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Pavlovskyite

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Formula:
Ca8(SiO4)2(Si3O10)
Colour:
White
Lustre:
Vitreous
Hardness:
6 - 6½
Specific Gravity:
2.97
Crystal System:
Orthorhombic
Name:
Named after V.E. Pavlovsky (1901–1982), an outstanding geologist in the area of Eastern Siberia, in particular of the Baikal region.
This page provides mineralogical data about Pavlovskyite.


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Classification of PavlovskyiteHide

Approved
Approval Year:
2011

Physical Properties of PavlovskyiteHide

Vitreous
Transparency:
Transparent
Colour:
White
Comment:
Colourless in thin section
Streak:
White
Hardness:
6 - 6½ on Mohs scale
Hardness:
VHN20=520 kg/mm2 - Vickers
Tenacity:
Brittle
Cleavage:
Poor/Indistinct
Uneven on {001}
Fracture:
Irregular/Uneven
Density:
2.97(2) g/cm3 (Measured)    2.997(1) g/cm3 (Calculated)

Optical Data of PavlovskyiteHide

Type:
Biaxial (-)
RI values:
nα = 1.656(2) nβ = 1.658(2) nγ = 1.660(2)
2V:
Measured: 80° (5), Calculated: 89.9°
Max Birefringence:
δ = 0.004
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
Moderate
Dispersion:
r > v, medium

Chemical Properties of PavlovskyiteHide

Formula:
Ca8(SiO4)2(Si3O10)

Crystallography of PavlovskyiteHide

Crystal System:
Orthorhombic
Class (H-M):
mmm (2/m 2/m 2/m) - Dipyramidal
Space Group:
Pbcn
Setting:
Pbcn
Cell Parameters:
a = 5.0849(1) Å, b = 11.4116(2) Å, c = 28.6304(8) Å
Ratio:
a:b:c = 0.446 : 1 : 2.509
Unit Cell V:
1662.71 ų
Z:
4

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
3.607 (39)
3.046 (67)
2.835 (100)
2.689 (70)
2.438 (18)
1.948 (38)
1.898 (18)
1.805 (14)

Type Occurrence of PavlovskyiteHide

General Appearance of Type Material:
Forms rims together with dellaite around galuskinite veins cutting calcio-olivine skarns in the Birkhin gabbro massif AND in cuspidine zones of altered carbonate xenoliths in the ignimbrites of the Upper Chegem caldera
Place of Conservation of Type Material:
Fersman Mineralogical Museum of the Russian Academy of Sciences.
Catalogue no. of holotype (Birkhin): 4023/1; catalogue no. of co-type (Lakargi): 4024/1.
Geological Setting of Type Material:
The Birkhin gabbro massif.
Altered carbonate xenoliths in the ignimbrites of the Upper Chegem caldera (North Caucasus).
Associated Minerals at Type Locality:

Synonyms of PavlovskyiteHide

Fluorescence of PavlovskyiteHide

Non-fluorescent.

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 PavlovskyiteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Galuskin, E.V., Lazic, B., Savelyeva, V.B., Armbruster, T., Galuskina, I.O., Zadov, A.E., Dzierz˙anowski, P., Pertsev, N.N., and Gazeev, V.M. (2011): Pavlovskyite, IMA 2010-063. CNMNC Newsletter 8, 290; Mineralogical Magazine 75, 289-294.
Galuskin, E.V., Gfeller, F., Savelyeva, V.B., Armbruster, T., Lazic, B., Galuskina, I.O., Többens, D.M., Zadov, A.E., Dzierżanowski, P., Pertsev, N.N., M. Gazeev, V.M. (2012): Pavlovskyite Ca8(SiO4)2(Si3O10) - a new mineral of altered silicate-carbonate xenoliths from the two Russian type localities: Birkhin massif, Baikal Lake area and Upper Chegem caldera, North Caucasus. American Mineralogist, 97, 503-512.

Internet Links for PavlovskyiteHide

Localities for PavlovskyiteHide

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.
Germany
 
  • Rhineland-Palatinate
    • Mayen
      • Ettringen
        • Bellerberg volcano
          • Caspar quarry
Galuskin, E.V., Krüger, B., Krüger, H., Blass, G., Widmer, R., Galuskina, I.O. (2016): Wernerkrauseite, CaFe3+2Mn4+O6 - the first non-stoichiometric post-spinel mineral, from Bellerberg volcano, Eifel, Germany. European Journal of Mineralogy, 28, 485-493
Russia (TL)
 
  • Eastern-Siberian Region
    • Prebaikalia (Pribaikal'e)
      • Irkutskaya Oblast'
        • Narin-Kunta
Galuskin, E.V., Gfeller, F., Savelyeva, V.B., Armbruster, T., Lazic, B., Galuskina, I.O., Többens, D.M., Zadov, A.E., Dzierżanowski, P., Pertsev, N.N., M. Gazeev, V.M. (2012): Pavlovskyite Ca8(SiO4)2(Si3O10) - a new mineral of altered silicate-carbonate xenoliths from the two Russian type localities: Birkhin massif, Baikal Lake area and Upper Chegem caldera, North Caucasus. American Mineralogist, 97, 503-512.
  • Northern Caucasus Region
    • Kabardino-Balkarian Republic
      • Baksan Valley
        • Upper Chegem volcanic caldera (Verkhnechegemskaya caldera)
Galuskin, E.V., Gfeller, F., Savelyeva, V.B., Armbruster, T., Lazic, B., Galuskina, I.O., Többens, D.M., Zadov, A.E., Dzierżanowski, P., Pertsev, N.N., M. Gazeev, V.M. (2012): Pavlovskyite Ca8(SiO4)2(Si3O10) - a new mineral of altered silicate-carbonate xenoliths from the two Russian type localities: Birkhin massif, Baikal Lake area and Upper Chegem caldera, North Caucasus. American Mineralogist, 97, 503-512.
Galuskin, E.V., Gfeller, F., Savelyeva, V.B., Armbruster, T., Lazic, B., Galuskina, I.O., Többens, D.M., Zadov, A.E., Dzierżanowski, P., Pertsev, N.N., M. Gazeev, V.M. (2012): Pavlovskyite Ca8(SiO4)2(Si3O10) - a new mineral of altered silicate-carbonate xenoliths from the two Russian type localities: Birkhin massif, Baikal Lake area and Upper Chegem caldera, North Caucasus. American Mineralogist, 97, 503-512.
Mineral and/or Locality  
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