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⇱ Chkalovite: Mineral information, data and localities.

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Chkalovite

A valid IMA mineral species - grandfathered
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About ChkaloviteHide

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👁 02941390017271922132586.jpg
Valery Pavlovich Chkalov
Formula:
Na2BeSi2O6
Colour:
White
Lustre:
Vitreous
Hardness:
6
Specific Gravity:
2.662
Crystal System:
Orthorhombic
Name:
Named in 1939 by Vasilii Ivanovich Gerasimovsky in honour of Valery Pavlovich Chkalov (Валерий Павлович Чкалов) (20 January (2 February) 1904, Vasiljevo, Balakhninsky district, Nizhny Novgorod province, Russian Empire - 15 December 1938, Moscow, USSR), Russian aviator and test pilot. He was the first pilot to make a non-stop flight from Moscow to the USA via the North Pole.
This page provides mineralogical data about Chkalovite.


Unique IdentifiersHide

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Mindat ID:
1007
Long-form identifier:
mindat:1:1:1007:4

IMA Classification of ChkaloviteHide

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Approved, 'Grandfathered' (first described prior to 1959)
First published:
1939

Classification of ChkaloviteHide

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9.DM.20

9 : SILICATES (Germanates)
D : Inosilicates
M : Inosilicates with 6-periodic single chains
65.5.2.1

65 : INOSILICATES Single-Width,Unbranched Chains,(W=1)
5 : Single-Width Unbranched Chains, W=1 with chains P=6
14.3.5

14 : Silicates not Containing Aluminum
3 : Silicates of Be

Mineral SymbolsHide

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

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

Physical Properties of ChkaloviteHide

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Vitreous
Transparency:
Transparent, Translucent
Colour:
White
Streak:
White
Hardness:
Tenacity:
Brittle
Cleavage:
Imperfect/Fair
Fair in one direction, indistinct in two other directions
Fracture:
Irregular/Uneven, Conchoidal
Density:
2.662 g/cm3 (Measured)    2.70 g/cm3 (Calculated)

Optical Data of ChkaloviteHide

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Type:
Biaxial (+)
RI values:
nα = 1.544 nβ = 1.546 nγ = 1.549
2V:
Measured: 78° , Calculated: 80°
Max. Birefringence:
δ = 0.005
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.

Surface Relief:
Moderate
Dispersion:
noticable

Chemistry of ChkaloviteHide

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Mindat Formula:
Na2BeSi2O6
Element Weights:
Element% weight
O46.340 %
Si27.115 %
Na22.195 %
Be4.350 %

Calculated from ideal end-member formula.
Common Impurities:
Fe,Ca,K,S

Crystallography of ChkaloviteHide

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Crystal System:
Orthorhombic
Class (H-M):
mm2 - Pyramidal
Space Group:
Fdd2
Cell Parameters:
a = 21.129 Å, b = 6.881 Å, c = 21.185 Å
Ratio:
a:b:c = 3.071 : 1 : 3.079
Unit Cell V:
3,080.06 ų (Calculated from Unit Cell)
Z:
24
Morphology:
Complex equant crystals, massive.

Crystal StructureHide

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Data courtesy of the American Mineralogist Crystal Structure Database. Click on an AMCSD ID to view structure
IDSpeciesReferenceLinkYearLocalityPressure (GPa)Temp (K)
0012452ChkaloviteSimonov M A, Egorov-Tismenko Y K, Belov N V (1975) Utochnennaya kristallicheskaya struktura chkalovita Na2Be[Si2O6] Doklady Akademii Nauk SSSR 225 1319-132219750293
0012436ChkalovitePyatenko Y A, Bokii G B, Belov N V (1956) The X-ray analysis of the crystal structure of chkalovite Doklady Akademii Nauk SSSR 108 1077-108019560293
CIF Raw Data - click here to close

X-Ray Powder DiffractionHide

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Powder Diffraction Data:
d-spacingIntensity
3.97 Å(very strong)
2.46 Å(very strong)
2.41 Å(very strong)
1.79 Å(strong)
1.48 Å(strong)
1.40 Å(strong)
1.11 Å(strong)

Geological EnvironmentHide

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Paragenetic Mode(s):
Paragenetic ModeEarliest Age (Ga)
Stage 4b: Highly evolved igneous rocks>3.0
35 : Ultra-alkali and agpaitic igneous rocks

Type Occurrence of ChkaloviteHide

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General Appearance of Type Material:
Masses, with dimensions 5x4x3 cm and 7x4x3 cm.
Place of Conservation of Type Material:
Vernadsky State Geological Museum, Moscow, Russia, 18767.
A.E. Fersman Mineralogical Museum, Academy of Sciences, Moscow, Russia, 40001.
Geological Setting of Type Material:
In ussingite veinlets in a pegmatite in an alkalic massif.
Associated Minerals at Type Locality:

Other Language Names for ChkaloviteHide

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German:Chkalovit
Simplified Chinese:硅铍钠石
Spanish:Chkalovita
Traditional Chinese:矽鈹鈉石

Common AssociatesHide

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Associated Minerals Based on Photo Data:
115 photos of Chkalovite associated with Tugtupite(BeAlSi)Na4(SiO4)3Cl
47 photos of Chkalovite associated with SodaliteNa4(Si3Al3)O12Cl
43 photos of Chkalovite associated with AnalcimeNa(AlSi2O6) · H2O
38 photos of Chkalovite associated with UssingiteNa2AlSi3O8OH
27 photos of Chkalovite associated with Arfvedsonite[Na][Na2][Fe2+4Fe3+]Si8O22(OH)2
22 photos of Chkalovite associated with PolylithioniteKLi2Al(Si4O10)(F,OH)2
17 photos of Chkalovite associated with SeranditeNaMn2+2Si3O8(OH)
11 photos of Chkalovite associated with VuonnemiteNa11Ti4+Nb2(Si2O7)2(PO4)2O3(F,OH)
11 photos of Chkalovite associated with NatroliteNa2Al2Si3O10 · 2H2O
10 photos of Chkalovite associated with SphaleriteZnS

Related Minerals - Strunz-mindat GroupingHide

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9.DM.Kesebolite-(Ce)CeCa2Mn(AsO4)(SiO3)3Mon. 2/m : P21/b
9.DM.05StokesiteCaSn[Si3O9] · 2H2OOrth. mmm(2/m2/m2/m) : Pnna
9.DM.10CalciohilairiteCaZr[SiO3]3 · 3H2OTrig. 32 : R32
9.DM.10Pyatenkoite-(Y)Na5YTi[SiO3]6 · 6H2OTrig. 32 : R32
9.DM.10HilairiteNa2Zr[SiO3]3 · 3H2OTrig. 32 : R32
9.DM.10KomkoviteBaZr[Si3O9] · 3H2OTrig. 32 : R32
9.DM.10Sazykinaite-(Y)Na5YZr[SiO3]6 · 6H2OTrig. 32 : R32
9.DM.15PlumbogaidonnayitePbZrSi3O9 · 2H2OOrth. mm2
9.DM.15GaidonnayiteNa2Zr(Si3O9) · 2H2OOrth. mmm(2/m2/m2/m) : Pmna
9.DM.15GeorgechaoiteNaKZr[Si3O9] · 2H2OOrth. mm2
9.DM.25VlasoviteNa2ZrSi4O11Mon. 2/m : B2/b
9.DM.30RevditeNa16Si16O27(OH)26 · 28H2OMon. 2 : B2
9.DM.35ScheuchzeriteNa(Mn,Mg,Zn)9[VSi9O28(OH)](OH)3Tric. 1 : P1
9.DM.40TerskiteNa4ZrSi6O16 · 2H2OOrth. mm2 : Pnc2
9.DM.40HydroterskiteNa2ZrSi6O12(OH)6Orth. mmm(2/m2/m2/m)

Other InformationHide

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Notes:
Easily soluble in hydrochloric and nitric acids, soluble with difficulty in sulfuric acid. Before the blowpipe, fuses to a transparent colorless glass.
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 ChkaloviteHide

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mindat.org URL:
https://www.mindat.org/min-1007.html
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References for ChkaloviteHide

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Reference List:

Localities for ChkaloviteHide

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Showing 23 localities.

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

Locality ListHide

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👁 Image
- This locality has map coordinates listed. 👁 Image
- This locality has estimated coordinates. ⓘ - Click for references and further information on this occurrence. ? - Indicates mineral may be doubtful at this locality. 👁 Image
- Good crystals or important locality for species. 👁 Image
- 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.
Canada
  • Québec
    • Montérégie
      • La Vallée-du-Richelieu RCM
        • Mont Saint-Hilaire
Grice (1989) +1 other reference
Greenland
  • Kujalleq
Petersen (2001)
Cran Cowan Specimen
Otter (2023)
Semenov et al. (1965) +2 other references
        • Kvanefjeld deposit
Sørensen et al. (2001)
Metcalf-Johansen (1977)
Petersen et al. (2002)
      • Mount Nakkaalaaq
Semenov et al. (1968)
Cole (2003)
      • Tunulliarfik Fjord
Oen (1964)
Sørensen (1960) +1 other reference
Russia
  • Murmansk Oblast
    • Koashva Mt
Arzamastsev et al. (2008)
[AmMin 87:181] +3 other references
    • Lovozersky District
      • Alluaiv Mountain
        • Umbozero mine
Ju et al. (1997)
Arzamastsev et al. (2008) +1 other reference
        • Karnasurt mine
Pekov et al. (2004)
        • Second Eastern Stream
Pekov (1998)
Pekov (1998)
DAN-SSSR (1939) +2 other references
Ermolaeva et al. (2007) +1 other reference
      • Sengischorr Mountain
        • Motchisuai River Valley
Pekov (1998)
Spain
  • Canary Islands
    • Santa Cruz de Tenerife Province
      • Tenerife
Dill et al. (2023)
Quick NavTopAbout ChkaloviteUnique IdentifiersIMA Classification Classification Mineral SymbolsPhysical Properties Optical Data Chemistry Crystallography Crystal StructureX-Ray Powder DiffractionGeological EnvironmentType Occurrence Other LanguagesCommon AssociatesStrunz-MindatOther InformationInternet Links References Localities Locality List
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