Facts
- Chemical formula
- Ca₃Mg(SiO₄)₂
- Crystal system
- Monoclinic
- Number of elements
- 4
- IMA status
- Grandfathered
- Type locality
- Wet Weather quarry, Sky Blue Hill
- Named after
- Herbert E. Merwin
Sources: Wikidata (CC0), IMA list of minerals via Wikidata · Wikidata Q3855241