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Nierite

Collectors Summary

Color farblos, bräunlichrot
Streak color weiß
Hardness (Mohs) 9
Solubility - Säuren
Crystal System trigonal, P31c

Chemism

Chem­ical formula

Si3N4

Chem­ical com­po­si­tion

Silicium, Stickstoff

Unit weight: 140.28347 u; Number of atoms in the formula: 7

Info

Empirical formula:

Si3N4

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Nitrogen

N

39.94

4

57.14

14.0067200

56.0268800

Silicon

Si

60.06

3

42.86

28.0855300

84.2565900

Strunz 9th edi­tion incl. updates

1.DB.05

1: Elemente (Metalle, intermetallische Legierungen, Metalloide u. Nichtmetalle, Carbide, Silicide, Nitride u. Phosphide)
D: Nichtmetallische Kohlenstoffverbindungen (Carbide) und Stickstoffverbindungen (Nitride)
B: Nichtmetallnitride
05:Nierit-Gruppe

Lapis Clas­sifica­tion

I/A.10-045

I: ELEMENTE
A: Metalle und intermetallische Verbindungen
10: Carbide, Nitride, Phosphide und Silicide (metallartige Verbindungen)

Clas­sifica­tion by Hölzel

1.BC.530

1: ELEMENTS
B: Carbides, Silicides, Phosphides, Nitrides
C: Nitrides

IMA sta­tus

Anerkannt von der CNMNC

Min­eral sta­tus

anerkanntes Mineral

Optical Properties

Color

farblos, bräunlichrot

Streak color

weiß

max. Birefrin­gence

0.01

Birefringence chart\! Nierite title=Birefringence chart Nierite

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

2.03

RI value γ / ε

2.02

Ri mean

2.027

2V angle

Uniaxial (-)

Crystallography

Crystal Sys­tem

trigonal

Class (H-M)

3m

Space Group number

159

Space Group

P31c

Cell param­e­ters a (Å)

7.74

Cell param­e­ters b (Å)

-

Cell param­e­ters c (Å)

5.61

Cell param­e­ters a/b or c/a

0.725

Cell param­e­ters c/b

-

Z

4

Volumne (ų)

291.055

X-Ray Pow­der Diffrac­tion

4.310(80),
3.877(40),
2.883(100),
2.593(80),
2.538(100),
2.313(50),
2.080(40),
1.486(30)

XRD chart Nierite

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

Crystal Structure 3D

Open larger view

Physical Properties

Hard­ness (Mohs)

9

VHN (Hard­ness Vick­ers)

3650 (ungefähre Angabe abgeleitet aus der Mohshärte)

Density (g/cm³)

3.11 (berechnet)

3.201 ( ρ calc. Mineralienatlas )

Insta­bil­ity

- Säuren

Preface

Author (Name, Year)

Lee & Russell & Arden & Pillinger, 1995

References

Meteoritics 30 (1995), 387

Related minerals "Strunz Classification" (9. Edition) [Mineral | Chemical formula | Crystal system : Class (H-M) : Space Group | Indenture number]

Nierite

Si3N4

trigonal : 3m : P31c

1.DB.05

Related minerals "Lapis Classification" [Mineral | Chemical formula | Crystal system : Class (H-M) : Space Group | Indenture number]

Osbornite

TiN

kubisch : m3m : Fm3m

I/A.10-010

Carlsbergite

CrN

kubisch : m3m : Fm3m

I/A.10-020

Qingsongite

BN

kubisch : 43m : F43m

I/A.10-025

Roaldite

Fe4N

kubisch : m3m : Pm3m

I/A.10-030

Siderazot

Fe3N1.33

hexagonal : 6/mmm : P63/mmc

I/A.10-040

Nierite

Si3N4

trigonal : 3m : P31c

I/A.10-045

Sinoite

Si2N2O

orthorhombisch : mm2 : Cmc21

I/A.10-050

Related minerals "Hoelzel Classification" [Mineral | Chemical formula : Crystal system : Class (H-M) | Space Group | Indenture number]

Sinoite

Si2N2O

orthorhombisch : mm2 : Cmc21

1.BC.500

Nierite

Si3N4

trigonal : 3m : P31c

1.BC.530

IMA Number

IMA 1994-032

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