Heftetjernite

Facts

Crystal system

Monoclinic

Mohs hardness

4.5

Density

6.44 g/cm³

IMA status

Approved

Type locality

Heftetjern pegmatite

Named after

Heftetjern pegmatite

Sources: Wikidata (CC0), IMA list of minerals via Wikidata · Wikidata Q17448737