Lovdarite Mineral Data (original) (raw)

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

Click Here for Larger Lovdarite Image in a New Browser Window Images:

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 - PyramidalH-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),

Click Here for Large Lovdarite Structure Window Crystal Structure:

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Help on Above

| | Merlino S , European Journal of Mineralogy , 2 (1990) p.809-817, Lovdarite, K4Na12(Be8Si28O72).18H2O, a zeolite-like mineral:, structural features and OD character | | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- |

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:

78.06.02.01 (78)Unclassified silicates

(78.06)possible tectosilicates

(78.06.02)Dana Group

78.06.02.01 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
15 - WWW-MINCRYST
16 - Zeolite Database by Bruno Herreros

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Ask about Lovdarite here :
Ask-A-Mineralogist from the Mineralogical Society of America
Mindat.org's Discussion Groups
Original Rockhounds Discussion Group
Rockhounds Discussion Group on Yahoo Groups
Mineral Discussion Forum from Fabre Minerals - also available in Espa�ol

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

Lovdarite

K2Na6Be4Si14O36•9(H2O)
Dana No: 78.06.02.01 Strunz No: 09.GF.15
Locality:

Notes: