Images
Formula: K3Cu
Arsenate
Crystal System: Monoclinic
Specific gravity: 4.26 calculated
Hardness: 3
Streak: Light green
Colour: Bright emerald-green to light green
Common impurities: Na,P,Mg,Fe(III),(Ca,Zn)
Environments
Dmisokolovite is a relatively new mineral, approved in 2013 and to date (March 2024) reported only from the
type locality.
Localities
At the type locality, the Arsenatnaya fumarole, Second scoria cone, Northern Breakthrough, Great Fissure eruption,
Tolbachik Volcanic field, Milkovsky District, Kamchatka Krai, Russia, two new (in 2013) minerals,
shchurovskyite and dmisokolovite, were found in sublimate,
associated with one another and with johillerite,
bradaczekite, tilasite,
melanarsite, tenorite,
hematite, aphthitalite,
langbeinite and orthoclase.
They may occur as sublimate incrustations and/or the product of reaction between rock and volcanic gas on the surface
of basalt scoria in the
active fumarole.
Dmisokolovite forms tabular, prismatic or dipyramidal crystals up to 0.2 mm in size, commonly combined in
clusters or crusts up to 0.7 cm × 1.5 cm across. It is transparent with a vitreous lustre
(MM 79.7.1737-1753, HOM).
Dmisokolovite from the Arsenatnaya fumerole -
Image
Back to Minerals