Alpersite (IMA symbol: Aps[1]) is a magnesium copper sulfate mineral with the chemical formula (Mg,Cu)[SO4]·7H2O. It is named after United States Geological Survey geochemist Charles N. Alpers and was first described in 2006.[2]

Alpersite
Alpersite crystals (white) with slavíkite
General
CategoryMineral
Formula
(repeating unit)
(Mg,Cu)[SO4]·7H2O
IMA symbolAps
Identification
ColorBlue, pale blue, whitish, turquoise
FractureIrregular/Uneven
TenacityBrittle
Mohs scale hardness2.5
LusterVitreous
StreakWhite
DiaphaneityTransparent
Specific gravity1.820

References

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  1. ^ Warr, L.N. (2021). "IMA-CNMNC approved mineral symbols". Mineralogical Magazine. 85 (3): 291–320. Bibcode:2021MinM...85..291W. doi:10.1180/mgm.2021.43. S2CID 235729616.
  2. ^ Alpersite Archived 2019-03-26 at the Wayback Machine on mindat.org