Facts
- Chemical formula
- AgPbAsS₃
- Crystal system
- Monoclinic
- Density
- 5.49 g/cm³
- Number of elements
- 4
- IMA status
- Grandfathered
- Type locality
- Lengenbach quarry
- Named after
- John Edward Marr
Sources: Wikidata (CC0), IMA list of minerals via Wikidata · Wikidata Q1058765