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NAGRA bore, Kaisten, Laufenburg, Aargau, Switzerland

NAGRA-Bohrung, Kaisten, Laufenburg, Aargau, Schweiz (Suisse; Svizzera)

Several boreholes of the NAGRA revealed zoned reduction coronas with roscoelite and ore minerals. One of these boreholes was near Kaisten. Red bed deposits in the Rotliegendes (Permian) of northern Switzerland were encountered at a depth of around 200 m. At lower depths, fossil-rich triassic dolomites were met. Another reduction zone was encountered in a cleft in a tectonically stressed lamprophyre at a depth of 352 m.

Apart from the minerals listed, the studies revealed also U minerals, Ni-Co arsenides, Cu sulphides and Cu arsenides.

Mineral List

Altaite
Bismuth
Cattierite
Chalcopyrite
Clausthalite
Coffinite
Copper
Crookesite
Dolomite
Froodite
Galena
Gold
Marcasite
Montroseite
Nickelskutterudite
Pyrite
var: Bravoite
Rammelsbergite
Roscoelite
Silver
Stromeyerite
'Tennantite-Tetrahedrite Series'


22 entries listed. 20 valid minerals.

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References

- Stalder, H. A., Wagner, A., Graeser, S. und Stuker, P. (1998): Mineralienlexikon der Schweiz. Wepf Verlag, Basel, 579 pp.

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