Red bermanite crystals. From Hagendorf South Pegmatite (Cornelia Mine; Hagendorf South Open Cut), Bacaria, Germany. Field of view is 1 mm across. (Photo courtesy Christian Rewitzer.)

Formula: Mn2+Mn3+2(PO4)2(OH)2.4H2O Monoclinic


Bermanite is a rare mineral formed in granitic pegmatites in association with other phosphate minerals.

FLORENCE COUNTY: Subhedral tabular red crystals of bermanite less than 1.5 mm. in diameter are reported associated with spodumene in a pegmatite in Sec. 22 T.39N. R.17E. in Fern Township (Koehler, 1988).