Igneous Rocks

These are the rocks formed from cooling magma and lava that I will take to Chengdu. Their mass is 3.3 kg. As Marie Bippus would advise you "read them like a book". The rock names are obsidian, scoria, pumice, basalt, andesite, rhyolite, gabbro, diorite, and granite. The gabbros came from the train tracks near “The Strip” in Pittsburg, the obsidian came from Parks, AZ, and the pumice came from Los Conchas beach in Puerto Penasco, Mexico