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Laubmannite

About

Discredited 1990

Type Locality
Shady, Polk County, Arkansas, USA
Mineral Data
Mixture Of: 
Previously published; Fe2+3Fe3+6(PO4)4(OH)12
Physical Properties
Colour: 
Brown, Greenish brown, Grayish green, Yellow green, Dark green
Streak: 
Brownish
Hardness: 
3.5 - 4