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Luobusaite

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Formula:
Fe0.84Si2
Colour:
steel-gray
Lustre:
Metallic
Specific Gravity:
4.55 (Calculated)
Crystal System:
Orthorhombic
Name:
Named for the type locality, Luobusa Mine, Tibet.
One of many natural Fe-Si phases; beside the approved species (listed below) you may want to compare Unnamed (Fe silicide I), Unnamed (Fe silicide II) and UM2000-60-Si:Fe.


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Classification of LuobusaiteHide

Approved
Approval Year:
2006
1.BB.25

1 : ELEMENTS (Metals and intermetallic alloys; metalloids and nonmetals; carbides, silicides, nitrides, phosphides)
B : Metallic Carbides, Silicides, Nitrides and Phosphides
B : Silicides
1.1.33.7

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

Physical Properties of LuobusaiteHide

Metallic
Transparency:
Opaque
Colour:
steel-gray
Hardness:
VHN100=1086 kg/mm2 - Vickers
Fracture:
Conchoidal
Density:
4.55 g/cm3 (Calculated)

Chemical Properties of LuobusaiteHide

Formula:
Fe0.84Si2
IMA Formula:
Fe0.84Si2

Crystallography of LuobusaiteHide

Crystal System:
Orthorhombic
Class (H-M):
mmm (2/m 2/m 2/m) - Dipyramidal
Space Group:
Cmca
Cell Parameters:
a = 9.874 Å, b = 7.784 Å, c = 7.829 Å
Ratio:
a:b:c = 1.268 : 1 : 1.006
Unit Cell V:
601.7 ų
Z:
16

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
3.06 (80)
2.849 (20)
2.402 (25)
1.977 (40)
1.889 (60)
1.865 (40)
1.844 (100)
1.750 (15)

Type Occurrence of LuobusaiteHide

General Appearance of Type Material:
irregular grains
Place of Conservation of Type Material:
China Geological Museum

Synonyms of LuobusaiteHide

Other Language Names for LuobusaiteHide

Simplified Chinese:罗布莎矿
Traditional Chinese:羅布莎礦

Related Minerals - Nickel-Strunz GroupingHide

1.BB.ZangboiteTiFeSi2Orth. mmm (2/m 2/m 2/m) : Pbam
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.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
1.1.33.8ZangboiteTiFeSi2Orth. mmm (2/m 2/m 2/m) : Pbam
1.1.33.13MavlyanoviteMn5Si3Hex. 6/mmm (6/m 2/m 2/m) : P63/mcm

Fluorescence of LuobusaiteHide

non-fluorescent

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 LuobusaiteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Bai, W., N. Shi, Q. Fang, G. Li, J. Yang, M.Xiong & H. Rong (2007): "Luobusaite- a new mineral": Acta Geologica Sinica 80(10), 1487-1490.[Chinese with English abstract] [MinAbs MA 07M/0529] (abstract)

Internet Links for LuobusaiteHide

Localities for LuobusaiteHide

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.)
Wenji Bai, Nicheng Shi, Qingsong Fang, Guowu Li, Ming Xiong, Jingsui Yang, and He Rong (2006): Acta Geologica Sinica 80(5), 656-659; MinAbs MA 07M/0529 (abstract).
          • 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.
Russia
 
  • Far-Eastern Region
    • Kamchatka Oblast'
S. ISHIMARU, S. ARAI and H. SHUKUNO (2009) Metals in oxidized and metasomatized peridotite xenoliths derived from the mantle wedge. Goldschmidt Conference Abstracts 2009.
Mineral and/or Locality  
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