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.

Name Pronunciation:

Lovozerite + Pronunciation

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),

Crystal Structure:

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Yamnova N A , Egorov-Tismenko Y K , Pekov I V , Crystallography Reports , 46 (2001) p.937-941, Refined crystal structure of lovozerite Na2CaZr[Si6O12(OH,O)6]*H2O, Locality: Kola Peninsula, Russia

Physical Properties of Lovozerite

Cleavage:

{???} Indistinct, {???} Indistinct

Color:

Dark brown, Reddish brown, Black.

Density:

2.3 - 2.7, Average = 2.5

Diaphaneity:

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
Ncalc = 1.51 - 1.59

Optical Data:

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

Calculated Properties of Lovozerite

Electron Density:

Bulk Density (Electron Density)=2.47 gm/cc
note: Specific Gravity of Lovozerite =2.50 gm/cc.

Fermion Index:

Fermion Index = 0.02
Boson Index = 0.98

Photoelectric:

PE_Lovozerite= 16.48 barns/electron
U=PE_Lovozerite x rElectron Density= 40.68 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Lovozerite is Not Radioactive

Lovozerite Classification

Dana Class:

61.01.02a.01 (61)Cyclosilicate Six-Membered Rings

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

(61.01.02a)Lovozerite group (HEX and HEX-R subgroup)

61.01.02a.01 Lovozerite H4Na2Ca(Zr,Ti)[Si6O18] R 3m 3 2/m

61.01.02a.02 Kazakovite Na6MnTiSi6O18 R 3m 3 2/m

61.01.02a.03 Tisinalite Na3H3(Mn,Ca,Fe)TiSi6(O,OH)18•2(H2O) R 3m 3 2/m

61.01.02a.04 Zirsinalite Na6(Ca,Mn,Fe)Zr[Si6O18] R 3m 3 2/m

61.01.02a.05 Combeite Na2Ca2Si3O9 P 3₂21,P 3₁21 3 2

61.01.02a.06 Kapustinite! Na5.5Mn0.25ZrSi6O16(OH)2 C 2/m 2/m

Strunz Class:

09.CJ.15 09 - SILICATES (Germanates)

09.C - Cyclosilicates

09.CJ -[Si6O18]12- 6-membered single rings (sechser-Einfachringe),

09.CJ.15 Combeite Na2Ca2Si3O9 P 3₂21,P 3₁21 3 2

09.CJ.15 Kazakovite Na6MnTiSi6O18 R 3m 3 2/m

09.CJ.15 Lovozerite H4Na2Ca(Zr,Ti)[Si6O18] R 3m 3 2/m

09.CJ.15 Zirsinalite Na6(Ca,Mn,Fe)Zr[Si6O18] R 3m 3 2/m

09.CJ.15 Kapustinite! Na5.5Mn0.25ZrSi6O16(OH)2 C 2/m 2/m

09.CJ.15 Tisinalite Na3H3(Mn,Ca,Fe)TiSi6(O,OH)18•2(H2O) R 3m 3 2/m

09.CJ.15 Litvinskite! Na2([],Na,Mn)Zr[Si6O12(OH,O)6] Cm m

Other Lovozerite Information

References:

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

See Also:

Links to other databases for Lovozerite :
1 - Alkali-Nuts(English)
2 - Alkali-Nuts(Francais)
3 - Am. Min. Crystal Structure Database
4 - Athena
5 - EUROmin Project
6 - Ecole des Mines de Paris
7 - GeoScienceWorld
8 - Google Images
9 - Google Scholar
10 - Handbook of Mineralogy (MinSocAm)
11 - Handbook of Mineralogy (UofA)
12 - MinDAT
13 - Mineralienatlas (Deutsch)
14 - Online Mineral Museum
15 - QUT Mineral Atlas
16 - Ruff.Info
17 - WWW-MINCRYST

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

Lovozerite

H4Na2Ca(Zr,Ti)[Si6O18]
Dana No: 61.01.02a.01 Strunz No: 09.CJ.15
Locality:

Notes: