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Minerals, Rocks, and Rock Cycle Test Study Guide This is not everything you need to know! It is a start to help guide your studying. Test is Wednesday, April 2. Who is Friedrich Mohs and what did he do? Explain process of crystal formation The size of a crystal depends upon what? (Why are some small while others are large?) Be able to recall the 5 characteristics of every mineral (definition of a mineral) Know the properties (~6 of them) used to identify one mineral from another (i.e. color, texture, etc.) Think Mineral ID Lab! What determines the texture of rocks? Igneous rocks – Know how many different types, where they form, and how they form. Even though two different igneous rocks may be made of the same minerals, why do they look different/have different names? Identify specific igneous rocks i.e. granite, obsidian, etc. Sedimentary rocks – Know how many different types, what they are made of, and how they form. Identify specific sedimentary rocks i.e. sandstone, shale, etc. Metamorphic rocks – Know how many different types, where they form, and how they form. Identify specific metamorphic rocks i.e. gneiss, quartzite, etc. Identify the parent rocks of certain metamorphic rocks o For example, gneiss is a metamorphic rock formed from granite. Granite is the parent (original) rock. What drives the rock cycle? (without it, the cycle wouldn’t exist) Be able to take a rock and explain how it changes after going through several processes, in order to turn into a different type of rock.