Quistiav (or Questiave), Guern, Pontivy, Morbihan, Bretagne, France
Quartz-pitchblende vein in granite, near Quistiav hamlet, WSW of Guern.
Two generations of quartz :
- Early palissadic quartz, smokey or hematized quartz
- Cryptocrystalline quartz with fragments of early pitchblende and spherolites of secondary pitchblende. This quartz contains the sulphide mineralization
References
-(1) Pierrot, R., Chauris, L. et al. (1980) "Inventaire minéralogique de la France N°9" "Morbihan", éditions de BRGM, Orléans, pp 79-81
-(2) Chauris, L., LE BAIL, F. and GUIGUES, J.(1970): "Minéraux de Basse-Bretagne", Editions de la SEPNB, revue Pen ar Bed, Brest, pp 33-34
Mineral List
55 entries listed. 51 valid minerals.
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