(Eisengrube, Herznach, Aargau, Schweiz (Suisse; Svizzera))
Iron mine. Closed 1967. Oolithic iron ore.
Ref.:
- Stoecklin, D. and Eichin, R. (1978). "Minéraux de la mine de fer de Herznach (AG)." Le Cristallier Suisse 4(12), 493-536.
Mineral List:9 entries listed. 7 valid minerals.
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