Facts
- Chemical formula
- Zn²⁺x/₂(Mn₄+₁-xMn³⁺x)O₂*yH₂O
- Crystal system
- Monoclinic
- Number of elements
- 4
- IMA status
- Grandfathered
- Type locality
- Sterling Hill
- Named after
- Samuel Woodruff
Sources: Wikidata (CC0), IMA list of minerals via Wikidata · Wikidata Q4020789