Vermiculite

Facts

Chemical formula

Mg₀.₇(Mg,Fe,Al)₆(Si,Al)₈O₂₀(OH)₄ * 8H₂O

Crystal system

Monoclinic

Mohs hardness

1.3

Density

2.55 g/cm³

Elements in formula

Magnesium, Iron, Aluminium, Silicon, Oxygen, Hydrogen

Number of elements

6

IMA status

Grandfathered

Type locality

Millbury

Named after

worm

Sources: Wikidata (CC0), IMA list of minerals via Wikidata · Wikidata Q194358