Quartz (Var: Smoky Quartz), K Feldspar, Albite
Cala Francese Quarries, La Maddalena Island, La Maddalena, Sassari Province, Sardinia, Italy
Oriented crystals of smoky quartz on K feldspar with albite (6,5 x 4,5 cm) - Cala Francese Quarries, La Maddalena, Olbia-Tempio Pausania Province, Sardinia, Italy - coll. and photo Antonio Gamboni.
© Antonio Gamboni