Glossary of Chapter 3 Rocks and Minerals
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- What physical properties are used to identify a mineral?
- Color, streak, luster, hardness, cleavage, fracture, magnitism, ability to bend light rays, fluorescence, taste, crystal shape and acid reactions.
- What are the physical properties of a mineral largely due to?
- Their internal arrangment of atoms.
- What is streak?
- Streak is the color of a mineral in its powder form.
- What are the two types of luster?
- Matallic and Non-Matallic
- Name the 10 hardnesses, starting with the hardest.
- Diamond, Corundum, Topaz, Quartz, Feldspar, Apatite, Fluorite, Calcite, Gypsum, and Talc.
- What is a mineral?
- A mineral is a naturally occuring, solid, inorganic substance that has definate chemical composition and molecular structure.
- What is the hardness scale called?
- Moh's Scale of Hardnesses
- What are the types of non-matallic luster?
- earthy, dull, glassy, pearly, greasy, etc.
- What is cleavage?
- Cleavage is the tendancy of a mineral to split along one or more smooth, flat surfaces or planes.
- What is fracture?
- Fracture is when minerals dont show cleavage, and break.
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