A group of crystalline minerals, all silicates of aluminum with potassium, sodium, calcium, or barium. An essential constituent of nearly all crystalline rocks. (Marble Institute, 2011)
« Back to Glossary Indexfeldspar
« Back to Glossary Index
A group of crystalline minerals, all silicates of aluminum with potassium, sodium, calcium, or barium. An essential constituent of nearly all crystalline rocks. (Marble Institute, 2011)
« Back to Glossary Index