Suppose that you gather more information about each sample, beyond a picture. (Obsidian and Gneiss, Granite and Soapstone, and Conquina Limestone and Pumice) You obtain numerical data about the rocks,(Obsidian and Gneiss, Granite and Soapstone, and Conquina Limestone and Pumice) and you learn more about their properties. What other attributes could you use to sort the rocks? Use what you know about minerals to help you.