Organovaite-Mn Mineral Data

Organovaite-Mn Mineral Data

General Organovaite-Mn Information

Chemical Formula:

K2Mn(Nb,Ti)4(Si4O12)2(O,OH)4·6(H2O)

Composition:

Molecular Weight = 2,372.13 gm

Potassium 3.79 % K 4.57 % K₂O

Barium 1.16 % Ba 1.29 % BaO

Sodium 0.39 % Na 0.52 % Na₂O

Calcium 0.84 % Ca 1.18 % CaO

Titanium 5.65 % Ti 9.43 % TiO₂

Manganese 4.17 % Mn 5.38 % MnO

Niobium 20.76 % Nb 29.69 % Nb₂O₅

Aluminum 0.11 % Al 0.21 % Al₂O₃

Zinc 1.65 % Zn 2.06 % ZnO

Iron 0.24 % Fe 0.30 % FeO

Silicon 18.83 % Si 40.27 % SiO₂

Hydrogen 0.59 % H 5.32 % H₂O

Oxygen 41.82 % O

______ ______

100.00 % 100.24 % = TOTAL OXIDE

Empirical Formula:

K_2.3Zn_0.6Ca_0.5Na_0.4Ba_0.2Mn²⁺_1.8Fe²⁺_0.1Nb_5.3Ti_2.8Si_15.9Al_0.1O₅₄(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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Organovaite-Mn Crystallography

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

$Help on X Ray Diffraction:$ X Ray Diffraction:

By Intensity(I/I_o): 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

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

Optical Properties of Organovaite-Mn

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.

Calculated Properties of Organovaite-Mn

Electron Density:

r_electron=2.79 gm/cc
note: r_{Organovaite-Mn}=2.88 gm/cc.

Fermion Index

Fermion Index = 0.0191
Boson Index = 0.9809

Photoelectric:

PE_{Organovaite-Mn}= 39.27 barns/electron
U=PE_{Organovaite-Mn} x r_electron= 109.44 barns/cc.

Radioactivity:

GRapi = 52.94 (Gamma Ray American Petroleum Institute Units)

Estimated Radioactivity from Organovaite-Mn - barely detectable

Organovaite-Mn Classification

Dana Class:

60.1.3h.1 (60)Cyclosilicate Four-Membered Rings

(60.1)as Titanosilicates

(60.1.3h)Labuntsovite Group (Organovaite subgroup Monoclinic [C2/m])

60.1.3h.1 Organovaite-Mn ! K2Mn(Nb,Ti)4(Si4O12)2(O,OH)4·6(H2O) Cm m

60.1.3h.2 Organovaite-Zn! K2Zn(Nb,Ti)4(Si4O12)2(O,OH)4·6(H2O) C 2/m 2/m

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

VIII/E - Cyklosilicates, quadruplet rings [Si4O11]8-

VIII/E.07 - Labuntsovite Group

VIII/E.07-10 Korobitsynite! Na3(Ti,Nb)2[Si4O12](OH,O)2·3-4(H2O) Pbam 2/m 2/m 2/m

VIII/E.07-20 Nenadkevichite (Na,Ca,K)(Nb,Ti)Si2O6(O,OH)·2(H2O) Pbam 2/m 2/m 2/m

VIII/E.07-30* Strontiochevkinite (Sr,REE)4Fe(Ti,Zr)2Ti2Si4O22 C 2/a 2/m

VIII/E.07-30 Tsepinite-Na! (Na,H3O,K,Sr,Ba)2(Ti,Nb)2[Si4O12](OH,O)2·3(H2O) Cm m

VIII/E.07-32 Tsepinite-K! (K,Ba,Na)2(Ti,Nb)2(Si4O12)(OH,O)2·3(H2O) Cm m

VIII/E.07-33 Tsepinite-Ca! (Ca,K,Na,[])2(Ti,Nb)2(Si4O12)(OH,O)2·4(H2O) C 2/m 2/m

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

VIII/E.07-40 Vuoriyarvite-K! (K,Na)2(Nb,Ti)2Si4O12(O,OH)2·4(H2O) Cm m

VIII/E.07-50 Clinophosinaite! Na3CaPSiO7 P 2/c 2/m

VIII/E.07-50* Kuzmenkoite-Zn! K2Zn(Ti,Nb)4(Si4O12)2(OH,O)4·6-8(H2O) Cm m

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

VIII/E.07-60 Phosinaite-(Ce)! Na13Ca2Ce[Si4O12](PO4)4 P 22121 2 2 2

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

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

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

VIII/E.07-100 Lemmleinite-K! NaK2(Ti,Nb)2Si4O12(O,OH)2·2(H2O) C 2/m 2/m

VIII/E.07-110 Lemmleinite-Ba! Na2K2Ba1-xTi4(Si4O12)2(O,OH)4·5(H2O) C 2/m 2/m

VIII/E.07-130 Paralabuntsovite-Mg! Na8K8Mg8Ti16(Si4O12)8(O,OH)16·n(H2O) I2/m 2/m

VIII/E.07-140 Labuntsovite-Mg! Na4K4(Ba,K)(Mg,Fe)1xTi8(Si4O12)4(O,OH)8·10(H2O) C 2/m 2/m

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

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

VIII/E.07-170 Parakuzmenkoite-Fe! (K,Ba)2Fe(Ti,Nb)4(Si4O12)2(O,OH)4·7(H2O) C 2/m 2/m

VIII/E.07-180 Organovaite-Zn! K2Zn(Nb,Ti)4(Si4O12)2(O,OH)4·6(H2O) C 2/m 2/m

VIII/E.07-190 Organovaite-Mn K2Mn(Nb,Ti)4(Si4O12)2(O,OH)4·6(H2O) Cm m

VIII/E.07-200 Gutkovaite-Mn! CaK2Mn(Ti,Nb)4(Si4O12)2(O,OH)4·5(H2O) Cm m

VIII/E.07-205 Neskevaaraite-Fe! NaK3Fe(Ti,Nb)4(Si4O12)2(O,OH)4·6(H2O) Cm m

VIII/E.07-210 Alsakharovite-Zn! NaSrKZn(Ti,Nb)4(Si4O12)2(O,OH)4·7(H2O) Cm m

VIII/E.07-220 Lepkhenelmite-Zn! Ba2Zn(Ti,Nb)4(Si4O12)2(O,OH)4·7(H2O) Cm m

Other Organovaite-Mn Information

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 :

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: