Nades, Vichy, Allier, Auvergne-Rhône-Alpes, France

Berthierite crystals on quartz. SEM-EDS analysed at Laboratoire "Magmas et Volcans - Université de Clermont-Ferrand" by Pascal Chollet & Yannick Vessely. Photo & collection Vessely.

© y.vessely

Berthierite crystals sprinkled with small sulfur crystals on quartz. SEM-EDS analysed at Laboratoire "Magmas et Volcans - Université de Clermont-Ferrand" by Pascal Chollet & Yannick Vessely. Photo & collection Vessely.

© y.vessely

Berthierite crystals sprinkled with small sulfur crystals on quartz. SEM-EDS analysed at Laboratoire "Magmas et Volcans - Université de Clermont-Ferrand" by Pascal Chollet & Yannick Vessely. Photo & collection Vessely.

© y.vessely

Berthierite crystals on quartz. SEM-EDS analysed at Laboratoire "Magmas et Volcans - Université de Clermont-Ferrand" by Pascal Chollet & Yannick Vessely. Photo & collection Vessely.

© y.vessely

FOV 1,8 mm; Chris Auer photo and collection, self collected in 2009

© AC

Matrix is quartz with fine grained stibnite; Polished slab of F.Bernhard-Graz, sample size 10x6,6 cm. Chris Auer photo and collection, self collected in 2009.

© AC

Berthierite crysrals on quartz. SEM-EDS analysed at Laboratoire "Magmas et Volcans - Université de Clermont-Ferrand" by Pascal Chollet & Yannick Vessely. Photo & collection Vessely.

© y.vessely

Matrix is quartz with fine grained stibnite; Polished slab of F.Bernhard-Graz, detailed size 3,5x3,0 cm. Chris Auer photo and collection, self collected in 2009.

© AC

Black berthierite on quartz Photo & collection Vessely

© y.vessely

Sulphur crystal placed on a grey berthierite and berthierite crystals on quartz. Photo & collection Vessely.

© y.vessely

The “Nades Mines d’Or” gold mine general view, in 1911. Vintage picture postcard, photographer F. Gauvin, St. Eloy-les-Mine. G. Grundmann collection.

© F. Gauvin, St. Eloy-les-Mine.