Anorthite Apr 2026

Anorthite ( ) is the calcium-rich end-member of the series. While it is a primary rock-forming mineral that is relatively rare in its pure form on Earth, it is a dominant component of the lunar highlands . 1. Composition and Physical Properties

: Approximately 6 to 6.5 on the Mohs scale, often used to distinguish it from softer minerals like marble or quartzite. Density : Approximately anorthite

Anorthite is characterized by a three-dimensional network structure of SiO4cap S i cap O sub 4 AlO4cap A l cap O sub 4 tetrahedra. : Anorthite ( ) is the calcium-rich end-member of the series