Phengite is a series name for dioctahedral micas of composition K(AlMg)2(OH)2(SiAl)4O10 it is common for Mg or Fe2+ to substitute for Al on the Y site and a corresponding increase in Si on the Z site in the mica group formula X2Y4–6Z8O20(OH, F)4. Similar to muscovite but with addition of magnesium. It is a non-IMA recognized mineral name representing the series between muscovite and celadonite. The silica content of phengite has been proposed as a geobarometer for the metamorphism of low grade schists.
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| - Fengita (ca)
- Fengite (muscovite) (it)
- Phengite (en)
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| - La fengita és una varietat dioctaèdrica de mica de composició K(AlMg)₂(OH)₂(SiAl)₄O10, similar a la moscovita però amb un contingut superior de magnesi. El mineral no està reconegut per la IMA. El contingut de sílice de la fengita s'ha proposat per a realitzar geotermobarometria en esquists de baix grau de metamorfisme. (ca)
- Phengite is a series name for dioctahedral micas of composition K(AlMg)2(OH)2(SiAl)4O10 it is common for Mg or Fe2+ to substitute for Al on the Y site and a corresponding increase in Si on the Z site in the mica group formula X2Y4–6Z8O20(OH, F)4. Similar to muscovite but with addition of magnesium. It is a non-IMA recognized mineral name representing the series between muscovite and celadonite. The silica content of phengite has been proposed as a geobarometer for the metamorphism of low grade schists. (en)
- La fengite è un minerale roccioso che costituisce una variante infrequente delle muscoviti. Si tratta di un minerale ad alta composizione percentuale di silicio; il magnesio, in questa varietà di muscovite, spesso prende parzialmente il posto dell'alluminio. (it)
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| - La fengita és una varietat dioctaèdrica de mica de composició K(AlMg)₂(OH)₂(SiAl)₄O10, similar a la moscovita però amb un contingut superior de magnesi. El mineral no està reconegut per la IMA. El contingut de sílice de la fengita s'ha proposat per a realitzar geotermobarometria en esquists de baix grau de metamorfisme. (ca)
- Phengite is a series name for dioctahedral micas of composition K(AlMg)2(OH)2(SiAl)4O10 it is common for Mg or Fe2+ to substitute for Al on the Y site and a corresponding increase in Si on the Z site in the mica group formula X2Y4–6Z8O20(OH, F)4. Similar to muscovite but with addition of magnesium. It is a non-IMA recognized mineral name representing the series between muscovite and celadonite. The silica content of phengite has been proposed as a geobarometer for the metamorphism of low grade schists. (en)
- La fengite è un minerale roccioso che costituisce una variante infrequente delle muscoviti. Si tratta di un minerale ad alta composizione percentuale di silicio; il magnesio, in questa varietà di muscovite, spesso prende parzialmente il posto dell'alluminio. (it)
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