Plagioclase is a major constituent mineral in Earth's crust and is consequently an important diagnostic tool in petrology for identifying the composition, origin and evolution of igneous …

What is Plagioclase? Plagioclase is the name of a group of feldspar minerals that form a solid solution series ranging from pure albite, Na (AlSi 3 O 8), to pure anorthite, Ca (Al 2 Si 2 O 8). …

Plagioclase, any member of the series of abundant feldspar minerals usually occurring as light-colored, glassy, transparent to translucent, brittle crystals. Plagioclase is a mixture of albite, or …

Plagioclases are fundamental constituents of the Earth’s crust and also of the anorthosite crust of the Moon (the highlands). The name plagioclase derives from the Greek πλάγιος (plágios, …

Plagioclase minerals are hard, non-metallic minerals that exhibit two cleavage directions that meet at nearly right angles. The name ‘plagioclase’ refers to this cleavage pattern, coming from the …

In petrology, the plagioclase series are defined based on their percentage of the two end-members albite (Ab) to anorthite (An). Compositions of individual samples are usually written …

May 17, 2019 · Plagioclase is a common clast produced during the weathering of igneous and metamorphic rocks. It can be the most abundant clast in sediments located close to their …

The Plagioclase series is a group of related feldspar minerals that essentially have the same formula but vary in their percentage of sodium and calcium. Albite and Anorthite are the end …

From the Greek plagios - "oblique" and klao - "I cleave" in allusion to the obtuse cleavage angles of the good cleavages. Comments: Colorless, lustrous blocky albite crystals to 3 cm in size …

Plagioclase constitutes a very important family of minerals, more widespread and more abundant than alkali feldspars, forming part of the constitution of most igneous and metamorphic rocks.