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Name ____________________ Mineral Study Guide Go to http://volcano.und.nodak.edu/vwdocs/vwlessons/lessons/Minerals/Minerals1.html and work your way through the tutorial to help you to find the answers to the study guide questions. Define: Mineral Crystal Amorphous solids What is important to know about quartz that is found in Asia and quartz that is found in the US? How many naturally occurring elements are on earth? How many elements make up over 98% of the Earth’s crust? List the names of those elements. How many minerals are found on Earth? How many of them make up the majority of the rocks on Earth? How do scientists classify/group minerals? What is a property? What are the five main properties that we’ll be using to identify minerals? What is luster? What are the two many ways to categorize a mineral/s luster? Metallic minerals shine like ______. Define each of these non-metallic lusters Pearly luster Greasy luster Earthy luster Vitreous luster What is the easiest property to see? Why is it not the best way to identify a mineral? Why is quartz a good example of this problem? Define streak What did Frederick Mohs invent? What is the softest mineral? What is the hardest mineral? List four ways to scratch a mineral to help determine its hardness. What is a cleavage plane? What mineral has perfect cleavage? What is fracture? What type of fracture does obsidian have? What makes a mineral magnetic? What did ancient sailors use to make compasses? Why?