Moreover, corundum and periclase have not been detected in space dust before.
From the economist.com
Periclase is usually found in marble produced by metamorphism of dolomiticlimestones.
From the en.wikipedia.org
Such periclase is an important product in refractory materials.
From the en.wikipedia.org
Periclase occurs naturally in contactmetamorphic rocks and is a major component of most basic refractory bricks.
From the en.wikipedia.org
Similar to the production of lime, magnesite can be burned in the presence of charcoal to produce MgO, otherwise known as periclase.
From the en.wikipedia.org
More examples
A white solid mineral that occurs naturally as periclase; a source of magnesium
Periclase 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).
A crystalline mineral, magnesia, MgO, the equivalent of which may be present in portland-cement clinker, portland cement, and other materials, such as open-hearth slags and certain basic refractories.
Natural magnesia in nodular form, formed by heating.