andesiine

Andesine is a plagioclase feldspar mineral, which is a group of tectosilicate minerals that are rich in sodium and calcium. It is a solid solution series between albite (sodium-rich) and anorthite (calcium-rich), with the general formula NaAlSi3O8-CaAl2Si2O8. Andesine is named after the Andes mountain range, where it is commonly found in igneous rocks such as granites, diorites, and andesites. It is typically found in the form of prismatic crystals or as massive grains in igneous rocks. Andesine is often used as a gemstone, particularly in the form of tumbled stones or cabochons, due to its attractive color and luster. It is also used in the production of glass and ceramics. Andesine is a common mineral in the Earth's crust and is an important component of many igneous rocks.