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Zangboite

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Formula:
TiFeSi2
Colour:
Steel grey
Lustre:
Metallic
Hardness:
Specific Gravity:
5.09 (Calculated)
Crystal System:
Orthorhombic
Name:
After the Yarlong Zangbo River (also known as Brahmaputra), which flows near the type locality.
The first approved natural titanium iron silicide. Compare 'Unnamed (Fe-Si-Ti Alloy)', 'UM1989-10-E:FeSiTi', and 'UM1989-11-E:FeSiTi'.


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Classification of ZangboiteHide

Approved
Approval Year:
2007
1.BB.

1 : ELEMENTS (Metals and intermetallic alloys; metalloids and nonmetals; carbides, silicides, nitrides, phosphides)
B : Metallic Carbides, Silicides, Nitrides and Phosphides
B : Silicides
1.1.33.8

1 : NATIVE ELEMENTS AND ALLOYS
1 : Metals, other than the Platinum Group

Physical Properties of ZangboiteHide

Metallic
Transparency:
Opaque
Colour:
Steel grey
Streak:
Black
Hardness:
5½ on Mohs scale
Hardness Data:
Estimated
Comment:
Tested with a steel needle
Tenacity:
Brittle
Cleavage:
None Observed
Fracture:
Conchoidal
Density:
5.09 g/cm3 (Calculated)

Chemical Properties of ZangboiteHide

Formula:
TiFeSi2
Common Impurities:
Cr,Mn,Zr,Al

Crystallography of ZangboiteHide

Crystal System:
Orthorhombic
Class (H-M):
mmm (2/m 2/m 2/m) - Dipyramidal
Space Group:
Pbam
Setting:
Pbam
Cell Parameters:
a = 8.6053(10) Å, b = 9.5211(11) Å, c = 7.6436(9) Å
Ratio:
a:b:c = 0.904 : 1 : 0.803
Unit Cell V:
626.25 ų
Z:
12

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
3.8358 (50)
2.3010 (30)
2.2318 (50)
2.1291 (100)
2.0251 (65)
1.9155 (57)
1.2996 (20)
Comments:
Obtained from a small single crystal using single-crystal repeat-rotation diffraction method.

Type Occurrence of ZangboiteHide

General Appearance of Type Material:
Grains and tabular crystals generally between 0.002 and 0.15 mm across.
Place of Conservation of Type Material:
Geological Museum of China, Beijing, China (catalogue number M11651).
Geological Setting of Type Material:
The mineral was separated from the heavy-mineral constituents derived from a 1500 kg sample of chromitite hosted in ophiolitic harzburgite.

Synonyms of ZangboiteHide

Related Minerals - Nickel-Strunz GroupingHide

1.BB.BrownleeiteMnSiIso. 2 3 : P21 3
1.BB.05Suessite(Fe,Ni)3Si
1.BB.05MavlyanoviteMn5Si3Hex. 6/mmm (6/m 2/m 2/m) : P63/mcm
1.BB.10UM2001-18-Si:CuPtSn(Cu,Pt)4Si
1.BB.10Perryite(Ni,Fe)5(Si,P)2Trig.
1.BB.15NaquiteFeSiIso. 2 3 : P21 3
1.BB.20LinzhiiteFeSi2Tet. 4/mmm (4/m 2/m 2/m) : P4/mmm
1.BB.25LuobusaiteFe0.84Si2Orth. mmm (2/m 2/m 2/m) : Cmca
1.BB.30GupeiiteFe3SiIso.
1.BB.35HapkeiteFe2SiIso. m3m (4/m 3 2/m) : Pm3m
1.BB.40XifengiteFe5Si3Hex. 6/mmm (6/m 2/m 2/m) : P63/mcm

Related Minerals - Dana Grouping (8th Ed.)Hide

1.1.33.2NaquiteFeSiIso. 2 3 : P21 3
1.1.33.3LinzhiiteFeSi2Tet. 4/mmm (4/m 2/m 2/m) : P4/mmm
1.1.33.6HapkeiteFe2SiIso. m3m (4/m 3 2/m) : Pm3m
1.1.33.7LuobusaiteFe0.84Si2Orth. mmm (2/m 2/m 2/m) : Cmca
1.1.33.13MavlyanoviteMn5Si3Hex. 6/mmm (6/m 2/m 2/m) : P63/mcm

Other InformationHide

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

References for ZangboiteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Li, G., Fang, Q., Shi, N., Bai, W., Yang, J., Xiong, M., Ma, Z., Rogn, He (2009) Zangboite (TiFeSi2), a new mineral from Luobusha, Tibet, China.
Canadian Mineralogist, 47, 1265-1274.

Internet Links for ZangboiteHide

Localities for ZangboiteHide

This 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.

Locality ListHide

- This locality has map coordinates listed. - This locality has estimated coordinates. ⓘ - Click for further information on this occurrence. ? - Indicates mineral may be doubtful at this locality. - Good crystals or important locality for species. - World class for species or very significant. (TL) - Type Locality for a valid mineral species. (FRL) - First Recorded Locality for everything else (eg varieties). Struck out - Mineral was erroneously reported from this locality. Faded * - Never found at this locality but inferred to have existed at some point in the past (eg from pseudomorphs.)

All localities listed without proper references should be considered as questionable.
China (TL)
 
  • Tibet Autonomous Region
    • Shannan Prefecture (Lhokha Prefecture; Lhoka Prefecture)
      • Qusum Co. (Qusong Co.)
        • Luobusha ophiolite ("Luobusa ophiolite")
          • Luobusha Mine ("Luobusa" Mine)
Li, G., Fang, Q., Shi, N., Bai, W., Yang, J., Xiong, M., Ma, Z., Rogn, He (2009) Zangboite (TiFeSi2), a new mineral from Luobusha, Tibet, China. Canadian Mineralogist, 47, 1265-1274.
USA
 
  • Michigan
    • Livingston Co.
Essene, E.J., Fisher, D.C. (1986): Lightning Strike Fusion: Extreme Reduction and Metal-Silicate Liquid Immiscibility. Science: 234(4773): 189-193
Mineral and/or Locality  
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