Facts
- Chemical formula
- Ca₄Mn²⁺₃Si₈O₂₀(OH)₆·2H₂O
- Crystal system
- Hexagonal
- Number of elements
- 5
- IMA status
- Approved
- Type locality
- Wessels mine
- Named after
- Orlando Hammond Lyman
Sources: Wikidata (CC0), IMA list of minerals via Wikidata · Wikidata Q3886043