Gutkovaite-Mn Mineral Data |
General Gutkovaite-Mn Information |
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Chemical Formula: | CaK2Mn(Ti,Nb)4(Si4O12)2(O,OH)4·5(H2O) | ||
Composition: | Molecular Weight = 1,243.09 gm | ||
Potassium 5.19 % K 6.25 % K2O | |||
Barium 0.88 % Ba 0.99 % BaO | |||
Sodium 0.13 % Na 0.17 % Na2O | |||
Strontium 7.47 % Sr 8.84 % SrO | |||
Calcium 3.22 % Ca 4.51 % CaO | |||
Magnesium 0.10 % Mg 0.16 % MgO | |||
Zirconium 0.07 % Zr 0.10 % ZrO2 | |||
Titanium 13.83 % Ti 23.07 % TiO2 | |||
Manganese 3.62 % Mn 4.68 % MnO | |||
Niobium 3.36 % Nb 4.81 % Nb2O5 | |||
Aluminum 0.09 % Al 0.16 % Al2O3 | |||
Zinc 0.11 % Zn 0.13 % ZnO | |||
Iron 0.45 % Fe 0.58 % FeO | |||
Silicon 18.07 % Si 38.67 % SiO2 | |||
Hydrogen 0.91 % H 8.17 % H2O | |||
Oxygen 42.49 % O | |||
______ ______ | |||
100.00 % 101.29 % = TOTAL OXIDE | |||
Empirical Formula: | CaNa0.07K1.65Ba0.08Sr1.06Mn2+0.82Fe2+0.1Mg0.05Zn0.02Ti3.59Nb0.45Zr0.01Si8Al0.04O24.14 O2.47(OH)1.53·4.87(H2O) | ||
Environment: | Pegmitite within nepheline syenite. (labuntosovite group; structure) | ||
IMA Status: | Approved IMA 2002 (Dana # Added) | ||
Locality: | Mooount Maly Mannepakhk, Khibiny alkaline massif, Kola Peninsula, Russia. Link to MinDat.org Location Data. | ||
Name Origin: | Named for N. N. Gukova (1896-1960?), Russian mineralogist.. | ||
Synonym: | IMA2001-038 | ||
Search for Gutkovaite-Mn Images | |||
Images: |
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Gutkovaite-Mn Crystallography |
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Axial Ratios: | a:b:c =1.0295:1:0.5587 | ||
Cell Dimensions: | a = 14.3, b = 13.889, c = 7.76, Z = 2; beta = 117.51° V = 1,366.97 Den(Calc)= 3.02 | ||
Crystal System: | Monoclinic - DomaticH-M Symbol (m) Space Group: Cm | ||
X Ray Diffraction: | By Intensity(I/Io): 3.05(1)(241,240), 3.22(0.9)(421,402,400), 7(0.7)(020,001), 2.48(0.6)(441,403,401), 2.57(0.5)(242,241), 6.33(0.5)(201,200), 1.428(0.3), 1 | ||
Physical Properties of Gutkovaite-Mn |
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Cleavage: | None | ||
Color: | Pale yellowish pink. | ||
Density: | 2.83 | ||
Diaphaniety: | Transparent to Translucent | ||
Fracture: | Brittle - Uneven - Very brittle fracture producing uneven fragments. | ||
Habit: | Prismatic - Crystals Shaped like Slender Prisms (e.g. tourmaline). | ||
Hardness: | 5 - Apatite | ||
Luster: | Vitreous (Glassy) | ||
Streak: | white | ||
Optical Properties of Gutkovaite-Mn |
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Gladstone-Dale: | CI meas= 0.004 (Superior) - where the CI = (1-KPDmeas/KC) CI calc= 0.066 (Fair) - where the CI = (1-KPDcalc/KC) KPDcalc= 0.2421,KPDmeas= 0.2583,KC= 0.2593 |
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Optical Data: | Biaxial (+), a=1.688, b=1.7, g=1.805, bire=0.1170, 2V(Calc)=40, 2V(Meas)=35. Dispersion dispersion not observed. | ||
Calculated Properties of Gutkovaite-Mn |
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Electron Density: | relectron=2.76 gm/cc |
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Fermion Index | Fermion Index = 0.03369 Boson Index = 0.96631 |
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Photoelectric: | PEGutkovaite-Mn = 21.70 barns/electron |
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Radioactivity: | GRapi = 73.09 (Gamma Ray American Petroleum Institute Units) Estimated Radioactivity from Gutkovaite-Mn - barely detectable |
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Gutkovaite-Mn Classification |
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Dana Class: | 60.1.3f.1 (60)Cyclosilicate Four-Membered Rings | ||
(60.1)as Titanosilicates | |||
(60.1.3f)Labuntsovite Group (Gutkovaite subgroup Monoclinic [Cm]) | |||
Strunz Class: | VIII/E.07-200 VIII - Silicates | ||
VIII/E - Cyklosilicates, quadruplet rings [Si4O11]8- | |||
VIII/E.07 - Labuntsovite Group | |||
Other Gutkovaite-Mn Information |
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References: | NAME( AmMin, v 88, p 931) PHYS. PROP.(AmMin, v 88, p 931) OPTIC PROP.(AmMin, v 88, p 931) | ||
See Also: | Links to other databases for Gutkovaite-Mn : 1 -Am. Min. Crystal Structure Database 2 -Athena 3 -Google Images 4 -Google Scholar 5 -MinDAT 6 -MinMax(Deutsch) 7 -MinMax(English) 8 -Mineralienatlas (Deutsch) 9 -QUT Mineral Atlas Search for Gutkovaite-Mn using: Visit our Advertisers for Gutkovaite-Mn : Translate Gutkovaite-Mn Mineral Data : Ask about Gutkovaite-Mn here : Print or Cut-and-Paste your Gutkovaite-Mn Specimen Label here :
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