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Minerals Notes A MINERAL has the following 5 characteristics: 1. ____________________________ Explain: __________________________________ 2. ____________________________ ___________________________________ 3. ____________________________ ___________________________________ 4. ____________________________ ___________________________________ 5. ____________________________ ___________________________________ The most common minerals in the Earth’s crust are (Look in ESRT!) 1. ______________________ 2.________________________3._________________ Describe and give an example of the following physical properties of minerals: PROPERTY 1. Color: 2. Streak: 3. Luster: 4. Hardness: 5. Density: 6. Cleavage 7. Fracture: 8. Crystal Structure: EXAMPLE All of a mineral’s physical and chemical properties are caused by ___________________________________________________________________________ Some minerals have special properties such as: 1. 2. 3. The physical properties can be used to identify minerals. Which physical property is the least reliable and why? ____________________________________________________________________________ Most common minerals belong to the SILICATE family, and are made up various arrangements of the silicon-oxygen tetrahedron, a 4-sided unit of one silicon atom surrounded by 4 oxygen atoms. Its looks like this: Three example of silicate minerals are 1.__________________ 2. _________________ 3. ____________ Two examples of non-silicate minerals are 1.____________________ 2._______________________ Diamond and Graphite are minerals with the same chemical composition ___________ . Diamond is very hard and colorless with a non-metallic luster. Graphite is very soft and grey with a metallic luster. Why do these two minerals have such different physical properties? ________________________________________________________________________________ ________________________________________________________________________________ An example of something that is NOT a mineral is _______________________________________ because _______________________________________________. Minerals have many important uses in our lives, for example _________________ is used for