Dokuchaevite
Dokuchaevite is an IMA-recognized mineral species in the vanadate class, with the chemical formula Cu₈O₂(VO₄)₃Cl₃.
It crystallizes in the triclinic crystal system (space group P-1).
Key properties: Mohs hardness 2; specific gravity 4.142; Reddish black streak; Almost adamantine luster.
IMA symbol Dok, IMA status: approved, named in 2018.
Forms as a sublimate at an active volcanic fumarole.
It is found associated with Kamchatkite, euchlorine, langbeinite, alumoklyuchevskite, lyonsite, pseudolyonsite, tenorite, hematite, anhydrite.
The mineral was named to honor Russian Professor Vasily V. Dokuchaev (1846-1903), a founder of Soil Science who lectured on mineralogy and crystallography at St. Petersburg State University.
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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