen ditu kristalak. Mohs eskalaren arabera duen gogortasunaren balioa 5 - 6 da.

Ezaugarriak

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