Formula : (Na,Ca,K)9[((OH)2,SO4,CO3,Cl2)3/Al6Si6O24] * ¨ H2O
System: hexagonal Hardness:5½-6 Rarity:very rare
Strunz id:VIII/J.9-60 -
SILICATES
Name origin: Named after its discovery locality at Sacrofano, Campagnano di Roma, Rome Province, Latium, Italy.
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