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Franzinite

(Na,K)₆Ca₂(Al₆Si₆O₂₄)(SO₄)₂·2H₂O

Trigonale IMA approved

構成

Composizione (% in peso)

O

Si

Al

Na

Ca

OOxygen46.9%
SiSilicon14.5%
AlAluminium13.9%
NaSodium11.9%
CaCalcium6.9%
SSulfur5.5%
HHydrogen0.3%

語源

名前の由来 Marco Franzini.