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Vivianite

Type Locality
Wheal Kind (Wheal Kine), West Wheal Kitty group, St Agnes, St Agnes District, Cornwall, England, UK
Mineral Data
Fe2+3(PO4)2·8H2O
Strunz: 
8.CE.40
Physical Properties
Crystal System: 
Monoclinic
Hardness: 
1.5 - 2.0
Tenacity: 
sectile