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Calcic-tourmaline group
[Ca][ Y3 ][ Z6 ][(OH)3|W|(BO3)3|(SiO3)6]
- Calcic-subgroup 1: [ Y2+3 ][ Z2+Z3+5 ]
- Feruvite
- Uvite
- Fluor-uvite
- Fluor-feruvite
- Calcic-subgroup 2: [ Y+2Y3+ ][ Z3+6 ]
- Liddicoatite
- Fluor-liddicoatite
- Calcic-subgroup 3
- No member
- Calcic-subgroup 4
- No member
- Unclassified
- Adachiite