Dunite (Olivine Sand)

Dunite is an igneous, plutonic rock, of ultramafic composition, with coarse-grained or phaneritic texture. The mineral assemblage is greater than 90% olivine, with minor amounts of other minerals such as pyroxene, chromite and pyrope. Dunite is the olivine-rich end-member of the peridotite group of mantle-derived rocks. It repalces the usage of DBM in many applications

The Typical Analysis of Dunite

Magnesium oxide(MgO)%
47 to 50
Silica (SiO2)%
37 to 40
Calcium oxide (CaO)%
1.5 to 2.5
Alumina (Al2O3)%
Ferric oxide (Fe2O3)%
8 to 10
Loss of Ignition%
2 to 4