Mineralogy Database

Nierite Mineral Data

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General Nierite Information

Help on Chemical  Formula: Chemical Formula: Si3N4
Help on Composition: Composition: Molecular Weight = 140.28 gm
   Silicon   60.06 %  Si
   Nitrogen  39.94 %  N
            100.00 % 
Help on Empirical Formula: Empirical Formula: Si3N4
Help on Environment: Environment: The grains probably formed by exsolution of Si and N from kamacite, perryite and schreibersite during parent-body metamorphism.
Help on IMA Status: IMA Status: Approved IMA 1995
Help on Locality: Locality: In perchloric acid-resistant residues of three ordinary chondrite meteorites and one enstatite meteorite. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: For A. O. Nier (1912-1994), who was responsible for the now accepted measurement of the atmospheric N-isotope composition.
Help on Name Pronunciation: Name Pronunciation: Nierite Say NIERITE
Help on Synonym: Synonym: ICSD 34096
  PDF 41-360

Nierite Crystallography

Help on Axial Ratios: Axial Ratios: a:c = 1:0.7248
Help on Cell Dimensions: Cell Dimensions: a = 7.74, c = 5.61, Z = 4; V = 291.06 Den(Calc)= 3.20
Help on Crystal System: Crystal System: Trigonal - Ditrigonal Pyramidal H-M Symbol (3m) Space Group: P 31c
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 2.55(1), 2.89(0.9), 2.6(0.8),2.32(0.6), 2.08(0.5), 4.32(0.5), 3.37(0.3), 3.88(0.3),

Physical Properties of Nierite

Help on Cleavage: Cleavage: None
Help on Color: Color: Colorless, Brown, Brownish red.
Help on Density: Density: 3.17 - 3.18, Average = 3.17
Help on Diaphaneity: Diaphaneity: Transparent
Help on Fracture: Fracture: Brittle - Generally displayed by glasses and most non-metallic minerals.
Help on Habit: Habit: Granular - Generally occurs as anhedral to subhedral crystals in matrix.
Help on Habit: Habit: Tabular - Form dimensions are thin in one direction.
Help on Hardness: Hardness: 9 - Corundum
Help on Luster: Luster: Adamantine
Help on Streak: Streak: white

Optical Properties of Nierite

Help on Optical Data: Optical Data: Uniaxial (-), e=2.02, w=2.03, bire=0.0100.

Calculated Properties of Nierite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=3.19 gm/cc
note: Specific Gravity of Nierite =3.20 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.42
Boson Index = 0.58
Help on Photoelectric: Photoelectric: PENierite = 2.12 barns/electron
U=PENierite x rElectron Density= 6.76 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Nierite is Not Radioactive

Nierite Classification

Help on  Dana Class: Dana Class: (01)Native Elements
  (01.03)with semi-metallic and non-metallic elements
  (01.03.10)Dana Group Nierite Si3N4 P 31c 3m
Help on  Strunz Class: Strunz Class: 01.DB.05 01 - ELEMENTS (Metals and intermetallic alloys; metalloids and nonmetals; carbides, silicides, nitrides, phosphides)
  01.D - Nonmetallic Carbides and Nitrides
  01.DB -Nonmetallic nitrides
01.DB.05 Nierite Si3N4 P 31c 3m

Other Nierite Information

Help on References: References: NAME( MinRec) PHYS. PROP.(Am.Min.,Vol.81,1996) OPTIC PROP.(MinRec)
Help on See Also: See Also: Links to other databases for Nierite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - GeoScienceWorld
4 - Google Images
5 - Google Scholar
6 - Handbook of Mineralogy (MinSocAm)
7 - MinDAT
8 - Mineralienatlas (Deutsch)
9 - Online Mineral Museum
10 - QUT Mineral Atlas
11 - Ruff.Info

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Dana No: Strunz No: 01.DB.05





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