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Mineralpedia Details for Bermanite

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Bermanite

Bermanite

Formula
Mn2+Mn3+2(PO4)2(OH)2ยท4H2
Crystal System
Monoclinic 
Cleavage
Perfect, Indistinct, None 
Luster
Vitreous - Resinous 
Color
light red, dark reddish brown 
Class
Monoclinic - Sphenoidal 
Fracture
Brittle 
Hardness
3.5 
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Bermanite from Tip Top mine, Custer Co., South Dakota, United States

Bermanite
            from Tip Top mine, Custer Co., South Dakota, United States

Deep rusty red, acicular crystals to about 0.5mm lining a 2x1cm cavity.

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Bermanite from Stewart mine, Pala dist., San Diego Co., California, United States

Bermanite
            from Stewart mine, Pala dist., San Diego Co., California, United States

Excellent micro bladed deep red crystals of Bermanite in altered phosphate rock. As small as these crystals are, under the scope they are rather "large" and distinct.

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