Karpovite

karpovite

shcherbinaite

pauflerite

markhininite

Images

Formula: Tl₂VO(SO)₂(H₂O)
Sulphate, thallium- and vanadium- bearing mineral
Crystal System: Monoclinic
Specific gravity: 4.743 calculated
Hardness: 2
Colour: White, light blue
Environments

Fumeroles

Karpovite was approved in 2013, but to date (June 2025) it has been reported only from the type locality.

Localities

At the type locality, the First scoria cone, Northern Breakthrough, Great Fissure eruption, Tolbachik volcano, Kamchatka Krai, Russia, karpovite was found in a fumarole as bundles of white, needle-like crystals associated with shcherbinaite, pauflerite, bobjonesite, markhininite, evdokimovite and microcrystalline magnesium, aluminium, iron and sodium sulphates (MM 78.1699-1709).
Karpovite from the Tolbachik Volcano - Image

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