PCM
Ultramafic rocks

OKUM-NP

Komatiites are presently no longer formed on Earth. This reference material gives a window into the very beginnings of our planet.
Pressed powder pellets
matrix matched
nano-particulate
ultrahomogeneous
extremely pure
binder free
Classification
Processed Material
Category
Ultramafic rocks
Location
Serpentine Mountain McArthur Township
Matrix
Komatiite
Assigned values
Major elements, Trace elements
Field of application
Igneous petrology, Bulk geochemistry
Suitable for
Files
Product Information Sheet

Ultramafic rocks

Ultramafic rocks are characterised by very low silica (SiO2) content of <45 m/m%. and low potassium. Their principal mineralogy is comprised of Mg and Fe-rich minerals such as pyroxenes and olivine. The Earth's mantle consists of ultramafic rocks. Another term used to describe these rocks is ultrabasic, which includes rocks, that have a low silica content, but are not high in Mg and Fe i.e. carbonatites and ultrapotassic igneous rocks.