Lawsonite

Facts

Chemical formula

CaAl₂Si₂O₇(OH)₂·H₂O

Crystal system

Orthorhombic

Mohs hardness

7.5

Elements in formula

Calcium, Aluminium, Silicon, Oxygen, Hydrogen

Number of elements

5

IMA status

Grandfathered

Named after

Andrew Lawson

Sources: Wikidata (CC0), IMA list of minerals via Wikidata · Wikidata Q424354