Dmisokolovite
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About Dmisokolovite
Dmitry I. Sokolov
Formula:
K3Cu5AlO2(AsO4)4
Colour:
bright emerald-green to light green
Lustre:
Vitreous
Hardness:
3
Specific Gravity:
4.26 (Calculated)
Crystal System:
Monoclinic
Name:
Russian geologist and mineralogist Dmitry Ivanovich Sokolov (1788 – 1 December 1852), Leningrad Mining Institute.
Unique combination of elements.
Structurally related to shchurovskyite in terms of general topology. Anionic stochiometry identical to that of shchurovskyite. The quasi-framework consists of arsenate tetrahedra and Cu- and Al-centered polyhedra; K atoms are located in channels.
Structurally related to shchurovskyite in terms of general topology. Anionic stochiometry identical to that of shchurovskyite. The quasi-framework consists of arsenate tetrahedra and Cu- and Al-centered polyhedra; K atoms are located in channels.
Classification of Dmisokolovite
Physical Properties of Dmisokolovite
Vitreous
Transparency:
Transparent
Colour:
bright emerald-green to light green
Streak:
Light green
Hardness:
3 on Mohs scale
Tenacity:
Brittle
Cleavage:
Imperfect/Fair
In one direction
In one direction
Fracture:
Irregular/Uneven
Density:
4.26 g/cm3 (Calculated)
Optical Data of Dmisokolovite
Type:
Biaxial (-)
RI values:
nα = 1.758(7) nβ = 1.782(7) nγ = 1.805(8)
2V:
Measured: 85° (5)
Max Birefringence:
δ = 0.047
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
and does not take into account mineral colouration.
Surface Relief:
Very High
Chemical Properties of Dmisokolovite
Formula:
K3Cu5AlO2(AsO4)4
Common Impurities:
Na,P,Mg,Fe(III),(Ca,Zn)
Crystallography of Dmisokolovite
Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Space Group:
B2/b
Setting:
C2/c
Cell Parameters:
a = 17.0848(12) Å, b = 5.7188(4) Å, c = 16.5332(12) Å
β = 91.716(6)°
β = 91.716(6)°
Ratio:
a:b:c = 2.987 : 1 : 2.891
Unit Cell V:
1,614.64 ų (Calculated from Unit Cell)
Z:
4
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 5.433 | (84) |
| 3.274 | (45) |
| 2.921 | (66) |
| 2.853 | (58) |
| 2.733 | (100) |
| 2.451 | (47) |
| 2.366 | (45) |
Comments:
From Type Description.
Type Occurrence of Dmisokolovite
General Appearance of Type Material:
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
Place of Conservation of Type Material:
Type material is deposited in the collections of the Fersman Mineralogical Museum of the Russian Academy of Sciences, Moscow, Russia, registration number 4412/1
Geological Setting of Type Material:
Fumarole
Associated Minerals at Type Locality:
Reference:
Pekov, I.V., Zubkova, N.V., Belakovskiy, D.I., Yapaskurt, V.O., Vigasina, M.F., Sidorov, E.G., Pushcharovsky, D.Y. (2015) New arsenate minerals from the Arsenatnaya fumarole, Tolbachik volcano, Kamchatka, Russia. IV. Shchurovskyite, K2CaCu6O2(AsO4)4 and dmisokolovite, K3Cu5AlO2(AsO4)4. Mineralogical Magazine: 79(7): 1737-1753.
Synonyms of Dmisokolovite
Other Information
Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.
References for Dmisokolovite
Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Pekov, I.V., Zubkova, N.V., Belakovskiy, D.I., Yapaskurt, V.O., Vigasina, M.F., Sidorov, E.G., Pushcharovsky, D.Y. (2013) Dmisokolovite, IMA 2013-079. CNMNC Newsletter No. 18, December 2013, page 3253; Mineralogical Magazine: 77: 3249-3258.
Pekov, I.V., Zubkova, N.V., Belakovskiy, D.I., Yapaskurt, V.O., Vigasina, M.F., Sidorov, E.G., Pushcharovsky, D.Y. (2015) New arsenate minerals from the Arsenatnaya fumarole, Tolbachik volcano, Kamchatka, Russia. IV. Shchurovskyite, K2CaCu6O2(AsO4)4 and dmisokolovite, K3Cu5AlO2(AsO4)4. Mineralogical Magazine: 79(7): 1737-1753.
Internet Links for Dmisokolovite
mindat.org URL:
https://www.mindat.org/min-45968.html
Please feel free to link to this page.
Please feel free to link to this page.
External Links:
Mineral Dealers:
Localities for Dmisokolovite
symbol to view information about a locality.
The Locality List
- This locality has map coordinates listed.
- This locality has estimated coordinates.
ⓘ - Click for further information on this occurrence.
? - Indicates mineral may be doubtful at this locality.
- Good crystals or important locality for species.
- World class for species or very significant.
(TL) - Type Locality for a valid mineral species.
(FRL) - First Recorded Locality for everything else (eg varieties).
All localities listed without proper references should be considered as questionable.
Russia (TL) | |
| Pekov, I.V., Zubkova, N.V., Belakovskiy, D.I., Yapaskurt, V.O., Vigasina, M.F., Sidorov, E.G. and Pushcharovsky, D.Y. (2013) Dmisokolovite, IMA 2013-079. CNMNC Newsletter No. 18, December 2013, page 3253; Mineralogical Magazine, 77, 3249-3258. |
Arsenatnaya fumarole, Second scoria cone, Northern Breakthrough, Great Fissure eruption, Tolbachik volcano, Kamchatka Oblast', Far-Eastern Region, Russia