Facts
- Chemical formula
- Ni₃Si₄O₁₀(OH)₂
- Crystal system
- Monoclinic
- Mohs hardness
- 2.0
- Density
- 3.31 g/cm³
- Number of elements
- 4
- IMA status
- Approved
- Type locality
- Bon Accord nickel deposit
- Named after
- Johannes Willemse
Sources: Wikidata (CC0), IMA list of minerals via Wikidata · Wikidata Q1170510