Pretty Rocks (IMAGE) Penn State Caption This is a look at the foliated microstructure at the microscale: talc lamellae (bright coloRs) and calcite veins (white-grey). Credit Cristiano Collettini, Universita degli Studi di Perugia, Italy Usage Restrictions Non commercial Use only License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.