Facts
- Chemical formula
- MgO
- Crystal system
- Cubic
- Mohs hardness
- 5.5
- Density
- 3.63 g/cm³
- Number of elements
- 2
- IMA status
- Grandfathered
- Type locality
- Mount Somma
- Named after
- peri-
Sources: Wikidata (CC0), IMA list of minerals via Wikidata · Wikidata Q426635