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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
Location: Russland/Nordwestrussland, Föderationskreis/Murmansk, Oblast/Kola-Halbinsel/Lovozero/Karnasurt, Berg/Jubiläumspegmatit (Yubileinaya; Yubileinoye; Jubilejnaja)
Mineral: Lovdarite
Image: 1580762815
License: Usage for Mineralienatlas project only
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

(Co-)Type locality

(Co-)Type locality

Russland/Nordwestrussland, Föderationskreis/Murmansk, Oblast/Kola-Halbinsel/Lovozero/Karnasurt, Berg/Jubiläumspegmatit (Yubileinaya; Yubileinoye; Jubilejnaja)

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

 
Zeolite group
 
 
 

 
 
LOV zeolite structure group
 
 
 

 
 
 
Lovdarite
K2Na6Be4Si14O36·9H2O
orthorhombisch
Pma2

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Actuality: 19. Mar 2023 - 16:26:25

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

Locations with GPS information