Where Is Periclase Found?

Periclase (MgO) is cubic (space group Fm 3 ¯ m ) with a perfect {001} cleavage. It is found in metamorphosed limestones and dolomites. The name is from the Greek peri, around, and klasis, fracture, and refers to the perfect cleavage.

How is periclase formed?

Periclase is relatively scarce and is found in marbles being formed from the dissolution of dolomite, CaMg(CO3)2 , into MgO-periclase, CaCO3-calcite and CO2-carbon dioxide. This dissolution takes place during metamorphism. ... The yellow brown and black colors of periclase are due to the presence of iron.

What is periclase mineral?

Periclase is a magnesium mineral that occurs naturally in contact metamorphic rocks and is a major component of most basic refractory bricks. It is a cubic form of magnesium oxide (MgO). ... The old term for the mineral is magnesia.