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Locality: Rio Marina, Elba Island, Livorno Province, Tuscany, Italy

Field of View: 14 mm
Formula:
CaFe
2+
2
Fe
3+
 
(Si
 
2
O
 
7
)O(OH)
System:OrthorhombicColour:Iron-black, dark grayish ...
Hardness:5½ - 6

Ilvaite crystal from Mt.Fico. Collection & Photo M.Chinellato

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