No Comments

Magnesium

A light, silvery-grey and very common metal. Symbol, Mg. Its principal ore is magnesite and dolomite

No Comments

Magma

The extremely hot volcanic fluid which forms rock when cooled

No Comments

Mafic

Dark igneous rocks typically high in iron and magnesium

No Comments

Macro

A prefix meaning large, the opposite of micro

No Comments

Matrix

A term synonymous with host rock, country rock and gangue rock. The non-target rock surrounding the target mineral