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Vlasovite

A valid IMA mineral species
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About VlasoviteHide

03303510015229625725968.jpg
Kuzma A. Vlasov
Formula:
Na2ZrSi4O11
Colour:
Colorless, honey-brown
Lustre:
Vitreous, Greasy, Pearly
Hardness:
6
Specific Gravity:
2.92 - 2.97
Crystal System:
Monoclinic
Name:
Named in honor of Kuzma Alekseevich Vlasov (Кузьма Алексеевич Власов) (1 (14) November 1905, Nikolaevka, Tambov Province, Russian Empire - 29 September 1964, Moscow, USSR), mineralogist and geochemist, founder of the Institute of Mineralogy (Moscow).
Seems to be related to khurayyimite"; the two are suggesteed to belong to the same group.

The two minerals can be described using geometrical repeat unit of cTr = 2T4 3T4 and topological repeat unit of cVr = 2V2 3V2.


Unique IdentifiersHide

Mindat ID:
4196
Long-form identifier:
mindat:1:1:4196:2
GUID
(UUID V4):
e7e0931d-1f7b-4e4b-b725-f19b5b7d1e0e

IMA Classification of VlasoviteHide

Classification of VlasoviteHide

9.DM.25

9 : SILICATES (Germanates)
D : Inosilicates
M : Inosilicates with 6-periodic single chains
66.2.2.1

66 : INOSILICATES Double-Width,Unbranched Chains,(W=2)
2 : Amphiboles - Ca subgroup
14.10.5

14 : Silicates not Containing Aluminum
10 : Silicates of Zr or Hf

Mineral SymbolsHide

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

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

Physical Properties of VlasoviteHide

Vitreous, Greasy, Pearly
Transparency:
Translucent
Comment:
highly vitreous to pearly on cleavage surfaces.
Colour:
Colorless, honey-brown
Hardness:
Hardness:
VHN100=770 - Vickers
Cleavage:
Distinct/Good
{010}, good; {h0l}, poor.
Fracture:
Irregular/Uneven, Conchoidal
Density:
2.92 - 2.97 g/cm3 (Measured)    3.07 g/cm3 (Calculated)

Optical Data of VlasoviteHide

Type:
Biaxial (-)
RI values:
nα = 1.607(3) nβ = 1.623(3) nγ = 1.628(3)
2V:
Measured: 40° to 56°
Max Birefringence:
δ = 0.021
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
Moderate
Dispersion:
r < v

Chemistry of VlasoviteHide

Mindat Formula:
Na2ZrSi4O11

Crystallography of VlasoviteHide

Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Space Group:
B2/b
Setting:
C2/c
Cell Parameters:
a = 11.0390(5) Å, b = 10.0980(4) Å, c = 8.5677(4) Å
β = 100.313(1)°
Ratio:
a:b:c = 1.093 : 1 : 0.848
Unit Cell V:
939.6 ų
Z:
4
Twinning:
Twin plane {010}, uncommon.

Crystal StructureHide

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IDSpeciesReferenceLinkYearLocalityPressure (GPa)Temp (K)
0006128VlasoviteSokolova E, Hawthorne F C, Ball N A, Mitchell R H, Della Ventura G (2006) Vlasovite, Na2Zr(Si4O11), from the Kipawa alkaline complex, Quebec, Canada: Crystal-structure refinement and infrared spectroscopy The Canadian Mineralogist 44 1349-13562006Kipawa alkaline complex, Quebec, Canada0293
0014182VlasoviteVoronkov A A, Zhdanova T A, Pyatenko Y A (1974) Refinement of the structure of vlasovite Na2ZrSi4O11 and some characteristics of the composition and structure of the zirconosilicates Kristallografiya 19 252-25919740293
0014445VlasoviteFleet S G, Cann J R (1967) Vlasovite: a second occurrence and a triclinic to monoclinic inversion Mineralogical Magazine 36 233-24119670293
CIF Raw Data - click here to close

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
5.053 Å(100)
3.669 Å(75)
3.882 Å(45)
3.237 Å(40)
3.363 Å(35)
3.548 Å(25)
1.945 Å(20)

Geological EnvironmentHide

Paragenetic Mode(s):
Paragenetic ModeEarliest Age (Ga)
Stage 4a: Earth’s earliest continental crust>4.4-3.0
19 : Granitic intrusive rocks
Stage 4b: Highly evolved igneous rocks>3.0
35 : Ultra-alkali and agpaitic igneous rocks

Type Occurrence of VlasoviteHide

General Appearance of Type Material:
crystals, to 15 cm
Place of Conservation of Type Material:
Mining Institute, St. Petersburg, 1037/1; A.E. Fersman Mineralogical Museum, Academy of Sciences, Moscow, Russia, 83207, vis5052; National School of Mines, Paris, France.
Reference:
Tikhonenkova, R.P., Kazakova, M.E. (1961) Vlasovite - a new zirconium silicate from the Lovozero Massif. Doklady Akademii Nauk SSSR: 137: 944-946.

Other Language Names for VlasoviteHide

German:Vlasovit
Spanish:Vlasovita

Common AssociatesHide

Associated Minerals Based on Photo Data:
87 photos of Vlasovite associated with EudialyteNa15Ca6Fe3Zr3Si(Si25O73)(O,OH,H2O)3(Cl,OH)2
66 photos of Vlasovite associated with GittinsiteCaZrSi2O7
27 photos of Vlasovite associated with AgrelliteNaCa2Si4O10F
18 photos of Vlasovite associated with AlbiteNa(AlSi3O8)
9 photos of Vlasovite associated with Katophorite{Na}{CaNa}{Mg4Al}[(AlSi7)O22](OH)2
9 photos of Vlasovite associated with NephelineNa3K(Al4Si4O16)
3 photos of Vlasovite associated with Rinkite-(Ce)(Ca3Ce)Na(NaCa)Ti(Si2O7)2(OF)F2
2 photos of Vlasovite associated with AstrophylliteK2NaFe2+7Ti2Si8O26(OH)4F
2 photos of Vlasovite associated with AegirineNaFe3+Si2O6
2 photos of Vlasovite associated with Fluornatropyrochlore(Na,Pb,Ca,REE,U)2Nb2O6F

Related Minerals - Strunz-mindat GroupingHide

9.DM.Kesebolite-(Ce)CeCa2Mn(AsO4)(SiO3)3Mon. 2/m : P21/b
9.DM.PlumbogaidonnayitePbZrSi3O9 · 2H2OOrth. mm2
9.DM.05StokesiteCaSn[Si3O9] · 2H2OOrth. mmm (2/m 2/m 2/m) : Pnna
9.DM.10CalciohilairiteCaZr[SiO3]3 · 3H2OTrig. 3 2 : R3 2
9.DM.10HilairiteNa2Zr[SiO3]3 · 3H2OTrig. 3 2 : R3 2
9.DM.10KomkoviteBaZr[Si3O9] · 3H2OTrig. 3 2 : R3 2
9.DM.10Sazykinaite-(Y)Na5YZr[SiO3]6 · 6H2OTrig. 3 2 : R3 2
9.DM.10Pyatenkoite-(Y)Na5YTi[SiO3]6 · 6H2OTrig. 3 2 : R3 2
9.DM.15GaidonnayiteNa2Zr(Si3O9) · 2H2OOrth. mmm (2/m 2/m 2/m) : Pmna
9.DM.15GeorgechaoiteNaKZr[Si3O9] · 2H2OOrth. mm2
9.DM.20ChkaloviteNa2BeSi2O6Orth. mm2 : Fdd2
9.DM.30RevditeNa16Si16O27(OH)26 · 28H2OMon. 2 : B2
9.DM.35ScheuchzeriteNa(Mn,Mg,Zn)9[VSi9O28(OH)](OH)3Tric. 1 : P1
9.DM.40HydroterskiteNa2ZrSi6O12(OH)6Orth. mmm (2/m 2/m 2/m)
9.DM.40TerskiteNa4ZrSi6O16 · 2H2OOrth. mm2 : Pnc2

Fluorescence of VlasoviteHide

Altered portions fluoresce brownish yellow under SW UV

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 VlasoviteHide

References for VlasoviteHide

Reference List:

Localities for VlasoviteHide

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 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.
Antarctica
 
  • Eastern Antarctica
    • Queen Maud Land
Australia
 
  • New South Wales
    • Gordon Co.
Canada
 
  • Northwest Territories
    • North Slave Region
      • Blachford Lake alkaline complex
        • Thor Lake syenite complex
  • Québec
    • Abitibi-Témiscamingue
      • Témiscamingue RCM
        • Les Lacs-du-Témiscamingue
Czech Republic
 
  • Liberec Region
    • Česká Lípa District
      • Mařenice
India
 
  • Rajasthan
    • Jodhpur Division
      • Barmer District
        • Malani Igneous Province
Portugal
 
  • Azores
    • São Miguel
Russia
 
  • Buryatia
    • Mama River Basin
      • Maigunda River
  • Murmansk Oblast
    • Khibiny Massif
    • Lovozersky District
Saint Helena, Ascension and Tristan da Cunha
 
 
矿物 and/or 产地  
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