Bermanite : Mn2+Mn3+2(PO4)2(OH)2·4H2O
As recorded:
Lord Hill Quarry, Stoneham, Oxford County, Maine, USA
Photo added to mindat.org
“Brownish red bermanite crystals showing acute terminations on black cryptomelane-like coating on altered triplte.”
Vandall Thomas King - 18th April 2017
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