Allophane

Facts

Chemical formula

Al₂O₃(SiO₂)₁.₃-₂.₀·2.5-3.0H₂O

Mohs hardness

3.0

Elements in formula

Aluminium, Oxygen, Silicon, Hydrogen

Number of elements

4

IMA status

Grandfathered

Named after

visual appearance

Sources: Wikidata (CC0), IMA list of minerals via Wikidata · Wikidata Q429712