Lovozerite Mineral Data

Lovozerite Mineral Data +

General Lovozerite Information

Chemical Formula:

H4Na2Ca(Zr,Ti)[Si6O18]

Composition:

Molecular Weight = 626.98 gm

Sodium 7.33 % Na 9.89 % Na₂O

Calcium 6.39 % Ca 8.94 % CaO

Zirconium 10.91 % Zr 14.74 % ZrO₂

Titanium 1.91 % Ti 3.19 % TiO₂

Silicon 26.88 % Si 57.50 % SiO₂

Hydrogen 0.64 % H 5.75 % H₂O

Oxygen 45.93 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

H₄Na₂Zr_0.75CaTi_0.25Si₆O₁₈

Environment:

Sodalite xenoliths. Sometimes pseudomorphous after eudialyte.

IMA Status:

Valid Species (Pre-IMA) 1939

Locality:

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

Name Origin:

Named for the locality.

Synonym:

ICSD 20595

PDF 28-1201

Lovozerite Image

Images:

Lovozerite

Comments: Pinkish lovozerite with red crystalline eudialyte.
Location: Mount Rasvumchorr, Khibiny Massif, Kola Peninsula, Murmansk District, Russia. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Lovozerite Crystallography

Axial Ratios:

a:c = 1:1.28297

Cell Dimensions:

a = 10.174, c = 13.053, Z = 3; V = 1,170.10 Den(Calc)= 2.67

Crystal System:

Trigonal - Hexagonal ScalenohedralH-M Symbol (3 2/m) Space Group: R 3m

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

By Intensity(I/I_o): 3.9(1), 4.36(0.5), 5.22(0.2),

Physical Properties of Lovozerite

Cleavage:

[???] Indistinct, [???] Indistinct

Color:

Dark brown, Reddish brown, Black.

Density:

2.3 - 2.7, Average = 2.5

Diaphaniety:

Opaque to translucent

Fracture:

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

Habit:

Massive - Uniformly indistinguishable crystals forming large masses.

Habit:

Microscopic Crystals - Crystals visible only with microscopes.

Habit:

Pseudo Cubic - Crystals show a cubic outline.

Hardness:

5 - Apatite

Luster:

Vitreous - Resinous

Optical Properties of Lovozerite

Gladstone-Dale:

CI meas= -0.008 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= 0.057 (Good) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2079,KPDmeas= 0.222,KC= 0.2203

Optical Data:

Uniaxial (-), e=1.549, w=1.561, bire=0.0120.

Calculated Properties of Lovozerite

Electron Density:

r_electron=2.47 gm/cc
note: r_Lovozerite=2.50 gm/cc.

Fermion Index

Fermion Index = 0.02757
Boson Index = 0.97243

Photoelectric:

PE_Lovozerite= 16.48 barns/electron
U=PE_Lovozerite x r_electron= 40.68 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Lovozerite is Not Radioactive

Lovozerite Classification

Dana Class:

61.1.2a.1 (61)Cyclosilicate Six-Membered Rings

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

(61.1.2a)Lovozerite group (HEX and HEX-R subgroup)

61.1.2a.1 Lovozerite H4Na2Ca(Zr,Ti)[Si6O18] R 3m 3 2/m

61.1.2a.2 Kazakovite Na6MnTiSi6O18 R 3m 3 2/m

61.1.2a.3 Tisinalite Na3H3(Mn,Ca,Fe)TiSi6(O,OH)18·2(H2O) R 3m 3 2/m

61.1.2a.4 Zirsinalite Na6(Ca,Mn,Fe)Zr[Si6O18] R 3m 3 2/m

61.1.2a.5 Combeite Na2Ca2Si3O9 P 3₂21,P 3₁21 3 2

61.1.2a.6 Kapustinite! Na5.5Mn0.25ZrSi6O16(OH)2 C 2/m 2/m

Strunz Class:

VIII/E.16-30 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 Lovozerite Information

References:

NAME( Dana8) PHYS. PROP.(Dana8) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)

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Print or Cut-and-Paste your Lovozerite Specimen Label here :

Lovozerite

H4Na2Ca(Zr,Ti)[Si6O18]
Dana No: 61.1.2a.1 Strunz No: VIII/E.16-30
Locality:

Notes: