Several beige crystals of the very rare Ni-Zn vanadate mineral kolovratite from Mapimí (Mapimí Municipality, Durango, Mexico). Ex Vandenbroucke Museum collection from Waregem, Belgium. — Photo: David Hospital · CC BY 4.0
Kolovratite
Kolovratite is an IMA-recognized mineral species in the vanadate class, with the chemical formula (Ni,Zn)ₓ(VO₄)·nH₂O.
Key properties: Mohs hardness 2–3; Pale yellow streak; Vitreous luster.
IMA symbol Klv, IMA status: questionable, named in 1922.
Found in quartz schists and carbonaceous slates.
In honor of Lev Stanislovich Kolovrat-Chervinskii (1884–1921), Russian physicist and radiologist, Mineralogical Laboratory, Russian Academy of Science, St. Petersburg, Russia.
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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