Litvinskite Mineral Data

Litvinskite Mineral Data

General Litvinskite Information

Chemical Formula:

Na2([ ],Na,Mn)Zr[Si6O12(OH,O)6]

Composition:

Molecular Weight = 618.88 gm

Sodium 9.29 % Na 12.52 % Na₂O

Zirconium 14.74 % Zr 19.91 % ZrO₂

Manganese 1.33 % Mn 1.72 % MnO

Silicon 27.23 % Si 58.25 % SiO₂

Hydrogen 0.88 % H 7.86 % H₂O

Oxygen 46.53 % O

______ ______

100.00 % 100.26 % = TOTAL OXIDE

Empirical Formula:

Na₂Na_0.5Mn²⁺_0.15ZrSi₆O_12.6(OH)_5.4

Environment:

Hyperagpaitic pegmatite. Lovozerite group

IMA Status:

Approved IMA 1999 (Dana # Added)

Locality:

Mount Alluaiv, Lovozero alkaline massif, Kola Penninsula, Russia. Link to MinDat.org Location Data.

Name Origin:

Named for Galina P. Litvinskaya (1920-1994), former crystallographer of the Moscow State University.

Synonym:

IMA1999-017

Litvinskite Image

Images:

Litvinskite

Comments: Dark cherry-red litvinskite in matrix.
Location: Shkatulka pegmatite, Umbozero mine, Alluaiv Mt, Lovozero Massif, Kola Peninsula, Murmanskaja Oblast', Northern Region, Russia. Scale: Picture size 4 mm.
© Thomas Witzke / Abraxas-Verlag

Litvinskite Crystallography

Axial Ratios:

a:b:c =1.0364:1:0.7198

Cell Dimensions:

a = 10.589, b = 10.217, c = 7.355, Z = 2; beta = 92.91° V = 794.70 Den(Calc)= 2.59

Crystal System:

Monoclinic - DomaticH-M Symbol (m) Space Group: Cm

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

By Intensity(I/I_o): 3.238(1)(130,221,112), 5.29(1)(111,200), 3.329(0.74)(112,310),7.37(0.44)(110,001), 2.981(0.39)(131,022,311)2.553(0.37)(040,222), 3.674(0.32),

Physical Properties of Litvinskite

Cleavage:

[110] Imperfect

Color:

Dark cherry red, Dark reddish brown.

Density:

2.61

Diaphaniety:

Transparent

Fracture:

Conchoidal - Fractures developed in brittle materials characterized by smoothly curving surfaces, (e.g. quartz).

Habit:

Granular - Generally occurs as anhedral to subhedral crystals in matrix.

Hardness:

5 - Apatite

Luster:

Vitreous (Glassy)

Streak:

white

Optical Properties of Litvinskite

Gladstone-Dale:

CI meas= 0.003 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= -0.005 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2181,KPDmeas= 0.2165,KC= 0.2171

Optical Data:

Biaxial (-), a=1.546, b=1.574, g=1.575, bire=0.0290

Calculated Properties of Litvinskite

Electron Density:

r_electron=2.57 gm/cc
note: r_Litvinskite=2.61 gm/cc.

Fermion Index

Fermion Index = 0.02947
Boson Index = 0.97053

Photoelectric:

PE_Litvinskite= 20.80 barns/electron
U=PE_Litvinskite x r_electron= 53.46 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Litvinskite is Not Radioactive

Litvinskite Classification

Dana Class:

61.1.2b.4 (61)Cyclosilicate Six-Membered Rings

(61.1)with [Si6O18] rings; possible (OH) and Al substitution

(61.1.2b)Lovozerite group (Ortho and MON subgroup)

61.1.2b.1 Imandrite Na12Ca3Fe2Si12O36 Pnnm 2/m 2/m 2/m

61.1.2b.2 Koashvite Na6(Ca,Mn)(Ti,Fe)Si6O18·(H2O) Pmnb 2/m 2/m 2/m

61.1.2b.3 Petarasite Na5Zr2Si6O18(Cl,OH)·2(H2O) P 2₁/m 2/m

61.1.2b.4 Litvinskite ! Na2([],Na,Mn)Zr[Si6O12(OH,O)6] Cm m

Strunz Class:

VIII/E.16-25 VIII - Silicates

VIII/E - Cyklosilicates, six rings [Si6O18]12-

VIII/E.16 - Lovozerite group

VIII/E.16-10 Imandrite Na12Ca3Fe2Si12O36 Pnnm 2/m 2/m 2/m

VIII/E.16-20 Kazakovite Na6MnTiSi6O18 R 3m 3 2/m

VIII/E.16-23 Kapustinite! Na5.5Mn0.25ZrSi6O16(OH)2 C 2/m 2/m

VIII/E.16-25 Litvinskite Na2([],Na,Mn)Zr[Si6O12(OH,O)6] Cm m

VIII/E.16-30 Lovozerite H4Na2Ca(Zr,Ti)[Si6O18] R 3m 3 2/m

VIII/E.16-40 Zirsinalite Na6(Ca,Mn,Fe)Zr[Si6O18] R 3m 3 2/m

VIII/E.16-50 Koashvite Na6(Ca,Mn)(Ti,Fe)Si6O18·(H2O) Pmnb 2/m 2/m 2/m

VIII/E.16-60 Tisinalite Na3H3(Mn,Ca,Fe)TiSi6(O,OH)18·2(H2O) R 3m 3 2/m

VIII/E.16-70 Petarasite Na5Zr2Si6O18(Cl,OH)·2(H2O) P 2₁/m 2/m

Other Litvinskite Information

References:

NAME( AmMin, v 86, p 377) PHYS. PROP.(AmMin, v 86, p 377) OPTIC PROP.(AmMin, v 86, p 377)

See Also:

Links to other databases for Litvinskite :
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 10 - WWW-MINCRYST

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Litvinskite

Na2([ ],Na,Mn)Zr[Si6O12(OH,O)6]
Dana No: 61.1.2b.4 Strunz No: VIII/E.16-25
Locality:

Notes: