Facts
- Chemical formula
- Al₂OSiO₄
- Crystal system
- Orthorhombic
- Mohs hardness
- 7.0
- Density
- 3.68 g/cm³
- Number of elements
- 3
- IMA status
- Grandfathered
- Named after
- Benjamin Silliman Sr.
Sources: Wikidata (CC0), IMA list of minerals via Wikidata · Wikidata Q119632