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Tsehay Mewcha, Wegeltena (Wegel Tena), Delanta Woreda, South Wello (Welo; Wollo), Amhara Province, Ethiopia

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Detailed Mineral List:
Opal
Formula: SiO2 · nH2O
Reference: Schäfer, K. (2012): Feuer im Wasser: Die Vorkommen von neuartigem Edelopal in Äthiopien. Lapis 37 (2), 13-16
Photo: © Lopatkin Oleg. Opal from Tsehay Mewcha, Wegeltena, Delanta Woreda, South Wello, Amhara Province, Ethiopia


1 entry listed. 1 valid mineral.

References

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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