| Chkalovite Mineral Data |
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- 65.5.2.1 Chkalovite Na2BeSi2O6 F dd2 mm2
- VIII/J.04-10 Chkalovite Na2BeSi2O6 F dd2 mm2
General Chkalovite Information |
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 Chemical Formula: |
Na2BeSi2O6 | ||
| Composition: |
Molecular Weight = 207.16 gm | ||
| Sodium 22.20 % Na 29.92 % Na2O | |||
| Beryllium 4.35 % Be 12.07 % BeO | |||
| Silicon 27.11 % Si 58.01 % SiO2 | |||
| Oxygen 46.34 % O | |||
| ______ ______ | |||
| 100.00 % 100.00 % = TOTAL OXIDE | |||
| Empirical Formula: |
Na2Be(Si2O6) | ||
| Environment: |
In veins in pegmatite in a differentiated alkalic massif. | ||
| IMA Status: |
Valid Species (Pre-IMA) 1939 | ||
| Locality: |
Mt. Punkaruaiv, Lovozero massif, and in the Khibiny massif, Kola Peninsula, Russia. Link to MinDat.org Location Data. | ||
| Name Origin: |
Named for Valerii Pavlovich Chkalov (1904{1938), the first to fly nonstop from Moscow to the USA across the North Pole. | ||
| Synonym: |
ICSD 34075 | ||
| PDF 42-572 | |||
Chkalovite Image | |||
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Images:
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Chkalovite Crystallography |
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| Axial Ratios: |
a:b:c =1:1:0.3255 | ||
| Cell Dimensions: |
a = 21.1, b = 21.1, c = 6.87, Z = 24; V = 3,058.59 Den(Calc)= 2.70 | ||
| Crystal System: |
Orthorhombic - PyramidalH-M Symbol (mm2) Space Group: F dd2 | ||
| X Ray Diffraction: |
By Intensity(I/Io): 2.48(1), 4.02(1), 2.76(0.9), | ||
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Crystal Structure:
Mouse |
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Physical Properties of Chkalovite |
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| Cleavage: |
[100] Fair, [0kl] Indistinct | ||
| Color: |
Colorless, White. | ||
| Density: |
2.662 | ||
| Diaphaniety: |
Transparent to Translucent | ||
| Fracture: |
Brittle - Conchoidal - Very brittle fracture producing small, conchoidal fragments. | ||
| Habit: |
Equant Grains - Granular material with equel dimensions in x, y, and z. | ||
| Hardness: |
6 - Orthoclase | ||
| Luster: |
Vitreous - Greasy | ||
| Streak: |
white | ||
Optical Properties of Chkalovite |
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| Gladstone-Dale: |
CI meas= 0.006 (Superior) - where the CI = (1-KPDmeas/KC) CI calc= 0.02 (Excellent) - where the CI = (1-KPDcalc/KC) KPDcalc= 0.2023,KPDmeas= 0.2052,KC= 0.2065 |
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| Optical Data: |
Biaxial (+), a=1.544, b=1.546, g=1.549, bire=0.0050, 2V(Calc)=80, 2V(Meas)=78. | ||
Calculated Properties of Chkalovite |
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| Electron Density: |
relectron=2.62 gm/cc |
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| Fermion Index |
Fermion Index = 0.05638 Boson Index = 0.94362 |
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| Photoelectric: |
PEChkalovite = 1.43 barns/electron |
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| Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units) Chkalovite is Not Radioactive |
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Chkalovite Classification |
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| Dana Class: |
65.5.2.1 (65)Inosilicate Single-Width Unbranched Chains, W=1 | ||
| (65.5)with chains P=6 | |||
| (65.5.2)Dana Group | |||
| Strunz Class: |
VIII/J.04-10 VIII - Silicates | ||
| VIII/J - Tectosilicates (network) without anions unfamiliar to the tetraheders | |||
| VIII/J.04 - Chkalovite series | |||
Other Chkalovite Information |
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| References: |
NAME( AntBidBlaNic2) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990) | ||
| See Also: |
Links to other databases for Chkalovite : 1 - Alkali-Nuts(English) 2 - Alkali-Nuts(Francais) 3 -Am. Min. Crystal Structure Database 4 - Amethyst Galleries' Mineral Gallery 5 -Athena 6 - EUROmin Project 7 -Google Images 8 -Google Scholar 9 -Handbook of Mineralogy (MinSocAm) 10 -Handbook of Mineralogy (UofA) 11 -MinDAT 12 -MinMax(Deutsch) 13 -MinMax(English) 14 -Mineralienatlas (Deutsch) 15 -QUT Mineral Atlas 16 - Simple Thinking 17 - WWW-MINCRYST 18 -École des Mines de Paris Search for Chkalovite using: Visit our Advertisers for Chkalovite : Translate Chkalovite Mineral Data : Ask about Chkalovite here : Print or Cut-and-Paste your Chkalovite Specimen Label here :
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