Quartz, SiO2, 6.5 cm
Smoky quartz, right-handed Dauphiné-law twins (macle du Dauphiné)
Wasenhorn, Simplon Pass, Valais (Wallis), Switzerland
Photo and coll. P. Perroud
(now in NHM Geneva).
A T H E N A |
Quartz, SiO2, 6.5 cm
Smoky quartz, right-handed Dauphiné-law twins (macle du Dauphiné)
Wasenhorn, Simplon Pass, Valais (Wallis), Switzerland
Photo and coll. P. Perroud
(now in NHM Geneva).