Grossite

A variety of Minerals

Grossite specimen - rock identification

What is Grossite?

Grossite is a calcium aluminium oxide mineral with formula CaAl4O7. It is a colorless to white vitreous mineral which crystallizes in the monoclinic crystal system. Grossite was first described 1994 for an occurrence in the Hatrurim Formation of Israel. It was named for Shulamit Gross (1923–2012) of the Geological Survey of Israel. It occurs within high temperature metamorphosed impure limestone of the Hatrurim Formation and also within calcium-aluminium rich inclusions in chondritic meteorites. Associated minerals in the Hatrurium include brownmillerite, mayenite and larnite. In meteorites it occurs with perovskite, melilite, hibonite, spinel and calcium rich pyroxene.

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Grossite Localities Map

See where Grossite is found with a localities map, collecting zones, and geology context. Generate a sample map preview below.

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North ZoneCentral RidgeSouth Basin

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Quick Facts

Physical Properties

Color
White to colourless
Density
2.88 g/cm³
Streak
White

Chemical Properties

Chemical Formula
CaAl4O7
Elements
Al, Ca, O
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