noun Download 🔗Share Any of many silicate minerals, such as feldspar and zeolite, in which a proportion of the Si4+ ions are replaced by Al3+, the excess negative charge being balanced by extra sodium, potassium or calcium ions. Examples : "The geologist explained that granite is a common rock containing several minerals, including aluminosilicate materials like feldspar. " material geology chemistry mineral compound science Chat with AIVocabulary GamePractice Reading