Anorthite (an = not, ortho = straight) is the calcium endmember of the plagioclase feldspar mineral series. The chemical formula of pure anorthite is CaAl 2 Si 2 O 8. Anorthite is found in igneous …

Anorthite Plagioclase. Comments: Opaque white crystal of anorthite with dark brown solidified lava coating. Location: Miyake-jima, Shizuoka, Japan. Scale: See Photo. © Jeff Weissman / …

Ca-rich end member of the plagioclase (Albite -Anorthite Series). High- and low-temperature structural modifications exist. Chemically and stoichiometrically very similar to lawsonite …

Anorthite, a feldspar mineral, calcium aluminosilicate (CaAl2Si2O8), that occurs as white or grayish, brittle, glassy crystals. Primarily a rock-forming mineral, it is used in the manufacture …

Detailed description, properties, locality information guide about the plagioclase feldspar mineral anorthite.

Anorthite is used in ceramics and glass. Anorthite is also a useful mineral for geologists to understand the formation conditions of igneous rocks.

Anorthite is a rare feldspar and its only real use is as specimens for collectors. Found in igneous rocks and in contact metamorphic limestone, notable occurrences include Lake County, …

2022年7月16日 · Anorthite is a rare, black, white, reddish crystal! Learn all about what anorthite is used for, its lunar connections, value, and more in our Anorthite Gemstone Guide!

2025年3月6日 · Igneous rock - Albite, Anorthite, System: Most of the common minerals found in igneous rocks are solid-solution phases. These include olivine, pyroxene, amphibole, biotite, …

Anorthite is the calcium rich end member of the plagioclase feldspar solid solution series. By definition the mineral must contain no more than 10% sodium and no less than 90% calcium. …