Prosopite

Facts

Chemical formula

CaAl₂(F,OH)₈

Crystal system

Monoclinic

Mohs hardness

4.5

Elements in formula

Calcium, Aluminium, Fluorine, Oxygen, Hydrogen

Number of elements

5

IMA status

Grandfathered

Named after

mask

Sources: Wikidata (CC0), IMA list of minerals via Wikidata · Wikidata Q3924083