Fig. 6From: Geology along the Bedretto tunnel: kinematic and geochronological constraints on the evolution of the Gotthard Massif (Central Alps)Photographs of cut and wetted hand specimens taken from the Rotondo granite with macroscopically recognizable quartz (light reddish gray), plagioclase (light greenish), alkali feldspar (white), and biotite (black). a Equigranular variety (RG1). b Porphyritic variety (RG2)Back to article page