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ATHENA

MINERALOGY

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Mineral: MOTUKOREAITE
Formula: NaMg6Al3(SO4)2(OH)18.12H2O
Crystal System: Hexagonal
Group: Hydrotalcite supergroup. Wermlandite group
IMA Number: 1976-033
References: MM 41 (1977), 389; NJMM 163 (1991), 291; MR 34 (2003), 155; HB5 (2003); MM 76/5 (2012), 1289
Type Locality: Motukorea, Brown's Island, Waitemata Harbour, Auckland, New Zealand
Motukoreaite 5 cm
Motukorea, Brown's Island, Auckland, NZ (Type locality)
Motukoreaite is the clear coloured clay-like interstitial cement
Received from A. J. Read, DSIR, Petone, NZ, 1985
Photo and Coll. P. Perroud (now in NHM Geneva)
See also: athena.unige.ch -> mineral pictures

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