aluminosilicate

a lu mi no sil i cate |əˌlo͞omənəˈsilikit əˌlumənəˈsɪləkət | ▶noun Chemistry a silicate in which aluminum replaces some of the silicon, esp. a rock-forming mineral such as a feldspar or a clay mineral. ORIGIN early 20th cent.: from alumino- (combining form of aluminum ) + silicate .

aluminosilicate

aluminosilicate |əˌluːmɪnə (ʊ )ˈsɪlɪkeɪt | ▶noun Chemistry a silicate in which aluminium replaces some of the silicon, especially a rock-forming mineral such as a feldspar or a clay mineral.