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Fantappièite
Type Locality
Stracciacappe caldera, Rome, Rome Province, Latium, Italy
Mineral Data
[Na
82.5
Ca
33
K
16.5
](Si
99
Al
99
O
396
)(SO
4
)
33
·4H
2
O
Strunz:
9.FB.05
Physical Properties
Hardness:
0.0
Synonyms
Synonyms:
Fantappieite
