👉 Plagioclasite is a mineralogy term that describes a type of calcium carbonate mineral, which is a common material found in many natural and synthetic materials. It is named after the word "plagi" which means "to glue," referring to the way in which it glues together small crystals or grains. Plagioclasite is typically found in rocks such as granite, dolomite, and marble, but can also occur naturally within minerals like quartz and feldspar.