Tsehay Mewcha, Wegeltena (Wegel Tena), Delanta, Welo (Wello; Wollo), Afar Province, Ethiopia
List of minerals arranged by Strunz 10th Edition classification
|Group 4 - Oxides and Hydroxides|
|Opal||4.DA.10||SiO2 · nH2O|
1 entry listed. 1 valid mineral.
- Schäfer, K. (2012): Feuer im Wasser: Die Vorkommen von neuartigem Edelopal in Äthiopien. Lapis 37 (2), 13-16 (in German). [with explanation of unusual behaviour during cutting and drying]
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