Humberstonite

Facts

Chemical formula

K₃Na₇Mg₂(SO₄)₆(NO₃)₂·6H₂O

Crystal system

Trigonal

Mohs hardness

2.5

Elements in formula

Potassium, Sodium, Magnesium, Sulfur, Oxygen, Nitrogen, Hydrogen

Number of elements

7

IMA status

Approved

Named after

James Thomas Humberstone

Sources: Wikidata (CC0), IMA list of minerals via Wikidata · Wikidata Q1967651