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Sinoite

Formula:
Si
 
2
N
 
2
O
System:OrthorhombicColour:Colourless
Name:The name reflects its composition: silicon (Si), nitrogen (N) and oxygen (O).
This page provides mineralogical data about Sinoite.

Classification of Sinoite

IMA status:Approved
Strunz 8th edition ID:1/A.10-50
Nickel-Strunz 10th (pending) edition ID:1.DB.10

1 : ELEMENTS (Metals and intermetallic alloys; metalloids and nonmetals; carbides, silicides, nitrides, phosphides)
D : Nonmetallic Carbides and Nitrides
B : Nonmetallic nitrides
Dana 7th edition ID:1.3.8.1
Dana 8th edition ID:1.3.9.1

1 : NATIVE ELEMENTS AND ALLOYS
3 : Semi-metals and non-metals
Hey's CIM Ref.:2.2

2 : Carbides, Nitrides, Silicides and Phosphides
mindat.org URL:http://www.mindat.org/min-3676.html
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Type Occurrence of Sinoite

Type Locality:Jajh deh Kot Lalu meteorite, Sindh, Pakistan
Year of Discovery:1964

Physical Properties of Sinoite

Lustre:Vitreous
Colour:Colourless

Crystallography of Sinoite

Crystal System:Orthorhombic
Cell Parameters:a = 8.84Å, b = 5.47Å, c = 4.83Å
Ratio:a:b:c = 1.616 : 1 : 0.883
Unit Cell Volume:V 233.55 ų (Calculated from Unit Cell)

Optical Data of Sinoite

Type:Biaxial (-)
RI values: nα = 1.740 nβ = 1.855 nγ = 1.855
Maximum Birefringence:δ = 0.115

Chart shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:Very High
Dispersion:r > v moderate

Chemical Properties of Sinoite

Formula:
Si
 
2
N
 
2
O
Essential elements:N, O, Si
All elements listed in formula:N, O, Si

Relationship of Sinoite to other Species

Related Minerals - Nickel-Strunz Grouping):

- +
1.DB.05Nierite
Si
 
3
N
 
4
Related Minerals - Hey's Index Grouping:

- +
2.1Moissanite
SiC
2.3Osbornite
TiN
2.4Tongbaite
Cr
 
3
C
 
2
2.5Carlsbergite
CrN
2.6Siderazot
Fe
 
5
N
 
2
2.7Gupeiite
Fe
 
3
Si
2.8Xifengite
Fe
 
5
Si
 
3
2.9Khamrabaevite
(Ti,V,Fe)C
2.10Haxonite
(Fe,Ni)
 
23
C
 
6
2.11Cohenite
(Fe,Ni,Co)
 
3
C
2.12Roaldite
(Fe,Ni)
 
4
N
2.13Suessite
(Fe,Ni)
 
3
Si
2.14Schreibersite
(Fe,Ni)
 
3
P
2.15Barringerite
(Fe,Ni)
 
2
P
2.16Perryite
(Ni,Fe)
 
5
(Si,P)
 
2

Other Names for Sinoite

Other Languages:
German:Sinoit
Russian:Синоит
Spanish:Sinoita

Other Information

Health Warning:No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for Sinoite

Reference List:Andersen, C.A., Keil, K., and Mason, B. (1964) Sinoite oxynitride: A meteoritic mineral. Science: 146: 256-257.

Idrestedt, I. and Brosset, C. (1964) Structure of Si2N2O. Acta Chemica Scandinavica: 18: 1879-1886.

Brosset, C. and Idrestedt I. (1964) Structure of silicon oxynitride, Si2N2O. Nature: 201: 1211.

American Mineralogist (1965): 50: 521.

Keil, K. and Andersen, C.A. (1965a) Occurrences of sinoite, Si2N2O, in meteorites. Nature: 207: 745.

Keil, K. and Andersen, C.A. (1965b) Electron microprobe study of the Jajh deh Kot enstatite chondrite. Geochimica et Cosmochimica Acta: 29: 621-632.

Srinivasa, S.R., Cratz, L., Jorgensen, J.D., Worlton, T.G., Beyerlein, R.A., and Billy, M. (1977) High-pressure neutron diffraction study of Si2N2O. Journal of Applied Crystallography: 10: 167-171.

Khodakovsky, I.L. and Petaev, M.I. (1981) Thermodinamicheskie svoict va I usloviya obrazovaniya osbornita, sinoita i karlsbergita v meteoritakh. Geokhimiya: 3: 329-340.

Mirgorodsky, A.P., Baraton, M.I., and Quintard, P. (1989) Lattice dynamics of silicon oxynitride, Si2N2O: vibrational spectrum, elastic and piezoelectric properties. Journal of Physics: Condensed Matter: 1: 10053-10066.

Sjberg, J., Helgesson, G., and Idrestedt, I. (1991) Refinement of the structure of Si2N2O. Acta Crystallographica: C 47: 2438-2441.

Li, Y.L., Zheng, F., Liang, Y., Ma, X.F., Cui, S.J., and Ishigaki, T. (2001) Reaction and formation of crystalline silicon oxynitride in Si-O-N systems under solid high pressure. Journal of American Ceramic Society: 84: 875-877.

Kroll, P. and Milko, M. (2003) Theoretical investigation of the solid state reaction of silicon nitride and silicon dioxide forming silicon oxynitride (SiN2O) under pressure. Zeitschrift für anorganische und allgemeine Chemie: 629: 1737-1750.

Sekine, T., He, H., Kobayashi, T., and Shibata, K. (2006) Sinoite (Si2N2O) shocked at pressures of 28 to 64 GPa. American Mineralogist: 91: 463-466.

Internet Links for Sinoite

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  • Raman and XRD data at RRUFF project
  • American Mineralogist Crystal Structure Database
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  • Sinoite details from Handbook of Mineralogy (PDF)
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    Localities for Sinoite

    (TL) indicates type locality. ? indicates mineral may be doubtful at this locality. All other localities listed without reference should be considered as uncertain and unproven until references can be found.
    Pakistan
     
    • Sindh
    		American Mineralogist, 50, pp. 521 (1965); Science 146 (1964), 256
    Mineral and/or Locality
    Google
     
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