Classification of Moskvinite-(Y) |
| IMA status: | Approved 2002 |
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| Nickel-Strunz 10th (pending) edition ID: | 9.CD.05
9 : SILICATES (Germanates)
C : Cyclosilicates
D : [Si3O9]6- 3-membered double rings |
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| mindat.org URL: | http://www.mindat.org/min-27552.html
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Type Occurrence of Moskvinite-(Y) |
| Type Locality: | Darai-Pioz (Dara-i-Pioz; Dara-Pioz) Glacier, Alai (Alayskiy) Range, Tien Shan Mts, Region of Republican Subordination, Tajikistan |
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| Geological Setting of type material: | Occurs in a coarse-grained reedmergnerite pegmatite |
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| Associated Minerals at type locality: | |
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Physical Properties of Moskvinite-(Y) |
| Lustre: | Vitreous |
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| Diaphaneity (Transparency): | Transparent |
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| Colour: | Colourless, White |
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| Hardness (Mohs): | 5 |
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| Hardness (Vickers): | VHN100=523 |
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| Hardness Data: | Measured |
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| Tenacity: | Brittle |
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| Cleavage: | None Observed |
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| Fracture: | Irregular/Uneven |
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| Density (measured): | 2.91 g/cm3 |
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| Density (calculated): | 2.92 g/cm3 |
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Crystallography of Moskvinite-(Y) |
| Crystal System: | Orthorhombic |
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| Cell Parameters: | a = 10.623Å, b = 14.97Å, c = 8.552Å
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| Ratio: | a:b:c = 0.71 : 1 : 0.571 |
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| Unit Cell Volume: | V 1338.3 ų |
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| Z: | 4 |
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| Morphology: | Isometric grains to 2 mm |
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| X-Ray Powder Diffraction: | | d-spacing | | Intensity | | 5.32 | | (35) | | 4.98 | | (100) | | 3.45 | | (50) | | 3.26 | | (85) | | 3.05 | | (75) | | 2.753 | | (42) | | 2.490 | | (45) |
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| Comments: | [d in .ANG.,(I/IO)(hkl)] |
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Optical Data of Moskvinite-(Y) |
| Type: | Biaxial (+) |
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| RI values: | nα = 1.555 nβ = 1.558 nγ = 1.566 |
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| 2V: | Measured: 64° , Calculated: 63° |
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| Maximum Birefringence: | δ = 0.011
Chart shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration. |
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| Surface Relief: | Low |
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Chemical Properties of Moskvinite-(Y) |
| Formula: | |
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| All elements listed in formula: | K, Na, O, Si, Y |
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Other Names for Moskvinite-(Y) |
| Synonyms: | |
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| Other Languages: | |
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Other Information |
| 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. |
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| Health Warning: | No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care. |
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References for Moskvinite-(Y) |
Reference List:
- + | Agakhanov, A.., Pautov, L.A., Sokolova, E.V., Hawthorne, F.S., ad Karpenko, V. Yu. (2003) Moskvinite-(Y), Na2K(Y,REE)[Si6O15], a new mineral. Zapiski Vserossiyskogo Mineralogicheskogo Obshchestva: 132(6): 15-21 (in Russian). |
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Internet Links for Moskvinite-(Y) |
| Search Engines: |
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| External Links: | Look for Moskvinite-(Y) on WebmineralLook for Moskvinite-(Y) on Athena MineralogyLook for Moskvinite-(Y) on Mineralien AtlasRaman and XRD data at RRUFF projectAmerican Mineralogist Crystal Structure Database |
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| Jobs: | Mining & Geology Jobs |
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Localities for Moskvinite-(Y) |
The map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the  symbol to view information about a locality.
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