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ATHENA

MINERALOGY

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Mineral: BENTORITE
Formula: Ca6(Cr,Al)2(SO4)3(OH)12.26H2O
Crystal System: Hexagonal
Group: Ettringite group
IMA Number: 1979-042
References: Isr. J. Earth Sci. 29 (1980), 81; HB5 (2003); Minerals 10 (2020), 38
Type Locality: Hatrurim formation, near the Arad-Sodom road, Dead Sea, Negev Desert, Israel
Bentorite, 4 cm
Hatrurim Formation, IL
From Shulamit Gross, G.S.I.
Coll. P. Perroud (now in NHM Geneva)
See also: athena.unige.ch -> mineral pictures

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