Ahlfeldite
A variety of Minerals
What is Ahlfeldite?
Ahlfeldite ((Ni,Co)[SeO3]·2H2O) is a mineral of secondary origin. It is named after Friedrich Ahlfeld (1892–1982), a German-Bolivian mining engineer and geologist. Its type locality is Virgen de Surumi mine, Pakajake Canyon, Chayanta Province, Potosí Department, Bolivia.
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Ahlfeldite Localities Map
See where Ahlfeldite is found with a localities map, collecting zones, and geology context. Generate a sample map preview below.
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North ZoneCentral RidgeSouth Basin
Quick Facts
Physical Properties
- Color
- apple-green, brown, pink, yellowish
- Hardness (Mohs)
- 2 - 2.5
- Density
- 3.51 g/cm³
- Streak
- pale green, white
Chemical Properties
- Chemical Formula
- Ni(SeO3) · 2H2O May contain minor Co.
- Elements
- H, Ni, O, Se
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