Piemontite is a Mn3+-bearing silicate mineral with neso-silicate structure. Isomorphism exists with epidote and clinozoisite. Space group P21/m. The structural formula may be written as Ca2(Al, Fe, Mn)O6-AlO4(OH)2...Piemontite is a Mn3+-bearing silicate mineral with neso-silicate structure. Isomorphism exists with epidote and clinozoisite. Space group P21/m. The structural formula may be written as Ca2(Al, Fe, Mn)O6-AlO4(OH)2·Al6·SiO4·Si2O7. Piemontite is different from epidote and clinozoisite mainly in that Mn2+ enters into the epidote struc-展开更多
文摘Piemontite is a Mn3+-bearing silicate mineral with neso-silicate structure. Isomorphism exists with epidote and clinozoisite. Space group P21/m. The structural formula may be written as Ca2(Al, Fe, Mn)O6-AlO4(OH)2·Al6·SiO4·Si2O7. Piemontite is different from epidote and clinozoisite mainly in that Mn2+ enters into the epidote struc-