What is "motukoreaite"

n. (context mineralogy English) A trigonal-hexagonal scalenohedral mineral containing aluminum, carbon, hydrogen, magnesium, oxygen, sodium, and sulfur.

Motukoreaite is a mineral with formula MgAl(OH)[Na(HO)](SO)·6HO (possibly more than one species). The mineral is named for Motukorea, the island in New Zealand where it was discovered. Motukoreaite was first noted in 1941 and officially described in 1977.