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Pavlovskyite

A valid IMA mineral species
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08180010017361052034587.jpg
Pavlovskyite, etc.

Birkhin gabbro massif, Narin-Kunta, Irkutsk Oblast, Russia
08180010017361052034587.jpg
Pavlovskyite, etc.

Birkhin gabbro massif, Narin-Kunta, Irkutsk Oblast, Russia
08180010017361052034587.jpg
Pavlovskyite, etc.

Birkhin gabbro massif, Narin-Kunta, Irkutsk Oblast, Russia
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About PavlovskyiteHide

02918920017271951307345.jpg
Evgeny V. Pavlovsky
Formula:
Ca8(SiO4)2(Si3O10)
Colour:
White
Lustre:
Vitreous
Hardness:
6 - 6½
Specific Gravity:
2.97
Crystal System:
Orthorhombic
Name:
Named in honor of Evgeny Vladimirovich Pavlovsky (Евгений Владимирович Павловский) (9 (22) April 1901, Moscow, Russian Empire – 10 August 1982, Moscow, USSR), an outstanding geologist in the area of Eastern Siberia, in particular of the Baikal region. Natalyite is named after his wife.
This page provides mineralogical data about Pavlovskyite.


Unique IdentifiersHide

Mindat ID:
41146
Long-form identifier:
mindat:1:1:41146:0

IMA Classification of PavlovskyiteHide

Classification of PavlovskyiteHide

Strunz-mindat (2026):
9.BJ.70

9 : SILICATES (Germanates)
B : Sorosilicates
J : Sorosilicates with Si3O10, Si4O11, etc. anions; cations in octahedral [6] and greater coordination

Mineral SymbolsHide

As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.

SymbolSourceReference for Standard
PvsIMA–CNMNCWarr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43

Physical Properties of PavlovskyiteHide

Lustre:
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
Based on recorded range of RI values above.

Interference Colours:
The colours simulate birefringence patterns seen in thin section under crossed polars. They do not take into account mineral colouration or opacity.

Michel-Levy Bar The default colours simulate the birefringence range for a 30 µm thin-section thickness. Adjust the slider to simulate a different thickness.

Grain Simulation You can rotate the grain simulation to show how this range might look as you rotated a sample under crossed polars. Each grain retains its interference colour (retardation) while its brightness falls to black at extinction and reaches a maximum between extinction positions.

Surface Relief:
Moderate
Dispersion:
r > v, medium
Optical Extinction:
X = b; Y = c; Z = a.

Chemistry of PavlovskyiteHide

Mindat Formula:
Ca8(SiO4)2(Si3O10)
Element Weights:
Element% weight
Ca42.805 %
O38.448 %
Si18.748 %

Calculated from ideal end-member formula.
Elements listed:
Ca, O, Si - search for minerals with similar chemistry

Crystallography of PavlovskyiteHide

Crystal System:
Orthorhombic
Class (H-M):
mmm(2/m2/m2/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

Geological EnvironmentHide

Paragenetic Mode(s):
Paragenetic ModeEarliest Age (Ga)
Stage 3a: Earth’s earliest Hadean crust>4.50
9 : Lava/xenolith minerals (hornfels, sanidinite facies)
High-? alteration and/or metamorphism
31 : Thermally altered carbonate, phosphate, and iron formations

Type Occurrence of PavlovskyiteHide

Co-Type Localities:
ⓘ Birkhin gabbro massif (Ozernovskii), Narin-Kunta, Irkutsk Oblast, Russia
ⓘ Xenolith no. 1, Lakargi Mountain, Upper Chegem volcanic caldera (Verkhnechegemskaya caldera), Chegemsky District, Kabardino-Balkaria, Russia
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:
CuspidineDellaiteGaluskinite
Reference:
Galuskin, E. V., Gfeller, F., Savelyeva, V. B., Armbruster, T., Lazic, B., Galuskina, I. O., Tobbens, D. M., Zadov, A. E., Dzierzanowski, P., Pertsev, N. N., 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 (4) 503-512 doi:10.2138/am.2012.3970

Synonyms of PavlovskyiteHide

Other Language Names for PavlovskyiteHide

Common AssociatesHide

Associations Based on Photo Data:
2 photos of Pavlovskyite associated with Calcio-olivineCa2SiO4
2 photos of Pavlovskyite associated with HillebranditeCa2(SiO3)(OH)2
2 photos of Pavlovskyite associated with LarniteCa2SiO4
1 photo of Pavlovskyite associated with GaluskiniteCa7(SiO4)3(CO3)
1 photo of Pavlovskyite associated with DellaiteCa6Si3O11(OH)2

Related Minerals - Strunz-mindat GroupingHide

9.BJ.ArsenmedaiteMn2+6 As5+Si5O18(OH)Mon. 2/m
9.BJ.05OrientiteCa8Mn3+10(SiO4)3(Si3O10)3(OH)10 · 4H2O Orth. mmm(2/m2/m2/m)
9.BJ.10RosenhahniteHCa3[Si3O9(OH)]Tric. 1 : P1
9.BJ.15TrabzoniteCa4(Si3O9)(OH)2Orth. mm2 : Ama2
9.BJ.20Thalénite-(Y)Y3Si3O10FMon. 2/m : P21/b
9.BJ.25TiragalloiteMn2+4As5+Si3O12(OH)Mon. 2/m
9.BJ.30MedaiteMn2+6V5+Si5O18(OH)Mon. 2/m
9.BJ.35StrontioruiziteSr2Mn3+2Si4O11(OH)4 · 2H2OMon. 2 : B2
9.BJ.35RuiziteCa2Mn3+2[Si4O11(OH)2](OH)2 · 2H2OMon. 2
9.BJ.35Taniajacoite SrCaMn3+2Si4O11(OH)4 · 2H2OTric. 1
9.BJ.40Ardennite-(As)Mn2+4Al4(AlMg)(AsO4)(SiO4)2(Si3O10)(OH)6Orth. mmm(2/m2/m2/m)
9.BJ.40KannaniteCa4Al4(AlMg)(VO4)(SiO4)2(Si3O10)(OH)6Orth. mmm(2/m2/m2/m) : Pmmn
9.BJ.40AlpeiteCa4Mn3+2Al2(Mn3+Mg)(SiO4)2(Si3O10)(V5+O4)(OH)6Orth. mmm(2/m2/m2/m) : Pmmn
9.BJ.40Ardennite-(V)Mn2+4Al4(AlMg)(VO4)(SiO4)2(Si3O10)(OH)6Orth. mmm(2/m2/m2/m) : Pmmn
9.BJ.45KilchoaniteCa6(SiO4)(Si3O10)Orth. mmm(2/m2/m2/m)
9.BJ.50Prismatine(◻,Fe,Mg)(Mg,Al,Fe)5Al4Si2(Si,Al)2(B,Si,Al)(O,OH,F)22Orth. mmm(2/m2/m2/m) : Cmcm
9.BJ.50KornerupineMg3Al6(Si,Al,B)5O21(OH)Orth. mmm(2/m2/m2/m) : Cmcm
9.BJ.55ZunyiteAl13Si5O20(OH,F)18ClIso. 43m : F43m
9.BJ.60HubeiteCa2Mn2+Fe3+Si4O12(OH) · 2H2OTric. 1 : P1
9.BJ.65Cassagnaite(Ca,Mn2+)4(Fe3+,Mn3+,Al)4(V3+,Mg,Al)2(Si3O10)(SiO4)2(OH,O)8Orth. mmm(2/m2/m2/m) : Cmcm

Fluorescence of PavlovskyiteHide

In UV light:
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.

Internet Links for PavlovskyiteHide

References for PavlovskyiteHide

Localities for PavlovskyiteHide

Showing 4 localities.

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.
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Locality ListHide

- This locality has map coordinates listed. - This locality has estimated coordinates. ⓘ - Click for references and 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 (e.g. from pseudomorphs).

All localities listed without proper references should be considered as questionable.
Germany
 
  • Rhineland-Palatinate
    • Mayen-Koblenz
      • Vordereifel
        • Ettringen
          • Caspar quarry
Galuskin et al. (2016)
Russia (TL)
 
  • Irkutsk Oblast
    • Narin-Kunta
Williams et al. (2011) +2 other references
  • Kabardino-Balkaria
    • Chegemsky District
      • Upper Chegem volcanic caldera (Verkhnechegemskaya caldera)
Galuskin et al. (2012)
Williams et al. (2011) +1 other reference
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