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Earth lab datasite

Ludlamite
Phosphate with siderite
hydrous iron magnesium manganese phosphate
(Fe Mg Mn)3 (PO4)2 OH4?
Scale bar = 1 centimetre
cleavage: Perfect
crystal system: Monoclinic
hardness 3.5
relative density 3.1 - 3.2
West Phoenix mine, St. Cleer, Cornwall
25 I 6