Alpersite
(Mg,Cu)[SO4]·7H2OIMA symbol Aps Identification Color Blue, pale blue, whitish, turquoise Fracture Irregular/Uneven Tenacity Brittle Mohs scale hardness 2.5 Luster Vitreous Streak White Diaphaneity Transparent Specific gravity 1.820
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]
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