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Natalyite

Pictures (1 Images total)

Hellgrüner Natalyit in Quarz
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Hellgrüner Natalyit in Quarz
analysiert; Bildbreite: 6 mm; Fundort: Sludyanka (Slyudyanka), Baikal-Gebiet, Buriatia Republik, Transbaikalien, Ost-Sibirien, Russland
Copyright: McSchuerf; Contribution: McSchuerf
Location: Russland/Sibirien, Föderationskreis/Irkutsk (Irkutskaja), Oblast/Baikalsee/Sljudjanka (Sludyanka; Slyudyanka)
Mineral: Natalyite
Image: 1160501634
Rating: 6 (votes: 1)
License: Usage for Mineralienatlas project only
Hellgrüner Natalyit in Quarz

analysiert; Bildbreite: 6 mm; Fundort: Sludyanka (Slyudyanka), Baikal-Gebiet, Buriatia Republik, Transbaikalien, Ost-Sibirien, Russland

Copyright: McSchuerf
Contribution: McSchuerf 2006-10-10
Locality: Sljudjanka (Sludyanka; Slyudyanka) / Baikalsee / Irkutsk (Irkutskaja), Oblast / Sibirien, Föderationskreis / Russland

Collectors Summary

Color gelbgrün, hellgrün
Streak color grün
Hardness (Mohs) 6.75
Crystal System monoklin, C2/c

Chemism

Chemical formula

Na(V3+,Cr3+)Si2O6

Chemical composition

Chrom, Natrium, Silicium, Sauerstoff, Vanadium

Unit weight: 226.3625827 u; Number of atoms in the formula: 10

Info

Empirical formula:

Na(V0.75Cr0.25)Si2O6

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)
Oxygen

O

42.41

6

60.00

15.9994300

95.9965800
Sodium

Na

10.16

1

10.00

22.9897702

22.9897702
Silicon

Si

24.81

2

20.00

28.0855300

56.1710600
Vanadium

V

16.88

0.75

7.50

50.9415100

38.2061325
Chromium

Cr

5.74

0.25

2.50

51.9961600

12.9990400

Analysis wt%

SiO2 : 53.15, Al2O3 : 0.75, V2O3 : 17.97, Cr2O3 : 12.23, MgO : 1.28, CaO : 1.78, Na2O : 12.65 (Ref: Zapiski Vsesoyuznogo Mineralogicheskogo Obshchestva, 1904-1974 85)

Strunz 9th edition incl. updates

9.DA.25

9: Silikate (Germanate)
D: Ketten- und Bandsilikate (Inosilikate)
A: Ketten- und Bandsilikate mit 2 periodischen Ketten SiO6; Pyroxen-Familie
25:Na Klinopyroxene; Jadeit-Gruppe

Lapis Classification

VIII/F.01-160

VIII: SILIKATE
F: Ketten- und Bandsilikate
1: Zweierketten [Si2O6] 4-; Pyroxen-Gruppe; Klinopyroxene

Classification by Hölzel

9.DD.400

9: SILICATES
D: Inosilicates; ~[Si2O6]4--...2-Chain
D: Jadeite-Group

Dana 8th edition

65.01.03c.05

65: Inosilicate Minerals
01: Inosilicates Inosilicate Single-Width Unbranched Chains, W=1 with chains P=2
03c: C2/c clinopyroxenes (Na clinopyroxenes)

IMA status

Anerkannt von der CNMNC

Mineral status

anerkanntes Mineral

IMA Classification

IMA Classification

 Pyroxene group  ⇒ Clinopyroxene group

Optical Properties

Color

gelbgrün, hellgrün

Streak color

grün

Diaphaneity (Transparency)

transparent

max. Birefringence

0.033
Birefringence chart\! Natalyite title=Birefringence chart Natalyite

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

1.737

RI value β

1.762

RI value γ / ε

1.770

Ri mean

1.756

2V angle

Biaxial (-) 64°

Crystallography

Crystal System

monoklin

Class (H-M)

2/m

Space Group number

15

Space Group

C2/c

Cell parameters a (Å)

9.58

Cell parameters b (Å)

8.72

Cell parameters c (Å)

5.27

Cell parameters a/b or c/a

1.099

Cell parameters c/b

0.604

Cell parameters α

90°

Cell parameters β

107.17

Cell parameters γ

90°

Z

4

Volume (ų)

420.623

X-Ray Powder Diffraction

6.24(60),
4.36(60),
2.96(100),
2.87(80),
2.52(100),
2.46(70),
2.19(60),
1.391(80)
XRD chart Natalyite

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)

6.75

VHN (Hardness Vickers)

1046 (50g)

Density (g/cm³)

3.55

3.574 ( ρ calc. Mineralienatlas )

(Co-)Type locality

(Co-)Type locality

Russland/Sibirien, Föderationskreis/Irkutsk (Irkutskaja), Oblast/Baikalsee/Sljudjanka (Sludyanka; Slyudyanka)/Pokhabikha-Tal/Pereval Marmorsteinbruch (Grube Kaber)

Preface

Author (Name, Year)

Reznitskiy & Skl'arov & Ushchapovskaya, 1985

References

Zapiski Vsesoyuznogo Mineralogicheskogo Obshchestva 114 (1985), 630

IMA group assignments

Other languages

German

Natalyit

English

Natalyite

French

Natalyite

Spanish

Natalyíta

Russian

Наталиит

CNMNC (IMA)-Number

IMA 1984-053

CNMNC symbol

Symbol

Nta

Locations with GPS information

IDs

GUSID (Global unique identifier short form) 1TcBW2hAjkiui8qoqhim1g
GUID (Global unique identifier) 5B0137D5-4068-488E-AE8B-CAA8AA18A6D6
Database ID 2671