General Shibkovite Information![]() K(Ca,Mn,Na)2(K2-x,[ ]x)2ZnSi12O30 (x~0.8) |
![]() Molecular Weight = 1,180.17 gm |
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Potassium 7.29 % K 8.78 % K2O |
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Sodium 0.58 % Na 0.79 % Na2O |
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Calcium 4.41 % Ca 6.18 % CaO |
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Manganese 1.86 % Mn 2.40 % MnO |
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Zinc 16.62 % Zn 20.69 % ZnO |
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Silicon 28.56 % Si 61.09 % SiO2 |
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Oxygen 40.67 % O |
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100.00 % 99.93 % = TOTAL OXIDE |
![]() K2.2Ca1.3Mn2+0.4Na0.3Zn3Si12O30 |
![]() Found in a boulder of perialkaline granitic pegmatite in moraine. A member of the Osumilite-Milarite group. |
![]() Approved IMA 1998 (Dana # Added) |
![]() Dara-i-Pioz glacier, Garmsky District, northern Tajikistan. Link to MinDat.org Location Data. |
![]() Named after two prominent Russian geologists, Viktor Sergeevitch Shibkov (1926-1992) and Nikolai Viktorovitch Shibkov (1951-1991), who both spent their professional lives working on the geology of Soviet Asia. |
![]() ICSD 87953 |
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IMA1997-018 |
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PDF 51-1432 |
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Shibkovite Crystallography![]() a:c = 1:1.3503 |
![]() a = 10.505, c = 14.185, Z = 2; V = 1,355.66 Den(Calc)= 2.89 |
![]() Hexagonal - Dihexagonal DipyramidalH-M Symbol (6/m 2/m 2/m) Space Group: P 6/mcc |
![]() By Intensity(I/Io): 3.83(1), 2.795(0.85), 3.345(0.6), |
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| Physical Properties of Shibkovite![]() None |
![]() Colorless, White. |
![]() Transparent to Translucent |
![]() Brittle - Generally displayed by glasses and most non-metallic minerals. |
![]() Microscopic Crystals - Crystals visible only with microscopes. |
![]() 5.5-6 - Knife Blade-Orthoclase |
![]() Vitreous (Glassy) |
![]() white |
| Optical Properties of Shibkovite![]() CI calc= 0.009 (Superior) - where the CI = (1-KPDcalc/KC) |
KPDcalc= 0.1945,KC= 0.1962 Ncalc = 1.57 ![]() Uniaxial (+), w=1.561, e=1.563, bire=0.0020. |
| Calculated Properties of Shibkovite![]() Bulk Density (Electron Density)=2.84 gm/cc |
note: Specific Gravity of Shibkovite =2.89 gm/cc. ![]() Fermion Index = 0.02 |
Boson Index = 0.98 ![]() PEShibkovite = 10.97 barns/electron |
U=PEShibkovite x relectron= 31.11 barns/cc. ![]() |
GRapi = 103.19 (Gamma Ray American Petroleum Institute Units)
Estimated Radioactivity from Shibkovite | Shibkovite Classification![]() 63.02.01a.16 (63)Cyclosilicate Condensed Rings |
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(63.02)6-membered rings |
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(63.02.01a)Milarite - Osumilite group (Milarite - Osumilite subgroup) |
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![]() 09.CM.05 09 - SILICATES (Germanates) |
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09.C - Cyclosilicates |
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09.CM -[Si6O18]12- 6-membered double rings (sechser-Doppelringe) |
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| Other Shibkovite Information![]() NAME( CanMin, 8/99) PHYS. PROP.(MinRec, V 31, No. 2) OPTIC PROP.(MinRec, V 31, No. 2) |
![]() Links to other databases for Shibkovite : |
1 - Am. Min. Crystal Structure Database 2 - Athena 3 - GeoScienceWorld 4 - Google Images 5 - Google Scholar 6 - MinDAT 7 - Mineralienatlas (Deutsch) 8 - Online Mineral Museum 9 - QUT Mineral Atlas 10 - Ruff.Info Search for Shibkovite using: Visit our Advertisers for Shibkovite : A Bijoux Google Search for ShibkoviteAdam's Minerals Google Search for Shibkovite Cape Minerals Google Search for Shibkovite Dakota Matrix Minerals Google Search for Shibkovite Excalibur Mineral Corp. Google Search for Shibkovite Exceptional Minerals Google Search for Shibkovite John Betts Fine Minerals Search for Shibkovite McDougall Minerals Google Search for Shibkovite Mineral News Website Link Rock and Mineral Shows Google Search for Shibkovite Weinrich Minerals, Inc. Google Search for Shibkovite Ask about Shibkovite here : Print or Cut-and-Paste your Shibkovite Specimen Label here :
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