Plumbopharmacosiderite
Plumbopharmacosiderite is an IMA-recognized mineral species in the arsenate class, with the chemical formula Pb₀.₅Fe³⁺₄(AsO₄)₃(OH)₄·5H₂O.
It crystallizes in the cubic crystal system (space group P-43m). It is a member of the Pharmacosiderite structural group.
Key properties: Mohs hardness 2.5–3; specific gravity 2.89; White streak; Vitreous to resinous luster.
IMA symbol Ppsd, IMA status: approved, named in 2017.
On fracture surfaces and formed by weathering of primary Pb-Fe-sulfide minerals.
It is found associated with Arsenopyrite, scorodite, beudantite, segnitite, marcasite, galena, sphalerite, mimetite.
The prefix plumbo for the essential lead component and relation to pharmacosiderite.
Index entry. This entry combines official IMA/RRUFF species data with published physical-property data — a full written entry hasn’t been published yet.
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