Locality Couard pass, Grandes Rousses massif, Oisans, Alps
Country France
Region Europe
Species Quartz
Size (cm) 10.5 x 8.7 x 7.6
Size Large Cabinet (10cm - 20cm)
Here is a 'jaw' of slightly smoky faden quartz from an uncommon locality in the Grande Rousses massif: the Couard pass. Notice the textbook preferential dissolution pattern on some faces of the quartz, revealing the internal Dauphiné-law twinning of the crystals.A very good locality specimen from Oisans.