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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
  • Phengite
  • Fengite (muscovite)
rdfs:comment
  • 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.
  • 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.
  • 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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  • Phengite
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  • Phengite
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  • External Image
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  • Mica group
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  • K224O10
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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.
  • 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.
  • 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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