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Shchurovskyite

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About ShchurovskyiteHide

Grigory E. Shchurovsky
Formula:
K2CaCu6O2(AsO4)4
Colour:
olive-green or olive drab
Lustre:
Vitreous
Hardness:
3
Specific Gravity:
4.28 (Calculated)
Crystal System:
Monoclinic
Name:
Named in honor of Grigory Efimovich Shchurovsky (Григорий Ефимович Щуровский) (30 January (11 February) 1803, Moscow, Russian Empire - 20 March (1 April) 1884, Moscow, Russian Empire), geologist, paleontologist, and professor of geology and mineralogy of Moscow University for nearly fifty years.
Chemically related to calcioandyrobertsite, the second K-Ca-Cu-As mineral.

Structurally related to dmisokolovite in terms of general topology. The quasi-framework contains arsenate tetrahedra and Cu-centered polyhedra, with K and Ca in channels.


Classification of ShchurovskyiteHide

Approved
Approval Year:
2013
First Published:
2015

Physical Properties of ShchurovskyiteHide

Vitreous
Transparency:
Transparent
Colour:
olive-green or olive drab
Streak:
Pale greenish
Hardness:
Tenacity:
Brittle
Cleavage:
None Observed
Parting:
None observed
Fracture:
Irregular/Uneven
Density:
4.28 g/cm3 (Calculated)

Optical Data of ShchurovskyiteHide

Type:
Biaxial (+)
RI values:
nα = 1.795(5) nβ = 1.800(5) nγ = 1.810(6)
2V:
Measured: 70° (15)
Max Birefringence:
δ = 0.015
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
Very High

Chemical Properties of ShchurovskyiteHide

Formula:
K2CaCu6O2(AsO4)4
Common Impurities:
P,S,Zn,(Rb,Al)

Crystallography of ShchurovskyiteHide

Crystal System:
Monoclinic
Class (H-M):
2 - Sphenoidal
Space Group:
B2
Setting:
C2
Cell Parameters:
a = 17.2856(9) Å, b = 5.6705(4) Å, c = 8.5734(6) Å
β = 92.953(6)°
Ratio:
a:b:c = 3.048 : 1 : 1.512
Unit Cell V:
839.23 ų (Calculated from Unit Cell)
Z:
2

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
5.400(32)
3.759(28)
2.974(32)
2.842(47)
2.757(63)
2.373(36)
2.297(31)
Comments:
From Type Description.

Type Occurrence of ShchurovskyiteHide

General Appearance of Type Material:
coarse tabular or prismatic crystals up to 0.15 mm in size or anhedral grains forming parallel aggregates and crusts up to 1.5 cm × 2 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 4421/1
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 ShchurovskyiteHide

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 ShchurovskyiteHide

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) Shchurovskyite, IMA 2013-078. 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 ShchurovskyiteHide

Localities for ShchurovskyiteHide

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) Shchurovskyite, IMA 2013-078. CNMNC Newsletter No. 18, December 2013, page 3253; Mineralogical Magazine, 77, 3249-3258.
Mineral and/or Locality  
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