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Umbrianite
Type Locality
Vispi Quarry (incl. Celli; Pian di Celle), San Venanzo, Terni Province, Umbria, Italy
Mineral Data
K
7
Na
2
Ca
2
[Al
3
Si
10
O
29
]F
2
Cl
2
Physical Properties
Hardness:
0.0
