Hydroniumpharmacosiderite
Hydroniumpharmacosiderite is an IMA-recognized mineral species in the arsenate class, with the chemical formula (H₃O)Fe³⁺₄(AsO₄)₃(OH)₄·4H₂O.
It crystallizes in the cubic crystal system (space group P-43m). It is a member of the Pharmacosiderite structural group.
Key properties: Mohs hardness 2–3; specific gravity 2.559; White streak; Vitreous luster.
IMA symbol Hpsd, IMA status: approved, named in 2010.
Signifies the H3O, hydronium, analog of 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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