Organovaite-Zn Mineral Data

Organovaite-Zn Mineral Data

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General Organovaite-Zn Information

Chemical Formula:

K2Zn(Nb,Ti)4(Si4O12)2(O,OH)4·6(H2O)

Composition:

Molecular Weight = 2,439.14 gm

Potassium 3.05 % K 3.67 % K₂O

Barium 2.25 % Ba 2.51 % BaO

Sodium 0.47 % Na 0.64 % Na₂O

Calcium 0.82 % Ca 1.15 % CaO

Titanium 6.28 % Ti 10.48 % TiO₂

Manganese 0.45 % Mn 0.58 % MnO

Niobium 18.28 % Nb 26.15 % Nb₂O₅

Aluminum 0.22 % Al 0.42 % Al₂O₃

Zinc 4.29 % Zn 5.34 % ZnO

Iron 0.23 % Fe 0.29 % FeO

Silicon 18.19 % Si 38.92 % SiO₂

Hydrogen 1.12 % H 10.01 % H₂O

Oxygen 44.34 % O

______ ______

100.00 % 100.16 % = TOTAL OXIDE

Empirical Formula:

K_1.9Na_0.5Ca_0.5Ba_0.4Zn_1.6Mn²⁺_0.2Fe²⁺_0.1Nb_4.8Ti_3.2Si_15.8Al_0.2O_52.5(OH)_3.1·12(H₂O)

Environment:

Alkaline pegmatites. Sometimes forms pseudomorphs after vuonnemite. Labuntsovite group; structure.

IMA Status:

Approved IMA 2002 (Dana # Added)

Locality:

Karnasurt Mountain, Lovozero massif, Kola Peninsula, Russia. Link to MinDat.org Location Data.

Name Origin:

Named for Natalia Ivanovna Organova (1929-), Russian crystallographer and the Zn end-member.

Synonym:

IMA2001-006

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Organovaite-Zn Crystallography

Axial Ratios:

a:b:c =1.0436:1:1.1247

Cell Dimensions:

a = 14.535, b = 13.927, c = 15.665, Z = 1; beta = 117.6° V = 2,810.20 Den(Calc)= 1.44

Crystal System:

Monoclinic - PrismaticH-M Symbol (2/m) Space Group: C 2/m

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

By Intensity(I/I_o): 6.96(1)(020,002), 3.222(0.84)(422,400,4043.114(0.66)(042,024),2.514(0.3)(442,402), 4.924(0.3)(022), 6.43(0.24)(200,202), 1.43(0.22),

Physical Properties of Organovaite-Zn

Cleavage:

None

Color:

Pink, Pinkish brown, White.

Density:

2.88

Diaphaniety:

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-Zn

Gladstone-Dale:

CI meas= 0.007 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= -0.986 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.4991,KPDmeas= 0.2495,KC= 0.2513

Optical Data:

Biaxial (+), a=1.683, b=1.688, g=1.785, bire=0.1020

Calculated Properties of Organovaite-Zn

Electron Density:

r_electron=2.81 gm/cc
note: r_{Organovaite-Zn}=2.88 gm/cc.

Fermion Index

Fermion Index = 0.02266
Boson Index = 0.97734

Photoelectric:

PE_{Organovaite-Zn}= 40.28 barns/electron
U=PE_{Organovaite-Zn} x r_electron= 113.04 barns/cc.

Radioactivity:

GRapi = 42.83 (Gamma Ray American Petroleum Institute Units)

Estimated Radioactivity from Organovaite-Zn - barely detectable

Organovaite-Zn Classification

Dana Class:

60.1.3h.2 (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.07-180 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-Zn Information

References:

NAME( AmMin, v 88, p 932) PHYS. PROP.(AmMin, v 88, p 932) OPTIC PROP.(AmMin, v 88, p 932)

See Also:

Links to other databases for Organovaite-Zn :
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-Zn Specimen Label here :

Organovaite-Zn

K2Zn(Nb,Ti)4(Si4O12)2(O,OH)4·6(H2O)
Dana No: 60.1.3h.2 Strunz No: VIII/E.07-180
Locality:

Notes: