Ekatite
Ekatite is an IMA-recognized mineral species in the silicate class, with the chemical formula (Fe³⁺,Fe²⁺,Zn)₁₂(AsO₃)₆(AsO₃,SiO₃OH)₂(OH)₆.
It crystallizes in the hexagonal crystal system (space group P6_3mc). It is a member of the Ellenbergerite structural group.
Key properties: Mohs hardness 3; specific gravity 4.061; Brown streak; Vitreous luster; optically uniaxial.
IMA symbol Ekt, IMA status: approved, named in 1998.
Found in the oxidized portion of a polymetallic sulfide mineral deposit.
It is found associated with Chalcocite, quartz.
The mineral was named to honor Namibian mining engineer Dieter Ekat (1935-1996).
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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