Chemistry:Naquite

From HandWiki
Naquite
General
CategoryMineral
Formula
(repeating unit)
FeSi
Strunz classification1.BB.15
Crystal systemCubic
Crystal classIsometric – tetartoidal
H-M symbol (23)
Space group P213
Unit cella = 4.48 Å, Z = 4
Identification
ColorSteel grey, tin white
CleavageNone
FractureBrittle – conchoidal
Mohs scale hardness6.5
|re|er}}Metallic
Streakgrayish black
DiaphaneityOpaque
Specific gravity6.1–6.2 (calc.)
References[1][2]

Naquite is an iron silicide mineral with the formula FeSi. It was discovered in the 1960s in Donetsk Oblast in Soviet Union, and named fersilicite, but was not approved by the International Mineralogical Association. It was later rediscovered in Nagqu, Tibet. Naquite occurs together with other rare iron silicide minerals, xifengite (Fe5Si3) and linzhiite (FeSi2).[2]

References

  1. Naquite. Mindat
  2. 2.0 2.1 Fersilicite. webmineral.com