Pyrite mine, Aproz, Sion (Sitten), Wallis (Valais), Switzerland

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(Mine de pyrite, Aproz, Sion (Sitten), Valais (Wallis), Suisse (Schweiz; Svizzera))

Pyrite impregnations in sandstones adjacent to an anthracite seam, worked for sulphuric acid production from 1917 to 1919.

Mineral List:

'Coal
var: Anthracite'
Epsomite

Melanterite
Pickeringite

Pyrite
Siderotil

6 entries listed. 5 valid minerals.

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