Thaumasite

Facts

Chemical formula

Ca₃Si(OH)₆(SO₄)(CO₃)·12H₂O

Crystal system

Hexagonal

Mohs hardness

3.5

Elements in formula

Calcium, Silicon, Oxygen, Hydrogen, Sulfur, Carbon

Number of elements

6

IMA status

Grandfathered

Type locality

Åreskutan

Named after

surprise

Sources: Wikidata (CC0), IMA list of minerals via Wikidata · Wikidata Q2706126