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Tongbaite

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Formula:
Cr
 
3
C
 
2
System:OrthorhombicColour:Brownish yellow
Hardness:8½
Name:Named after its discovery locality, Liu village, Tongbai, Henan Province, China.
This page provides mineralogical data about Tongbaite.

Classification of Tongbaite

IMA status:Approved 1982
Strunz 8th edition ID:1/A.09-30
Nickel-Strunz 10th (pending) edition ID:1.BA.15

1 : ELEMENTS (Metals and intermetallic alloys; metalloids and nonmetals; carbides, silicides, nitrides, phosphides)
B : Metallic Carbides, Silicides, Nitrides and Phosphides
A : Carbides
Dana 7th edition ID:1.1.26.1
Dana 8th edition ID:1.1.17.1

1 : NATIVE ELEMENTS AND ALLOYS
1 : Metals, other than the Platinum Group
Hey's CIM Ref.:2.4

2 : Carbides, Nitrides, Silicides and Phosphides
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Type Occurrence of Tongbaite

Type Locality:Liu village, Tongbai Co., Nanyang Prefecture, Henan Province, China
Year of Discovery:1983

Physical Properties of Tongbaite

Lustre:Metallic
Diaphaneity (Transparency):Opaque
Colour:Brownish yellow
Hardness (Mohs):8½

Crystallography of Tongbaite

Crystal System:Orthorhombic
Cell Parameters:a = 5.52Å, b = 11.48Å, c = 2.82Å
Ratio:a:b:c = 0.481 : 1 : 0.246
Unit Cell Volume:V 178.70 ų (Calculated from Unit Cell)

Chemical Properties of Tongbaite

Formula:
Cr
 
3
C
 
2
Essential elements:C, Cr
All elements listed in formula:C, Cr

Relationship of Tongbaite to other Species

Related Minerals - Nickel-Strunz Grouping):

- +
1.BA.05Cohenite
(Fe,Ni,Co)
 
3
C
1.BA.10Haxonite
(Fe,Ni)
 
23
C
 
6
1.BA.10Isovite
(Cr,Fe)
 
23
C
 
6
1.BA.20Khamrabaevite
(Ti,V,Fe)C
1.BA.20Niobocarbide
(Nb,Ta)C
1.BA.20Tantalcarbide
TaC
1.BA.25Qusongite
WC
1.BA.30Yarlongite
Cr
 
4
Fe
 
4
NiC
 
4
Related Minerals - Hey's Index Grouping:

- +
2.1Moissanite
SiC
2.2Sinoite
Si
 
2
N
 
2
O
2.3Osbornite
TiN
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 Tongbaite

Synonyms:
IMA1982-003
Other Languages:
German:Tongbait
Russian:Тонгбаит
Simplified Chinese:桐柏矿
Spanish:Tongbaita

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 Tongbaite

Reference List:

- +
Tian Peixue, Fang Qingsong, Chen Keqiao, and Peng Zhizhong (1983): A study on tongbaite - A new mineral. Acta Mineralogica Sinica 3(4), 241-245 (in Chinese with English abstract). - American Mineralogist (1985), 70, 218 (abstract).

Chen Keqiao, Tian Peixue, Shi Nicheng, and Peng Zhizhong (1983): A study on tongbaite, Cr3C2 - A new mineral. Ziran Zazhi 6, 478-479.

Dai Ming-quan, Shi Ni-cheng, Ma Zhe-sheng, Xiong Ming, Bai Wen-ji, Fang Qing-song, Yan Bing-gang, and Yang Jing-sui (2004): Crystal structure determination of tongbaite. Acta Mineralogica Sinica 24(1), 1-6 (in Chinese with English abstract).

Internet Links for Tongbaite

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

    The map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.
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    (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.
    China
     
    • Henan Province
      • Nanyang Prefecture
        • Tongbai Co.
    		Tian Peixue, Fang Qingsong, Chen Keqiao, and Peng Zhizhong (1983): Acta Mineralogica Sinica 3(4), 241-245.
    http://www.encyclopedia.com/doc/1G1-130213802.html
    Russia
     
    • Urals Region
      • Middle Urals
        • Ekaterinburgskaya (Sverdlovskaya) Oblast'
          • Isovsky District
    		Generalov M.E., Naumov V.A., Mokhov A.V., Trubkin N.V. (1998) Isovite (Cr,Fe)23C6 - a new mineral from the gold-platinum -bearing placiers of the Urals, - Zapiski VMO, 127(5), pp. 26-37 (in Russian).
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