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Moskvinite-(Y)

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About Moskvinite-(Y)Hide

Formula:
Na2KYSi6O15
Y may be replaced by minor REE.
Colour:
Colourless, White
Lustre:
Vitreous
Hardness:
5
Specific Gravity:
2.91
Crystal System:
Orthorhombic
Name:
Named by A.A. Agakhanov, L.A. Pautov, E.V. Sokolova, F.C. Hawthorne, and V.Y. Karpenko in 2003 in honor of Alexander Veniaminovic Moskvin (1897 – 2 March 1974, Leningrad, Russia), Russian geologist and member of the Tajik-Pamirs expedition (1932–1936).
This page provides mineralogical data about Moskvinite-(Y).


Classification of Moskvinite-(Y)Hide

Approved
Approval Year:
2002
First Published:
2003
9.CD.05

9 : SILICATES (Germanates)
C : Cyclosilicates
D : [Si3O9]6- 3-membered double rings

Pronounciation of Moskvinite-(Y)Hide

Pronounciation:
PlayRecorded byCountry
Jolyon & Katya RalphUnited Kingdom

Physical Properties of Moskvinite-(Y)Hide

Vitreous
Transparency:
Transparent
Colour:
Colourless, White
Hardness:
Hardness:
VHN100=523 - Vickers
Hardness Data:
Measured
Tenacity:
Brittle
Cleavage:
None Observed
Fracture:
Irregular/Uneven
Density:
2.91 g/cm3 (Measured)    2.92 g/cm3 (Calculated)

Optical Data of Moskvinite-(Y)Hide

Type:
Biaxial (+)
RI values:
nα = 1.555 nβ = 1.558 nγ = 1.566
2V:
Measured: 64° , Calculated: 63°
Max Birefringence:
δ = 0.011
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
Low

Chemical Properties of Moskvinite-(Y)Hide

Formula:
Na2KYSi6O15

Y may be replaced by minor REE.

Crystallography of Moskvinite-(Y)Hide

Crystal System:
Orthorhombic
Cell Parameters:
a = 10.623 Å, b = 14.97 Å, c = 8.552 Å
Ratio:
a:b:c = 0.71 : 1 : 0.571
Unit Cell V:
1338.3 ų
Z:
4
Morphology:
Isometric grains to 2 mm

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
5.32(35)
4.98(100)
3.45(50)
3.26(85)
3.05(75)
2.753(42)
2.490(45)
Comments:
[d in .ANG.,(I/IO)(hkl)]

Type Occurrence of Moskvinite-(Y)Hide

Synonyms of Moskvinite-(Y)Hide

Other Language Names for Moskvinite-(Y)Hide

Simplified Chinese:莫斯克文石
Traditional Chinese:莫斯克文石

Other InformationHide

IR Spectrum:
Band frequencies of the IR spectrum are: 413, 486, 504, 563, 629, 682, 765, 817, 937, 976, 1015, 1041, 1055, 1070, 1109 cm-1.
Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for Moskvinite-(Y)Hide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Agakhanov, A.A., Pautov, L.A., Sokolova, E.V., Hawthorne, F.C., and Karpenko, V.Y. (2003) Moskvinite-(Y), Na2K(Y,REE)[Si6O15], a new mineral. Zapiski Vserossiyskogo Mineralogicheskogo Obshchestva: 132: 15-21. (in Russian)
Sokolova, E., Hawthorne, F.C., Agakhanov, A.A., Pautov, L.A. (2003) The crystal structure of moskvinite-(Y), Na2K(Y,REE)[Si6O15], a new silicate mineral with [Si6O15] three-membered double rings from the Dara-i-Pioz moraine, Tien-Shan Mountains, Tajikistan. Canadian Mineralogist: 41: 513-520.
Jambor, J.L., Roberts, A.C. (2004) New mineral names. American Mineralogist: 89: 1826-1834.
Mandarino, J.A. (2004) New minerals. The Canadian Mineralogist: 42: 1901-1927.
Pekov, I.V. (2007) New minerals from former Soviet Union countries, 1998-2006: new minerals approved by the IMA commission on new minerals and mineral names. Mineralogical Almanac: 11: 9-51.
Friis, H. (2016) First occurrence of moskvinite-(Y) in the Ilímaussaq alkaline complex, South Greenland – implications for rare-earth element mobility. Mineralogical Magazine: 80: 31-41.

Internet Links for Moskvinite-(Y)Hide

Localities for Moskvinite-(Y)Hide

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 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 (eg from pseudomorphs.)

All localities listed without proper references should be considered as questionable.
Denmark
 
  • Greenland
    • Kujalleq
      • Narsaq
        • Ilímaussaq complex
          • Kuannersuit Plateau (Kvanefjeld)
Friis, H. (2016). First occurrence of moskvinite-(Y) in the Ilímaussaq alkaline complex, South Greenland–implications for rare-earth element mobility. Mineralogical Magazine, 80(1), 31-41.
Tajikistan (TL)
 
  • Region of Republican Subordination
    • Tien Shan Mtn
      • Alai Range (Alayskiy)
Zapiski Vserossiyskogo Mineralogicheskogo Obshchestva: 132(6): 15-21 (in Russian).
Mineral and/or Locality  
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