äˈwēˌnīt noun
or ha·uyne äˈwēn
( -s )
Etymology: hauynite from hauyne + -ite; hauyne from French haüyne, from Abbé René Just Haüy died 1822 French mineralogist + French -ine
: an isometric silicate mineral (Na,Ca) 4 − 8 Al 6 Si 6 O 24 (SO 4 ) 1 − consisting of sulfate of aluminum, calcium, and sodium and occurring commonly as rounded grains in various igneous rocks (hardness 5.5-6, specific gravity 2.4-2.5)