Sapphirine

Facts

Chemical formula

Mg₄(Mg₃Al₉)O₄[Si₃Al₉O₃₆]

Crystal system

Monoclinic

Mohs hardness

7.5

Elements in formula

Magnesium, Aluminium, Oxygen, Silicon

Number of elements

4

IMA status

Grandfathered

Named after

sapphire

Sources: Wikidata (CC0), IMA list of minerals via Wikidata · Wikidata Q419794