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Apophyllite group [abbr. Apo ]

Year of discovery: 1885 (Japan)

Locality list: 91 localities of apatite

• [ A⁺ ][Ca₄][ B^- |(Si₂O₅)₄],8H₂O

• [ K ][ F ]: Apophyllite-(KF)
• [ K ][ OH ]: Apophyllite-(KOH)
• [ Na ][ F ]: Apophyllite-(NaF)
• [ Na ][ OH ]: Apophyllite-(NaOH)

• Class: Phyllosilicate