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ATHENA

MINERALOGY

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Mineral:LAUBMANNITE (of Frondel) = DUFRENITE + KIDWELLITE + BERAUNITE
Formula:(Fe3+,Fe2+)8(PO4)5(OH,H2O)9 · 2H2O
References:AM 34 (1949), 513; AM 75 (1990), 1197; EJM 13 (2001), 99; MM 68 (2004), 147
Type Locality:Coon Creek Mine (York Mine), Shady, Polk Co., Arkansas, USA


Mineral:LAUBMANNITE = Mixture DUFRENITE, KIDWELLITE, BERAUNITE
Formula:(Fe2+,Mn2+,Ca)3Fe3+6 (PO4)4(OH)12
Crystal System:Orthorhombic
Strunz Nr:7/D.11-65
References:AM 55 (1970), 135; AM 75 (1990), 1197; EJM 13 (2001), 99; MM 68 (2004), 147
Type Locality:Coon Creek Mine (York Mine), Shady, Polk Co., Arkansas, USA

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