Ahlfeldite - Free definitions by Babylon

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Ahlfeldite ((Ni,Co)[SeO3]·2H2O) is a mineral of secondary origin. It's named after Friedrich Ahlfeld (1892–1982), a German-Bolivian mining engineer and geologist. Its type locality is Virgen de Surumi mine, Pakajake Canyon, Chayanta ProvincePotosí DepartmentBolivia.

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Mineralogy Database Dictionary

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General Information:
 Chemical Formula:
(Molecular Weight = 221.74 gm)
Cobalt 6.64 % Co
Nickel 19.85 % Ni
Hydrogen 1.82 % 
Selenium 35.61 % Se
Oxygen 36.08 % 
 Empirical Formula:
TL: Bolivia, Potos¡, Colquechaca
Physical Properties:
[110] Distinct, [103] Distinct
pink brown, apple green, or red.
2-2.5 - Gypsum-Finger Nail
Vitreous (Glassy)
light green
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