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Dmisokolovite

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About DmisokoloviteHide

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.


Classification of DmisokoloviteHide

Approved
Approval Year:
2013
First Published:
2015

Physical Properties of DmisokoloviteHide

Vitreous
Transparency:
Transparent
Colour:
bright emerald-green to light green
Streak:
Light green
Hardness:
Tenacity:
Brittle
Cleavage:
Imperfect/Fair
In one direction
Fracture:
Irregular/Uneven
Density:
4.26 g/cm3 (Calculated)

Optical Data of DmisokoloviteHide

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.
Surface Relief:
Very High

Chemical Properties of DmisokoloviteHide

Formula:
K3Cu5AlO2(AsO4)4
Common Impurities:
Na,P,Mg,Fe(III),(Ca,Zn)

Crystallography of DmisokoloviteHide

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)°
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 DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
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 DmisokoloviteHide

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 DmisokoloviteHide

Other InformationHide

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 DmisokoloviteHide

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 DmisokoloviteHide

Localities for DmisokoloviteHide

This map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.

Locality ListHide

- 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). Struck out - Mineral was erroneously reported from this locality. Faded * - Never found at this locality but inferred to have existed at some point in the past (eg from pseudomorphs.)

All localities listed without proper references should be considered as questionable.
Russia (TL)
 
  • Far-Eastern Region
    • Kamchatka Oblast'
      • Tolbachik volcano
        • Great Fissure eruption (Main Fracture)
          • Northern Breakthrough (North Breach)
            • Second scoria cone
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.
Mineral and/or Locality  
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