Mineralogy Database

Lovdarite Mineral Data

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General Lovdarite Information

Help on Chemical  Formula: Chemical Formula: K2Na6Be4Si14O36•9(H2O)
Help on Composition: Composition: Molecular Weight = 1,466.77 gm
   Potassium    5.28 %  K     6.36 % K2O
   Barium       0.19 %  Ba    0.21 % BaO
   Sodium      11.27 %  Na   15.19 % Na2O
   Calcium      0.36 %  Ca    0.50 % CaO
   Magnesium    0.03 %  Mg    0.05 % MgO
   Titanium     0.07 %  Ti    0.11 % TiO2
   Beryllium    2.53 %  Be    7.01 % BeO
   Aluminum     0.96 %  Al    1.81 % Al2O3
   Iron         0.08 %  Fe    0.11 % Fe2O3
   Silicon     26.67 %  Si   57.06 % SiO2
   Phosphorus   0.04 %  P     0.10 % P2O5
   Hydrogen     1.28 %  H    11.46 % H2O
   Oxygen      51.26 %  O
              ______        ______ 
              100.00 %       99.96 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: K1.98Na7.19Ca0.13Ba0.02Be4.11Al0.47Ti0.02Fe3+0.02Mg0.02Si13.93Al0.05P0.02O37.66�9.33(H2O)
Help on Environment: Environment: A late hydrothermal mineral in alkalic pegmatites in a differentiated alkalic massif.
Help on IMA Status: IMA Status: Approved IMA 1973
Help on Locality: Locality: From the Jubilee pegmatite, Mt. Karnasurt, Lovozero massif, Kola Peninsula, Russia. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: From the Russian phrase "dar Lovozera", for a gift of Lovozero.
Help on Name Pronunciation: Name Pronunciation: Lovdarite + Pronunciation Say LOVDARITE
Help on Synonym: Synonym: ICSD 69408
  PDF 39-1367

Lovdarite Image

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Comments: Bright white crystal sprays of lovdarite on fine-grained white natrolite.
Location: Yubileinaya Pegmatite, Mount Karnasurt, Lovozero Massif, Kola Peninsula, Murmansk, Russia. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Lovdarite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =5.7101:1:1.032
Help on Cell Dimensions: Cell Dimensions: a = 39.576, b = 6.9308, c = 7.1526, Z = 2; V = 1,961.91 Den(Calc)= 2.48
Help on Crystal System: Crystal System: Orthorhombic - Pyramidal H-M Symbol (mm2) Space Group: Pma2
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 3.136(1), 3.288(1), 4.96(0.9),

Physical Properties of Lovdarite

Help on Cleavage: Cleavage: {100} Distinct, {010} Distinct, {001} Distinct
Help on Color: Color: Colorless, Yellow, Yellowish white, White.
Help on Density: Density: 2.33
Help on Diaphaneity: Diaphaneity: Transparent to Translucent
Help on Habit: Habit: Prismatic - Crystals Shaped like Slender Prisms (e.g. tourmaline).
Help on Habit: Habit: Radial - Crystals radiate from a center without producing stellar forms (e.g. stibnite)
Help on Hardness: Hardness: 5-6 - Between Apatite and Orthoclase
Help on Luminescence: Luminescence: Sometimes Fluorescent, Short UV=bright green.
Help on Luster: Luster: Vitreous (Glassy)
Help on Streak: Streak: white

Optical Properties of Lovdarite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= 0.003 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= 0.063 (Fair) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2079,KPDmeas= 0.2213,KC= 0.2219
Ncalc = 1.52 - 1.55
Help on Optical Data: Optical Data: Biaxial (+), a=1.513, b=1.516, g=1.518, bire=0.0050, 2V(Calc)=78, 2V(Meas)=90.

Calculated Properties of Lovdarite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=2.33 gm/cc
note: Specific Gravity of Lovdarite =2.33 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.03
Boson Index = 0.97
Help on Photoelectric: Photoelectric: PELovdarite = 2.63 barns/electron
U=PELovdarite x relectron= 6.14 barns/cc.
Help on Radioactivity: Radioactivity:

GRapi = 76.28 (Gamma Ray American Petroleum Institute Units)
Concentration of Lovdarite per GRapi unit = 1.31 (%)

Estimated Radioactivity from Lovdarite - barely detectable


Lovdarite Classification

Help on  Dana Class: Dana Class: (78)Unclassified silicates
  (78.06)possible tectosilicates
  (78.06.02)Dana Group Lovdarite K2Na6Be4Si14O36•9(H2O) Pma2 mm2
Help on  Strunz Class: Strunz Class: 09.GF.15 09 - SILICATES (Germanates)
  09.G - Tektosilicates with Zeolitic H2O
  09.GF -Other Rare Zeolites
09.GF.15 Lovdarite K2Na6Be4Si14O36•9(H2O) Pma2 mm2

Other Lovdarite Information

Help on References: References: NAME( AntBidBlaNic2) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)
Help on See Also: See Also: Links to other databases for Lovdarite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - EUROmin Project
4 - Ecole des Mines de Paris
5 - GeoScienceWorld
6 - Google Images
7 - Google Scholar
8 - Handbook of Mineralogy (MinSocAm)
9 - Handbook of Mineralogy (UofA)
10 - MinDAT
11 - Mineralienatlas (Deutsch)
12 - Online Mineral Museum
13 - QUT Mineral Atlas
14 - Ruff.Info
16 - Zeolite Database by Bruno Herreros

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Dana No: Strunz No: 09.GF.15





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