Formula : Na_0.6_Mg6Al3[(OH)_9_/SO4,CO3]2 * 12 H2O
System: trigonal Hardness:1-1½ Rarity:very rare
Strunz id:VI/D.14-20 -
SULFATES, CHROMATES, MOLYBDATES and TUNGSTATES
Name origin: Named by K.A. Rodgers, J.E. Chisholm, R.J. Davis, and C.S. Nelson in 1977 for the Maori name of the type locality, Motukorea, meaning "sland of cormorants".
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