(Radau-Oker-Stollen, Okertal, Bad Harzburg, Harz, Niedersachsen, Deutschland)
A water tunnel joining the Radau reservoir with the Oker valley. During its construction in the late 1970's, several mineralized zones in clay schists, hornfelses, diabase, gabbro and granite were cut. Today inaccessible.
Located about 7.5 km SW of Bad Harzburg.
Ref.: Emser Hefte 1988(2), 33-50
Mineral List:32 entries listed. 29 valid minerals.
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