Anorthosite (/ əˈnɔːrθəsaɪt /) is a phaneritic, intrusive igneous rock characterized by its composition: mostly plagioclase feldspar (90–100%), with a minimal mafic component …

2023年8月26日 · Anorthosite is a type of igneous rock that is primarily composed of a mineral called plagioclase feldspar. It is known for its distinctive light-colored appearance, often …

Anorthosite, type of intrusive igneous rock composed predominantly of calcium-rich plagioclase feldspar. All anorthosites found on Earth consist of coarse crystals, but some samples of the …

DESCRIPTION: Anorthosite is an igneous rock that consists of 90 or more percent of plagioclase feldspar, which is labradorite in a large percentage of the anorthosites used as gemrocks (see …

A coarse-grained crystalline rock consisting mostly of calcic plagioclase (>90%, usually labradorite) with <10% mafics. The mafic mineral may be clinopyroxene, orthopyroxene, …

Anorthosite is a type of intrusive igneous rock that is composed primarily of labradorite or plagioclase feldspar. This rock type forms when magma rises into the Earth’s crust and slowly …

Anorthosite is a coarse-grained, light-coloured containing rich elements of plutonic rock. It is mainly composed of plagioclase (generally bytownite or labradorite) also sometimes with small …

Anorthosite (pronounced /æˈnɔrθəsaɪt/, /ə-/) is a phaneritic, intrusive igneous rock characterized by a predominance of plagioclase feldspar (90-100%), and a minimal mafic component (0 …

Anorthosite is a coarse-grained rock composed essentially of plagioclase feldspar in the range andesine to anorthite. The term was coined by T. S. Hunt in 1863 to apply to rocks composed …

Anorthosite is typically a coarse-grained intrusive igneous rock with color varies between white, yellowish to brown, shades of gray, blush, and smoky pigment. The rock is characterized by …