Benauite, Laubmannite (of Moore)

Benauite : SrFe³⁺₃[(OH)₆|(HPO₄,PO₄)|(PO₄,SO₄)], Laubmannite (of Moore) : (Fe³⁺,Fe²⁺,M)_8+x(OH,H₂O)₉(H₂O)₂(PO₄)₅, M = Fe³⁺, Cu²⁺ or other metal cation, x = approx· 0.1.

Locality: Clara Mine, Rankach valley, Oberwolfach, Wolfach, Black Forest, Baden-Württemberg, Germany

Yellow Benauite plates beside Laubmannite (of Moore) needles. Analyzed. Picture width 1 mm. Collection and photo Stephan Wolfsried

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Benauite, Laubmannite (of Moore)

Benauite : SrFe3+3[(OH)6|(HPO4,PO4)|(PO4,SO4)], Laubmannite (of Moore) : (Fe3+,Fe2+,M)8+x(OH,H2O)9(H2O)2(PO4)5, M = Fe3+, Cu2+ or other metal cation, x = approx· 0.1.

Benauite : SrFe³⁺₃[(OH)₆|(HPO₄,PO₄)|(PO₄,SO₄)], Laubmannite (of Moore) : (Fe³⁺,Fe²⁺,M)_8+x(OH,H₂O)₉(H₂O)₂(PO₄)₅, M = Fe³⁺, Cu²⁺ or other metal cation, x = approx· 0.1.