Chemistry:Alpeite

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Alpeite
Alpeite.jpg
Alpeite crystals
General
CategoryMineral
Formula
(repeating unit)
Ca4Mn3+2Al2(Mn3+Mg)(SiO4)2(Si3O10)(V5+O4)(OH)6
Identification
ColorBrownish red
TenacityBrittle
Mohs scale hardness5.5-6
|re|er}}Vitreous, Silky
StreakBeige
DiaphaneityTransparent
Specific gravity3.374

Alpeite (IMA symbol: Apt[1]) is a calcium manganese magnesium silicate mineral with the chemical formula Ca4Mn3+2Al2(Mn3+Mg)(SiO4)2(Si3O10)(V5+O4)(OH)6. It is named for its type locality, the Monte Alpe mine in Italy.[2]

References

  1. Warr, L.N. (2021). "IMA-CNMNC approved mineral symbols". Mineralogical Magazine 85 (3): 291–320. doi:10.1180/mgm.2021.43. Bibcode2021MinM...85..291W. 
  2. Alpeite on mindat.org