An impressionist mountain landscape? No! The 10x20 mm surface of a pebble from the Saaser Vispa, #Switzerland: #Allalin metagabbro, #eclogite facies. White: saussurite pseudomorph of plagioclase, green: omphacite, red: garnet, black rims: Mg-chloritoide. #geology #Alps Colours enhanced by moistening