General Organovaite-Mn Information
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Chemical Formula: |
K2Mn(Nb,Ti)4(Si4O12)2(O,OH)4·6(H2O) |
Composition: |
Molecular Weight = 2,372.13 gm |
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Potassium 3.79 % K 4.57 % K2O |
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Barium 1.16 % Ba 1.29 % BaO |
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Sodium 0.39 % Na 0.52 % Na2O |
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Calcium 0.84 % Ca 1.18 % CaO |
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Titanium 5.65 % Ti 9.43 % TiO2 |
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Manganese 4.17 % Mn 5.38 % MnO |
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Niobium 20.76 % Nb 29.69 % Nb2O5 |
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Aluminum 0.11 % Al 0.21 % Al2O3 |
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Zinc 1.65 % Zn 2.06 % ZnO |
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Iron 0.24 % Fe 0.30 % FeO |
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Silicon 18.83 % Si 40.27 % SiO2 |
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Hydrogen 0.59 % H 5.32 % H2O |
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Oxygen 41.82 % O |
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______ ______ |
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100.00 % 100.24 % = TOTAL OXIDE |
Empirical Formula: |
K2.3Zn0.6Ca0.5Na0.4Ba0.2Mn2+1.8Fe2+0.1Nb5.3Ti2.8Si15.9Al0.1O54(OH)2·6(H2O) |
Environment: |
Alkaline pegmatites. Sometimes forms pseudomorphs after vuonnemite. |
IMA Status: |
Approved IMA 2002 (Dana # Added) |
Locality: |
Mount Karnasurt, Lovozero massif, Kola Peninsula, Russia. Link to MinDat.org Location Data. |
Name Origin: |
Named for Natalia Ivanovna Organova (1929-), Russian crystallographer and the Mn end-member. |
Synonym: |
IMA2000-031 |
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Images:
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Organovaite-Mn Crystallography
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Axial Ratios: |
a:b:c =1.0392:1:1.1214 |
Cell Dimensions: |
a = 14.551, b = 14.001, c = 15.702, Z = 2; beta = 117.584° V = 2,835.33 Den(Calc)= 2.78 |
Crystal System: |
Monoclinic - DomaticH-M Symbol (m) Space Group: Cm |
X Ray Diffraction: |
By Intensity(I/Io): 6.99(1)(020), 3.227(0.89)(422,400,4043.123(0.68)(042,024),
2.52(0.29)(442,402,406)4.936(0.28)(022), 2.607(0.25)(244,204,20 |
Physical Properties of Organovaite-Mn
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Cleavage: |
None |
Color: |
Rose brown, Pink, Yellow brown. |
Density: |
2.88 |
Diaphaniety: |
Transparent to Translucent |
Fracture: |
Brittle - Uneven - Very brittle fracture producing uneven fragments. |
Habit: |
Prismatic - Crystals Shaped like Slender Prisms (e.g. tourmaline). |
Habit: |
Pseudomorphous - Occurs in the form of another mineral. |
Hardness: |
5 - Apatite |
Luster: |
Vitreous (Glassy) |
Streak: |
white |
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Optical Properties of Organovaite-Mn
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Gladstone-Dale: |
CI meas= -0.006 (Superior) - where the CI = (1-KPDmeas/KC) CI calc= -0.042 (Good) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2578,KPDmeas= 0.2488,KC= 0.2474 |
Optical Data: |
Biaxial (+), a=1.683, b=1.692, g=1.775, bire=0.0920, 2V(Calc)=38, 2V(Meas)=40. Dispersion weak. |
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Calculated Properties of Organovaite-Mn
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Electron Density: |
relectron=2.79 gm/cc note: rOrganovaite-Mn =2.88 gm/cc. |
Fermion Index |
Fermion Index = 0.0191 Boson Index = 0.9809 |
Photoelectric: |
PEOrganovaite-Mn = 39.27 barns/electron U=PEOrganovaite-Mn x relectron= 109.44 barns/cc. |
Radioactivity: |
GRapi = 52.94 (Gamma Ray American Petroleum Institute Units)
Estimated Radioactivity from Organovaite-Mn - barely detectable
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Organovaite-Mn Classification
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Dana Class: |
60.1.3h.1 (60)Cyclosilicate Four-Membered Rings |
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(60.1)as Titanosilicates |
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(60.1.3h)Labuntsovite Group (Organovaite subgroup Monoclinic [C2/m]) |
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60.1.3h.1 Organovaite-Mn ! K2Mn(Nb,Ti)4(Si4O12)2(O,OH)4·6(H2O) Cm m |
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60.1.3h.2 Organovaite-Zn! K2Zn(Nb,Ti)4(Si4O12)2(O,OH)4·6(H2O) C 2/m 2/m |
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60.1.3h.3 Parakuzmenkoite-Fe! (K,Ba)2Fe(Ti,Nb)4(Si4O12)2(O,OH)4·7(H2O) C 2/m 2/m |
Strunz Class: |
VIII/E.07-190 VIII - Silicates |
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VIII/E - Cyklosilicates, quadruplet rings [Si4O11]8- |
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VIII/E.07 - Labuntsovite Group |
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VIII/E.07-10 Korobitsynite! Na3(Ti,Nb)2[Si4O12](OH,O)2·3-4(H2O) Pbam 2/m 2/m 2/m |
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VIII/E.07-20 Nenadkevichite (Na,Ca,K)(Nb,Ti)Si2O6(O,OH)·2(H2O) Pbam 2/m 2/m 2/m |
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VIII/E.07-30* Strontiochevkinite (Sr,REE)4Fe(Ti,Zr)2Ti2Si4O22 C 2/a 2/m |
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VIII/E.07-30 Tsepinite-Na! (Na,H3O,K,Sr,Ba)2(Ti,Nb)2[Si4O12](OH,O)2·3(H2O) Cm m |
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VIII/E.07-32 Tsepinite-K! (K,Ba,Na)2(Ti,Nb)2(Si4O12)(OH,O)2·3(H2O) Cm m |
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VIII/E.07-33 Tsepinite-Ca! (Ca,K,Na,[])2(Ti,Nb)2(Si4O12)(OH,O)2·4(H2O) C 2/m 2/m |
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VIII/E.07-34 Paratsepinite-Ba! (Ba,Na,K)2-x(Ti,Nb)2(Si4O12)(OH,O)2·4(H2O) C 2/m 2/m |
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VIII/E.07-40 Vuoriyarvite-K! (K,Na)2(Nb,Ti)2Si4O12(O,OH)2·4(H2O) Cm m |
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VIII/E.07-50 Clinophosinaite! Na3CaPSiO7 P 2/c 2/m |
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VIII/E.07-50* Kuzmenkoite-Zn! K2Zn(Ti,Nb)4(Si4O12)2(OH,O)4·6-8(H2O) Cm m |
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VIII/E.07-60* Kuzmenkoite-Mn! (K,Na)2(Mn,Fe)(Ti,Nb)4[Si4O12]2(OH)4·5(H2O) C 2/m 2/m |
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VIII/E.07-60 Phosinaite-(Ce)! Na13Ca2Ce[Si4O12](PO4)4 P 22121 2 2 2 |
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VIII/E.07-70 Gjerdingenite-Fe! K2[(H2O)2(Fe,Mn)][(Nb,Ti)4(Si4O12)2(O,OH)4]·4(H2O) C 2/m 2/m |
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VIII/E.07-80 Gjerdingenite-Mn! (K,Na)2(Mn,Fe)(Nb,Ti)4(Si4O12)2(O,OH)4·6(H2O) C 2/m 2/m |
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VIII/E.07-90 Karupmollerite-Ca! (Na,Ca,K)2Ca(Nb,Ti)4(Si4O12)2(O,OH)4·7(H2O) C 2/m 2/m |
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VIII/E.07-100 Lemmleinite-K! NaK2(Ti,Nb)2Si4O12(O,OH)2·2(H2O) C 2/m 2/m |
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VIII/E.07-110 Lemmleinite-Ba! Na2K2Ba1-xTi4(Si4O12)2(O,OH)4·5(H2O) C 2/m 2/m |
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VIII/E.07-130 Paralabuntsovite-Mg! Na8K8Mg8Ti16(Si4O12)8(O,OH)16·n(H2O) I2/m 2/m |
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VIII/E.07-140 Labuntsovite-Mg! Na4K4(Ba,K)(Mg,Fe)1xTi8(Si4O12)4(O,OH)8·10(H2O) C 2/m 2/m |
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VIII/E.07-150 Labuntsovite-Fe! Na4K4(Ba,K)2(Fe,Mg,Mn)1xTi8(Si4O12)4(O,OH)8·10(H2O) C 2/m 2/m |
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VIII/E.07-155 Labuntsovite-Mn Na4K4(Ba,K)(Mn,Fe)1x(Ti,Nb)8[Si4O12]4(O,OH)8·n(H2O),n=10-12 I2/m 2/m |
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VIII/E.07-170 Parakuzmenkoite-Fe! (K,Ba)2Fe(Ti,Nb)4(Si4O12)2(O,OH)4·7(H2O) C 2/m 2/m |
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VIII/E.07-180 Organovaite-Zn! K2Zn(Nb,Ti)4(Si4O12)2(O,OH)4·6(H2O) C 2/m 2/m |
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VIII/E.07-190 Organovaite-Mn K2Mn(Nb,Ti)4(Si4O12)2(O,OH)4·6(H2O) Cm m |
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VIII/E.07-200 Gutkovaite-Mn! CaK2Mn(Ti,Nb)4(Si4O12)2(O,OH)4·5(H2O) Cm m |
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VIII/E.07-205 Neskevaaraite-Fe! NaK3Fe(Ti,Nb)4(Si4O12)2(O,OH)4·6(H2O) Cm m |
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VIII/E.07-210 Alsakharovite-Zn! NaSrKZn(Ti,Nb)4(Si4O12)2(O,OH)4·7(H2O) Cm m |
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VIII/E.07-220 Lepkhenelmite-Zn! Ba2Zn(Ti,Nb)4(Si4O12)2(O,OH)4·7(H2O) Cm m |
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Other Organovaite-Mn Information
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References: |
NAME( AmMin, v 87, p 1734) PHYS. PROP.(AmMin, v 87, p 1734) OPTIC PROP.(AmMin, v 87, p 1734) |
See Also: |
Links to other databases for Organovaite-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
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Print or Cut-and-Paste your Organovaite-Mn Specimen Label here :
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Organovaite-Mn
K2Mn(Nb,Ti)4(Si4O12)2(O,OH)4·6(H2O)
Dana No: 60.1.3h.1 Strunz No: VIII/E.07-190
Locality:
Notes:
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