Chkalovite
A valid IMA mineral species - grandfathered
This page is currently not sponsored. Click here to sponsor this page.
About Chkalovite
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 Identifiers
Mindat ID:
1007
Long-form identifier:
mindat:1:1:1007:4
IMA Classification of Chkalovite
Approved, 'Grandfathered' (first described prior to 1959)
First published:
1939
Classification of Chkalovite
9.DM.20
9 : SILICATES (Germanates)
D : Inosilicates
M : Inosilicates with 6-periodic single chains
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
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
14 : Silicates not Containing Aluminum
3 : Silicates of Be
Mineral Symbols
As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.
| Symbol | Source | Reference for Standard |
|---|---|---|
| Ckl | IMA–CNMNC | Warr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43 |
Physical Properties of Chkalovite
Vitreous
Transparency:
Transparent, Translucent
Colour:
White
Streak:
White
Hardness:
6 on Mohs scale
Tenacity:
Brittle
Cleavage:
Imperfect/Fair
Fair in one direction, indistinct in two other directions
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 Chkalovite
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.
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.
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 Chkalovite
Mindat Formula:
Na2BeSi2O6
Element Weights:
Elements listed:
Common Impurities:
Fe,Ca,K,S
Crystallography of Chkalovite
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 Structure
Load
Unit Cell | Unit Cell Packed
2x2x2 | 3x3x3 | 4x4x4
Unit Cell | Unit Cell Packed
2x2x2 | 3x3x3 | 4x4x4
Show
Big Balls | Small Balls | Just Balls | Spacefill
Polyhedra Off | Si Polyhedra | All Polyhedra
Remove metal-metal sticks
Big Balls | Small Balls | Just Balls | Spacefill
Polyhedra Off | Si Polyhedra | All Polyhedra
Remove metal-metal sticks
Display Options
Black Background | White Background
Perspective On | Perspective Off
2D | Stereo | Red-Blue | Red-Cyan
Black Background | White Background
Perspective On | Perspective Off
2D | Stereo | Red-Blue | Red-Cyan
View
CIF File Best | x | y | z | a | b | c
CIF File Best | x | y | z | a | b | c
Rotation
Stop | Start
Stop | Start
Labels
Console Off | On | Grey | Yellow
Console Off | On | Grey | Yellow
Data courtesy of the American Mineralogist Crystal Structure Database. Click on an AMCSD ID to view structure
| ID | Species | Reference | Link | Year | Locality | Pressure (GPa) | Temp (K) |
|---|---|---|---|---|---|---|---|
| 0012452 | Chkalovite | Simonov M A, Egorov-Tismenko Y K, Belov N V (1975) Utochnennaya kristallicheskaya struktura chkalovita Na2Be[Si2O6] Doklady Akademii Nauk SSSR 225 1319-1322 | 1975 | 0 | 293 | ||
| 0012436 | Chkalovite | Pyatenko Y A, Bokii G B, Belov N V (1956) The X-ray analysis of the crystal structure of chkalovite Doklady Akademii Nauk SSSR 108 1077-1080 | 1956 | 0 | 293 |
CIF Raw Data - click here to close
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 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 Environment
Paragenetic Mode(s):
| Paragenetic Mode | Earliest Age (Ga) |
|---|---|
| Stage 4b: Highly evolved igneous rocks | >3.0 |
| 35 : Ultra-alkali and agpaitic igneous rocks |
Type Occurrence of Chkalovite
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.
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 Chkalovite
Dutch:Chkaloviet
German:Chkalovit
Russian:Чкаловит
Simplified Chinese:硅铍钠石
Spanish:Chkalovita
Traditional Chinese:矽鈹鈉石
Common Associates
Associations Based on Photo Data:
| 115 photos of Chkalovite associated with Tugtupite | (BeAlSi)Na4(SiO4)3Cl |
| 47 photos of Chkalovite associated with Sodalite | Na4(Si3Al3)O12Cl |
| 43 photos of Chkalovite associated with Analcime | Na(AlSi2O6) · H2O |
| 38 photos of Chkalovite associated with Ussingite | Na2AlSi3O8OH |
| 27 photos of Chkalovite associated with Arfvedsonite | [Na][Na2][Fe2+4Fe3+]Si8O22(OH)2 |
| 22 photos of Chkalovite associated with Polylithionite | KLi2Al(Si4O10)(F,OH)2 |
| 17 photos of Chkalovite associated with Serandite | NaMn2+2Si3O8(OH) |
| 11 photos of Chkalovite associated with Natrolite | Na2Al2Si3O10 · 2H2O |
| 11 photos of Chkalovite associated with Vuonnemite | Na11Ti4+Nb2(Si2O7)2(PO4)2O3(F,OH) |
| 10 photos of Chkalovite associated with Sphalerite | ZnS |
Related Minerals - Strunz-mindat Grouping
| 9.DM. | Kesebolite-(Ce) | CeCa2Mn(AsO4)(SiO3)3 |
| 9.DM.05 | Stokesite | CaSn[Si3O9] · 2H2O |
| 9.DM.10 | Calciohilairite | CaZr[SiO3]3 · 3H2O |
| 9.DM.10 | Pyatenkoite-(Y) | Na5YTi[SiO3]6 · 6H2O |
| 9.DM.10 | Hilairite | Na2Zr[SiO3]3 · 3H2O |
| 9.DM.10 | Komkovite | BaZr[Si3O9] · 3H2O |
| 9.DM.10 | Sazykinaite-(Y) | Na5YZr[SiO3]6 · 6H2O |
| 9.DM.15 | Plumbogaidonnayite | PbZrSi3O9 · 2H2O |
| 9.DM.15 | Gaidonnayite | Na2Zr(Si3O9) · 2H2O |
| 9.DM.15 | Georgechaoite | NaKZr[Si3O9] · 2H2O |
| 9.DM.25 | Vlasovite | Na2ZrSi4O11 |
| 9.DM.30 | Revdite | Na16Si16O27(OH)26 · 28H2O |
| 9.DM.35 | Scheuchzerite | Na(Mn,Mg,Zn)9[VSi9O28(OH)](OH)3 |
| 9.DM.40 | Terskite | Na4ZrSi6O16 · 2H2O |
| 9.DM.40 | Hydroterskite | Na2ZrSi6O12(OH)6 |
Other Information
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 Chkalovite
mindat.org URL:
https://www.mindat.org/min-1007.html
Please feel free to link to this page.
Please feel free to link to this page.
Search Engines:
External Links:
Mineral Dealers:
References for Chkalovite
Localities for Chkalovite
Showing 23 localities.
symbol to view information about a locality.
The Locality List
- 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).
All localities listed without proper references should be considered as questionable.
Canada | |
| Grice (1989) +1 other reference |
Greenland | |
| Petersen (2001) |
| Cran Cowan Specimen | |
| Otter (2023) | |
| Semenov et al. (1965) +2 other references | |
| Sørensen et al. (2001) |
| Metcalf-Johansen (1977) | |
| Petersen et al. (2002) | |
| Semenov et al. (1968) |
| Cole (2003) | |
| Oen (1964) |
| Sørensen (1960) +1 other reference | |
Russia | |
| Arzamastsev et al. (2008) |
| [AmMin 87:181] +3 other references | |
| Ju et al. (1997) |
| Arzamastsev et al. (2008) +1 other reference | |
| Pekov et al. (2004) |
| Pekov (1998) |
| Pekov (1998) | |
| DAN-SSSR (1939) +2 other references | |
| Ermolaeva et al. (2007) +1 other reference | |
| Pekov (1998) |
Spain | |
| 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
Pegmatite No. 60, Second Eastern Stream, Karnasurt Mountain, Lovozersky District, Murmansk Oblast, Russia