Angelellite
Angelellite is an IMA-recognized mineral species in the arsenate class, with the chemical formula Fe³⁺₄O₃(AsO₄)₂.
It crystallizes in the triclinic crystal system (space group P-1).
Key properties: Reddish brown streak; Adamantine to semimetallic luster; optically biaxial.
IMA symbol Agl, IMA status: approved, named in 1959.
Probably of exhalative origin, in tin ore.
It is found associated with Cassiterite, hematite.
The mineral was named to honor Dr. Victorio Angelelli (1908-), Argentinian mining geologist, Director of the Argentinian Geological Survey.
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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