Alpersite
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| Alpersite | |
|---|---|
 Alpersite crystals (white) with slavíkite | |
| General | |
| Category | Minerals |
| Formula | (Mg,Cu)[SO4]·7H2O |
| IMA 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]