Vochtenite
Vochtenite is an IMA-recognized mineral species in the phosphate class, with the chemical formula Fe²⁺Fe³⁺(UO₂)₄(PO₄)₄(OH)·12-13H₂O.
It crystallizes in the monoclinic crystal system.
Key properties: Mohs hardness 2.5; specific gravity 3.65; Pale brown streak; Bronzy luster; optically biaxial.
IMA symbol Voc, IMA status: approved, named in 1987.
A rare secondary mineral found in the oxidized zone of a uranium-bearing Cu–Sn hydrothermal mineral deposit.
It is found associated with Bassetite.
The mineral was named to honor Professor Renaud F.C. Vochten (1933–), State University, Antwerp, Belgium, uranium mineralogist, who discovered the mineral.
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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