Quartz vein and very dense veinlets stockwerk in silicified leptynites, near leucogranites.
Three mineralization stages :
1) Pneumatolytic: Quartz and orthoclase
2) Hypothermal: Quartz, scheelite, arsenopyrite, pyrrhotite, molybdenite, gustavite, vikingite, heyrovskyite, eskimoite, gold, galena
3) Late stage, epithermal: pyrite, marcasite, chalcopyrite, cosalite, gustavite II, bismuth, tetrahedrite
References
- Y. Moëlo et al. (1987): "Homologues de la lillianite (gustavite, vikingite, heyrovskyite riche en Ag et Bi, ...) de l'indice à W-As-(Pb, Bi, Ag) de la Roche-Balue (Loire-Atlantique, France)". Bull. Minéral., 110, 43-64.
Mineral List
24 entries listed. 24 valid minerals.
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