Achyrophanite
A straw-yellow potassium-iron arsenate recognized in 2018; its name comes from the Greek for 'appearing like straw'.
Intro adapted from Wikipedia (CC BY-SA).
Achyrophanite is an IMA-recognized mineral species in the arsenate class, with the chemical formula (K,Na)₃(Fe³⁺,Ti,Al,Mg)₅O₂(AsO₄)₅.
It crystallizes in the orthorhombic crystal system (space group P222_1).
IMA symbol Aph, IMA status: approved, named in 2018.
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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