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Lovdarite (Lovdarit)

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Lovdarit
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Lovdarit

farblose Kristalle von Lovdarit, Yubileinaya Pegmatit, Karnasurt, Lovozero, Kola, Russland; BB < 1 mm

Copyright: MinTreasure.com (Carsten Slotta)
Contribution: openpit 2020-02-03
Locality: Jubiläumspegmatit (Yubileinaya; Yubileinoye; Jubilejnaja) / Karnasurt, Berg / Lovozero / Kola-Halbinsel / Murmansk, Oblast / Nordwestrussland, Föderationskreis / Russland

Collectors Summary

Color farblos, gelb, gelblich weiß, weiß
Streak color weiß
Hardness (Mohs) 5.5
Solubility - verdünnte HCl, HNO3 oder H2SO4
Crystal System orthorhombisch, Pma2

Chemism

Chem­ical formula

K2Na6Be4Si14O36·9H2O

Chem­ical com­po­si­tion

Beryllium, Natrium, Silicium, Kalium, Sauerstoff, Wasserstoff

Unit weight: 1383.4987864 u; Number of atoms in the formula: 89

Info

Empirical formula:

K2Na6Be4Si14O36·9H2O

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Hydrogen

H

1.31

18

20.22

1.0079470

18.1430460

Beryllium

Be

2.61

4

4.49

9.0121823

36.0487292

Oxygen

O

52.04

45

50.56

15.9994300

719.9743500

Sodium

Na

9.97

6

6.74

22.9897702

137.9386212

Silicon

Si

28.42

14

15.73

28.0855300

393.1974200

Potassium

K

5.65

2

2.25

39.0983100

78.1966200

Anal­y­sis wt%

SiO2 : 56.13, Al2O3 : 1.77, CaO : 0.49, Na2O : 14.95, K2O : 6.28, BeO : 6.90, H2O : 12.29 (Ref: Doklady Akademiia Nauk, SSSR 73)

Strunz 9th edi­tion incl. updates

9.GF.15

9: Silikate (Germanate)
G: Gerüstsilikate (Tektosilikate) mit zeolithischem H2O; Familie der Zeolithe
F: [Leucit]-Typ-Gerüste
15:Lovdarit-Gruppe

Lapis Clas­sifica­tion

VIII/J.17-010

VIII: SILIKATE
J: Gerüstsilikate (mit Zeolithen)
17: Gerüstsilikate mit Zeolithstruktur

Clas­sifica­tion by Hölzel

9.FO.120

9: SILICATES
F: Tektosilicates
O: Zeolites with unknown Structure

Dana 8th edi­tion

78.06.02.01

78: Unclassified Silicate Minerals
06: Unclassified silicates possible tectosilicates

IMA sta­tus

Anerkannt von der CNMNC

Min­eral sta­tus

anerkanntes Mineral

IMA Classification

IMA Clas­sifica­tion

Zeolite group  ⇒ LOV zeolite structure group

Optical Properties

Color

farblos, gelb, gelblich weiß, weiß

Streak color

weiß

Diaphane­ity (Trans­parency)

transparent bis durchscheinend

max. Birefrin­gence

0.005

Birefringence chart\! Lovdarite title=Birefringence chart Lovdarite

Michel-Levy Color Chart viewed according to the maximum birefringence (at 30μm). Mineral color is not taken into account. Click on the image to enlarge or change thickness.

RI value α / ω / n

1.513

RI value β

1.516

RI value γ / ε

1.518

Ri mean

1.516

2V angle

Biaxial (+) 90°

Optical Data Luminescence

Color LW-UV (365nm)

 

grün

LW-UV Intensity

sehr schwach

Color SW-UV (254nm)

 

grün

SW-UV Intensity

stark

After­glow (Per­sistant Lumi­nes­cence)

keine Daten

Crystallography

Crystal Sys­tem

orthorhombisch

Class (H-M)

mm2

Space Group number

28

Space Group

Pma2

Cell param­e­ters a (Å)

39.576

Cell param­e­ters b (Å)

6.931

Cell param­e­ters c (Å)

7.153

Cell param­e­ters a/b or c/a

5.710

Cell param­e­ters c/b

1.032

Cell param­e­ters α

90°

Cell param­e­ters β

90°

Cell param­e­ters γ

90°

Z

2

Volumne (ų)

1962.077

X-Ray Pow­der Diffrac­tion

6.61(60),
4.99(80),
3.51(40),
3.18(100),
3.10(40),
2.97(40),
2.50(50),
2.31(50)

XRD chart Lovdarite

Calculated from d-spacing and intensity at 0.1541838 nm (Cu)

Crystals 3D

Open larger view

Crystal Structure 3D

Open larger view

Physical Properties

Hard­ness (Mohs)

5.5

VHN (Hard­ness Vick­ers)

530 (ungefähre Angabe abgeleitet aus der Mohshärte)

Density (g/cm³)

2.33

2.342 ( ρ calc. Mineralienatlas )

Insta­bil­ity

- verdünnte HCl, HNO3 oder H2SO4

Preface

Author (Name, Year)

Men'shikov & Denisov & Uspenskaya & Lipatova, 1973

References

Transactions (Doklady) of the USSR Academy of Sciences, Earth Science Sections 213 (1973), 130

IMA group assignments



 
 
 
K2Na6Be4Si14O36·9H2O
orthorhombisch
Pma2

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Actuality: 22. Jun 2022 - 16:26:46

Other languages

German

Lovdarit

Spanish

Lovdarita

French

Lovdarite

English

Lovdarite

Russian

Ловдарит

Traditional Chinese

鈹矽鈉石

Simplified Chinese

铍硅钠石

CNMNC symbol

Symbol

Lov

Automatic Links to external internet sources (Responsibility is with the operator)

German pages

DeWikiPedia - search for: Lovdarit
Google-Bilder-Suche - search for: Lovdarit
Mineralienatlas.de (Forum) - search for: Lovdarit

English pages

Mindat - search for: Lovdarite
Webmineral - search for:Lovdarite
Handbook-of-Mineralogy - search for: Lovdarite
RRUFF - Raman, XRD and other mineral data - search for: Lovdarite
RRUFF - References and PDF downloads - search for: Lovdarite
American-Mineralogist-Crystal-Structure-Database - search for: Lovdarite
Strahlen.org - search for: Lovdarite

Russian pages

Webmineral.ru - search for: Ловдарит

Mineral Dealer

German pages

hausen - Mineralgroßhandel - search for: Lovdarit
Crystal-Treasure.com - search for: Lovdarit
Bosse - search for: Lovdarit
Edelsteine Neuburg - Gundolf Fischer - search for: Lovdarit

Locations with GPS information