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Chkalovite

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Formula:
Na
 
2
BeSi
 
2
O
 
6
System:OrthorhombicColour:White
Hardness:6
Name:
Named in 1939 by Vasilii Ivanovich Gerasimovsky in honor of Valery Pavlovich Chkalov (1904-1938), Russian aviator.
This page provides mineralogical data about Chkalovite.

Classification of Chkalovite

IMA status:Valid - first described prior to 1959 (pre-IMA) - "Grandfathered"
Strunz 8th edition ID:8/J.04-10
Nickel-Strunz 10th (pending) edition ID:9.DM.20

9 : SILICATES (Germanates)
D : Inosilicates
M : Inosilicates with 6-periodic single chains
Dana 8th edition ID:65.5.2.1

65 : INOSILICATES Single-Width,Unbranched Chains,(W=1)
5 : Single-Width Unbranched Chains, W=1 with chains P=6
Hey's CIM Ref.:14.3.5

14 : Silicates not Containing Aluminum
3 : Silicates of Be
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Type Occurrence of Chkalovite

Type Locality:Malyi Punkaruaiv Mt, Lovozero Massif, Kola Peninsula, Murmanskaja Oblast', Northern Region, Russia
Year of Discovery:1938
Geological Setting of type material:Pegmatite in alkalic massif

Physical Properties of Chkalovite

Lustre:Vitreous
Diaphaneity (Transparency):Transparent, Translucent
Colour:White
Hardness (Mohs):6
Tenacity:Brittle
Cleavage:Imperfect/Fair
Fair in one direction, indistinct in two other directions
Fracture:Irregular/Uneven, Conchoidal
Density (measured):2.662 g/cm3
Density (calculated):2.70 g/cm3

Crystallography of Chkalovite

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

Optical Data of Chkalovite

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

Chart shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:Low
Dispersion:noticable

Chemical Properties of Chkalovite

Formula:
Na
 
2
BeSi
 
2
O
 
6
Simplified for copy/paste:Na2BeSi2O6
Essential elements:Be, Na, O, Si
All elements listed in formula:Be, Na, O, Si
Common Impurities:Fe,Ca,K,S

Relationship of Chkalovite to other Species

Related Minerals - Nickel-Strunz Grouping):

- +
9.DM.05Stokesite
CaSn[Si
 
3
O
 
9
] · 2H
 
2
O
9.DM.10Calciohilairite
CaZr[SiO
 
3
]
 
3
· 3H
 
2
O
9.DM.10Hilairite
Na
 
2
Zr[SiO
 
3
]
 
3
· 3H
 
2
O
9.DM.10Komkovite
BaZr[Si
 
3
O
 
9
] · 3H
 
2
O
9.DM.10Sazykinaite-(Y)
Na
 
5
YZr[SiO
 
3
]
 
6
· 6H
 
2
O
9.DM.10Pyatenkoite-(Y)
Na
 
5
YTi[SiO
 
3
]
 
6
· 6H
 
2
O
9.DM.15Gaidonnayite
Na
 
2
Zr(Si
 
3
O
 
9
) · 2H
 
2
O
9.DM.15Georgechaoite
NaKZr[Si
 
3
O
 
9
] · 2H
 
2
O
9.DM.25Vlasovite
Na
 
2
ZrSi
 
4
O
 
11
9.DM.30Revdite
Na
 
16
Si
 
16
O
 
27
(OH)
 
26
· 28H
 
2
O
9.DM.35Scheuchzerite
Na(Mn,Mg,Zn)
 
9
[VSi
 
9
O
 
28
(OH)](OH)
 
3
9.DM.40Terskite
Na
 
4
ZrSi
 
6
O
 
16
· 2H
 
2
O
Related Minerals - Hey's Index Grouping:

- +
14.3.1Phenakite
Be
 
2
SiO
 
4
14.3.2Bertrandite
Be
 
4
(Si
 
2
O
 
7
)(OH)
 
2
14.3.3Beryllite
Be
 
3
(SiO
 
4
)(OH)
 
2
· H
 
2
O
14.3.4Liberite
Li
 
2
BeSiO
 
4
14.3.6Eudidymite
Na
 
2
Be
 
2
Si
 
6
O
 
15
· H
 
2
O
14.3.7Epididymite
Na
 
2
Be
 
2
Si
 
6
O
 
15
· H
 
2
O
14.3.8Gugiaite
Ca
 
2
Be(Si
 
2
O
 
7
)
14.3.9Jeffreyite
(Ca,Na)
 
2
(Be,Al)(Si
 
2
O
 
7
,HSi
 
2
O
 
7
)
14.3.10Semenovite-(Ce)
Na
 
8
Ca
 
2
FeBe
 
6
Ce
 
2
Si
 
14
O
 
40
(OH)
 
4
F
 
4
14.3.11Barylite
Be
 
2
Ba(Si
 
2
O
 
7
)
14.3.12Hingganite-(Ce)
(Ce,REE)
 
2
(□,Fe
2+
 
)Be
 
2
[SiO
 
4
]
 
2
(OH)
 
2
14.3.13Hingganite-(Yb)
(Yb,Y,REE)
 
2
□Be
 
2
[SiO
 
4
]
 
2
(OH)
 
2
14.3.14Hingganite-(Y)
(Y,REE,Ca)
 
2
(□,Fe
2+
 
)Be
 
2
[SiO
 
4
]
 
2
(OH)
 
2
14.3.15Minasgeraisite-(Y)
CaBe
 
2
Y
 
2
Si
 
2
O
 
10
14.3.16Sørensenite
Na
 
4
SnBe
 
2
Si
 
6
O
 
16
(OH)
 
4
14.3.17Trimerite
CaMn
2+
2
Be
 
3
(SiO
 
4
)
 
3
14.3.18Chiavennite
CaMnBe
 
2
Si
 
5
O
 
13
(OH)
 
2
· 2H
 
2
O
14.3.19Tvedalite
(Ca,Mn)
 
4
Be
 
3
Si
 
6
O
 
17
(OH)
 
4
· 3H
 
2
O
14.3.20Harstigite
Ca
 
6
(Mn,Mg)Be
 
4
Si
 
6
(O,OH)
 
24
14.3.21Sverigeite
NaMnMgSnBe
 
2
(SiO
 
4
)
 
3
(OH)
14.3.22Joesmithite
{Pb}{Ca
 
2
}{Mg
 
3
Fe
3+
2
}(Be
 
2
Si
 
6
O
 
22
)(OH)
 
2
14.3.23Gadolinite-(Y)
Y
 
2
Fe
2+
 
Be
 
2
Si
 
2
O
 
10
14.3.24Gadolinite-(Ce)
(Ce,La,Nd,Y)
 
2
Fe
2+
 
Be
 
2
Si
 
2
O
 
10
14.3.25Calciogadolinite-(Y)
(YCa)
 
2
Fe
3+
 
Be
 
2
[SiO
 
4
]
 
2
O
 
2

Other Names for Chkalovite

Other Languages:
German:Chkalovit
Russian:Чкаловит
Simplified Chinese:硅铍钠石
Spanish:Chkalovita
Traditional Chinese:矽鈹鈉石

Other Information

Health Warning:No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for Chkalovite

Reference List:

- +
American Mineralogist: 25: 380.

Soviet Physics – Doklady: 20: 805-807.

Internet Links for Chkalovite

Search Engines:
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  • External Links:
  • Look for Chkalovite on Webmineral
  • Look for Chkalovite on Athena Mineralogy
  • Look for Chkalovite on Mineralien Atlas
  • Raman and XRD data at RRUFF project
  • American Mineralogist Crystal Structure Database
  • Chkalovite details from Handbook of Mineralogy (PDF)
  • Mineral Dealers:
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  • Localities for Chkalovite

    The 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.
    (TL) indicates type locality. ? indicates mineral may be doubtful at this locality. All other localities listed without reference should be considered as uncertain and unproven until references can be found.
    Canada
     
    • Québec
      • Montérégie
        • La Vallée-du-Richelieu RCM
          • Mont Saint-Hilaire
    Horváth, L and Gault, R.A. (1990), The mineralogy of Mont Saint-Hilaire Quebec. Mineralogical Record: 21: 284-359.
    Greenland
     
    • Kujalleq
      • Narsaq
    Petersen, O.V. (2001): List of all minerals identified in the Ilímaussaq alkaline complex, South Greenland. Geology of Greenland Survey Bulletin. 190, 25-33
    Neues Jahrbuch Min. Monatsh. 1 (2002), 23-30; Friis, H., Balic-Zunic, T, Pekov, I., Peterson, O. (2004): Kuannersuite-(Ce), a new member of the Apatite-group, from the Ilimaussaq alkaline complex, South Greenland, Canadian Mineralogist, Vol. 42, 95-106
    Cole, M. (2003): Fluorescent Minerals of the Ilimaussaq Complex, Greenland, MinerShop 2003
    Metcalf-Johansen, J. (1977): Willemite from the Ilimaussaq alkaline Intrusion. Mineralogical Magazine. 41, 71-75
    Petersen, O.V., Giester, G., Brandstätter, F., Niedermayr, G. (2002): Nabesite, a new mineral species from the Ilimaussaq alkaline complex. Canadian Mineralogist. 40, 173-181
          • Taseq area
            • Nakalak Mt (Nakalaq; Nakkaalaaq)
    Semenov, E.I., Kazakova, M.E., Bukin, V.J. (1968): Ilimaussite, a new rare earth – niobium – barium silicate, from Ilimaussaq, South Greenland, Medd. Groenland, Vol. 181 (7), 3-7
    Cole, M. (2003): Fluorescent Minerals of the Ilimaussaq Complex, Greenland, MinerShop 2003
          • Tunulliarfik Fjord (Tunugdliarfik)
    Sørensen, H. (1962): On the occurrence of Steenstrupine in the Ilimaussaq massif, Southwest Greenland. Meddelelser om Grønland. 167 (1), 1-251
    Andersen, E.K., Danø, M., and Peteresen, O.V. (1969): A tetragonal natrolite. Contribution to the mineralogy of Ilímaussaq, No 13. Meddelelser om Grønland, 181, (10), 1-19.; Sørensen, H. (1960) Beryllium minerals in a pegmatite in the nepheline syenites of Ilímaussaq, South West Greenland. International Geological Congress, Report, 21st Session, Norden. Part 17, 31 35. Abstract: American Mineralogist, 46, 241.
    Russia
     
    • Northern Region
      • Murmanskaja Oblast'
        • Kola Peninsula
          • Khibiny Massif
            • Koashva Mt
    Arzamastsev, A., Yakovenchuk, V., Pakhomovsky, Y., & Ivanyuk, G. (2008). The Khibina and Lovozero alkaline massifs: Geology and unique mineralization. In Guidbook for 33rd International Geological Congress Excursion (No. 47, p. 58).
    [AmMin 87:181]; American Mineralogist, Volume 94, pages 1450–1458, 2009
          • Lovozero Massif
            • Alluaiv Mt
              • Umbozero mine (Umbozerskii mine)
    Lapis, 4/97, Ivanjuk et al.
    Arzamastsev, A., Yakovenchuk, V., Pakhomovsky, Y., & Ivanyuk, G. (2008). The Khibina and Lovozero alkaline massifs: Geology and unique mineralization. In Guidbook for 33rd International Geological Congress Excursion (No. 47, p. 58).
              • Second Eastern Stream
    Pekov, I. (1998) Minerals First discovered on the territory of the former Soviet Union 369p. Ocean Pictures, Moscow
    Pekov, I. (1998) Minerals First discovered on the territory of the former Soviet Union 369p. Ocean Pictures, Moscow
            • Kedykverpakhk Mt
    I. V. Pekov, N. V. Chukanov, I. M. Kulikova, N. V. Zubkova, O. D. Krotova, N. I. Sorokina, D. Yu. Pushcharovsky: Proc. Russ. Min. Soc. 133(1):41-49 (2004)
    DAN-SSSR,(1939) 22, 259-263; Pekov, I. (1998) Minerals First discovered on the territory of the former Soviet Union 369p. Ocean Pictures, Moscow
    Ermolaeva, V.N., Pekov, I.V., Chukanov, N.V., Zadov, A.E. (2007): Geology of Ore Deposits 49(8), 758-775.
            • Sengischorr Mt
              • Motchisuai River Valley
    Pekov, I. (1998) Minerals First discovered on the territory of the former Soviet Union 369p. Ocean Pictures, Moscow
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