Specimen data
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METAVIVIANITE
Fe
2+
3-x
Fe
3+
x
(PO
4
)
2
(OH)x·(8-x)H
2
O
Locality: Valencia Mine, N. Groton, NH
Specimen Size: Rhombic tabular, pale-green, Metavivianite crystals, largest 0.2 mm
Environment: Phosphate pegmatite
Field collected: Tom Mortimer
