Majorite

A variety of Minerals

Majorite specimen - rock identification

What is Majorite?

Majorite is a type of garnet mineral found in the mantle of the Earth. Its chemical formula is Mg3(MgSi)(SiO4)3. It is distinguished from other garnets in having Si in octahedral as well as tetrahedral coordination. Majorite was first described in 1970 from the Coorara Meteorite of Western Australia and has been reported from various other meteorites in which majorite is thought to result from an extraterrestrial high pressure shock event. Mantle derived xenoliths containing majorite have been reported from potassic ultramafic magmas on Malaita Island on the Ontong Java Plateau Southwest Pacific.

Majorite Market Value Calculator

Estimate the market value of Majorite using size, quality, and finish. This preview calculator is for quick context and is not a formal appraisal.

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Majorite Localities Map

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

Map preview
North ZoneCentral RidgeSouth Basin

Interactive map layers and collecting notes are available in the app.

Quick Facts

Physical Properties

Color
Brown, yellow
Hardness (Mohs)
7 - 7.5
Streak
White

Chemical Properties

Chemical Formula
Mg3(MgSi)(SiO4)3
Elements
Mg, O, Si
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