Plumosite (Pb2Sb2S5) is a variety of boulangerite. It is called “plumosite” due to its plumose (feathery) habit and was thought to be a different mineral. It is also called jamesonite, which is a steel-gray mineral, of metallic luster, commonly fibrous and massive. It is a sulphide of antimony and lead, with a little iron. — Photo: Darla Sondrol · CC0
Plumosite
A historical catch-all for 'feather ores' — fine capillary sulfosalts, usually boulangerite, jamesonite or zinkenite.
Intro adapted from Wikipedia (CC BY-SA).
Plumosite is an IMA-recognized mineral species in the sulfosalt class, with the chemical formula Pb₂Sb₂S₅.
IMA symbol Plu, IMA status: questionable, named in 1845.
Index entry. This entry combines official IMA/RRUFF species data with published physical-property data and a Wikipedia introduction — a full written entry hasn’t been published yet.
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