Yazganite
Yazganite is an IMA-recognized mineral species in the arsenate class, with the chemical formula NaMgFe³⁺₂(AsO₄)₃·H₂O.
It crystallizes in the monoclinic crystal system (space group C2/c). It is a member of the Alluaudite structural group.
Key properties: Mohs hardness 5; specific gravity 4.18; Bright brown to yellow-gray streak; Adamantine luster; optically biaxial.
IMA symbol Yaz, IMA status: approved, named in 2003.
A hydrothermal mineral in fissures cutting porphyritic andesite in a stratovolcano.
It is found associated with Cassiterite, hematite, magnetite, orpiment, realgar, tridymite.
The mineral was named to honor Dr. Evren Yazgan (b. 1943), a geologist who found the first specimens.
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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