Allactite

Facts

Chemical formula

Mn²⁺₇(AsO₄)₂(OH)₈

Crystal system

Monoclinic

Mohs hardness

4.5

Elements in formula

Manganese, Arsenic, Oxygen, Hydrogen

Number of elements

4

IMA status

Approved

Type locality

Moss mine, Nordmark Odal field

Sources: Wikidata (CC0), IMA list of minerals via Wikidata · Wikidata Q1070618