02 - Studying the crystal form of galena 03 - Rock salt really tastes like salt 04 - Learning how to identify minerals based on their hardness 05 - Learning about mineral cleavage and habit 06 - Tasting the halite 07 - Writing with graphite is fun 10 - Clastic sedimentary rocks 12 - What a giant scoria 16 - Rock Lab 009 17 - Looking at a breccia