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ATHENA

MINERALOGY

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Mineral:ALLOPHANE
Formula:Al2O3 · (SiO2)1.3-2 · (H2O)2.5-3
Crystal System:Amorphous
Strunz Nr:8/H.26-10
Group:Kaolinite-Serpentine group Serpentine subgroup
References:AM 61 (1976), 379; HB2/1 (1995)
Type Locality:Gräfenthal, Thüringen, Germany

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