Xifengite

The Fe analogue of mavlyanovite. 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. The Fe(Si)-analogue of wenjiite.

History

Activities related to discovery and approval of the group members

Structural context

Xifengite
Crystal System hexagonalCrystal Class dihexagonal dipyramidalSpace Group P63/mcm
a6.5412—6.8335 (6.7139)
b6.5412—6.8335 (6.7139)
c4.558—4.7426 (4.6821)
alpha90
beta90
gamma120
volume168.896—191.761 (182.8514)

Based on 17 measurements

Chemical context

Stoichiometric formulas

Xifengite
mindat.org
  • March 13, 2023Fe5Si3
IMA
  • March 13, 2023Fe5Si3
mineralogy.rocks
  • Aug. 30, 2022Fe5Si3

Elements recorded on EPMA

17
Fe
17
Si
4
Mn

Physical properties

ColorColor entities, recognized using a custom trained NER model
    • steel-black
    Color noteOriginal color note from the source
    Grey, steel-black
    StreakStreak entities, recognized using a custom trained NER model
      Streak noteOriginal streak note from the source
      Black
      Lustre
      Metallic
      Transparency
      Opaque
      Tenacity
      brittle
      Hardness
      5
      Calculated density
      6.45