Английская Википедия:Ahlfeldite
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Ahlfeldite (Шаблон:Chem2) 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.
References
Шаблон:Selenites, selenates, tellurites, and tellurates