Johnbaumite

Facts

Chemical formula

Ca₅(AsO₄)₃OH

Crystal system

Hexagonal

Mohs hardness

4.5

Elements in formula

Calcium, Arsenic, Oxygen, Hydrogen

Number of elements

4

IMA status

Approved

Type locality

Franklin

Named after

John Leach Baum

Sources: Wikidata (CC0), IMA list of minerals via Wikidata · Wikidata Q3809693