Mar 02, 2017 · Many different things, including mineral deposits and animal waste can colour snow. One of the most striking is Penguin poo, coloured by the abundant carotenoids in the birds’ krill diet. Get out of the classroom Study geology in the field, from local streams and rock outcrops to destinations such as Death Valley, the Grand Canyon, and Canyonlands National Parks.
Interactive guide to hundreds of rocks and minerals. Some important minerals are not here yet. We are constantly working on expanding this list.