https://www.edelsteine-neuburg.de
https://www.mineralbox.biz
https://www.mineraliengrosshandel.com
https://www.mineral-bosse.de
'._('einklappen').'
 

Irtyshite (Irtyshit)

Additional Functions

Collectors Summary

Hardness (Mohs) 6.75
Crystal System hexagonal, P63/m, P63

Chemism

Chemical formula

Na2(Ta,Nb)4O11

Chemical composition

Natrium, Niob, Tantal, Sauerstoff

Unit weight: 857.7233824 u; Number of atoms in the formula: 17

Info

Empirical formula:

Na2(Ta0.75Nb0.25)4O11

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Oxygen

O

20.52

11

64.71

15.9994300

175.9937300

Sodium

Na

5.36

2

11.76

22.9897702

45.9795404

Niobium

Nb

10.83

1

5.88

92.9063820

92.9063820

Tantalum

Ta

63.29

3

17.65

180.9479100

542.8437300

Analysis wt%

Ø Na2O : 6.46, PbO : 0.41, SnO2 : 0.58, Nb2O5 : 12.07, Ta2O5 : 80.00 (Ref: Mineralogicheskii Zhurnal 85)

Strunz 9th edition incl. updates

4.DJ.05

4: Oxide, Hydroxide (Oxide, Hydroxide, V[5,6]-Vanadate, Arsenite, Antimonite, Bismutite, Sulfite, Selenite, Tellurite, Iodate)
D: Metall: Sauerstoff = 1:2 und vergleichbare
J: Mit großen (± mittelgroßen) [Kationen]; vielgestaltige (polyhedrale) Gerüste
05:Natrotantit-Gruppe

Lapis Classification

IV/D.26-030

IV: OXIDE
D: Oxide mit Verhältnis Metall : Sauerstoff = 1:2 (MO2 und verwandte Verbindungen)

Classification by Hölzel

4.DJ.500

4: OXIDES
D: Dioxides
J: Titanates, Niobates and Tantalates, C large, V medium ò 2
5: Other Niobates, Tantalates

Dana 8th edition

08.06.02.03

08: Multiple Oxides with Nb, Ta, and Ti
06: Multiple Oxides with Nb, Ta, and Ti
02: Calciotantite Group

IMA status

anerkannt

Mineral status

anerkanntes Mineral

Optical Properties

RI value α / ω / n

2.179

RI value γ / ε

mean

Ri mean

2.179

2V angle

Uniaxial

Crystallography

Crystal System

hexagonal

Class (H-M)

6/m, 6

Space Group number

176, 173

Space Group

P63/m, P63

Cell parameters a (Å)

6.231

Cell parameters b (Å)

-

Cell parameters c (Å)

36.77

Cell parameters a/b or c/a

5.901

Cell parameters c/b

-

Cell parameters α

90°

Cell parameters β

90°

Cell parameters γ

120°

Z

6

Volume (ų)

1236.345

X-Ray Powder Diffraction

6.13(70),
5.18(60),
3.082(90),
3.029(100),
2.780(90),
2.480(60),
1.929(40),
1.802(40)

XRD chart Irtyshite

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

Physical Properties

Hardness (Mohs)

6.75

VHN (Hardness Vickers)

1110 (30g)

Density (g/cm³)

7.03 (berechnet)

6.912 ( ρ calc. Mineralienatlas )

Preface

Author (Name, Year)

Voloshin & Pakhomovskiy & Bulgak & Perlina, 1985

References

American Mineralogist (1986): 71: 1545.

Strunz Mineralogical Tables 9. Edition (2001), 225.

Other languages

German

Irtyshit

Spanish

Irtyshita

French

Irtyshite

English

Irtyshite

Russian

Иртышит

CNMNC (IMA)-Number

IMA 1984-025

CNMNC symbol

Symbol

Irt

IDs

GUSID (Global unique identifier short form) OCzCf3WG3ku9-CZ2_4gEvQ
GUID (Global unique identifier) 7FC22C38-8675-4BDE-BDF8-2676FF8804BD
Database ID 1740