Luster - How the mineral reflects light., Hardness - Whether an item scratches or is scratched by another item., Color - Not a reliable property for identification because it varies., Streak - The color of a mineral's powder., Mineral - An inorganic, naturally occurring solid with a crystal structure and set chemical composition., MOH's Hardness Scale - A 1-10 scale to rank the hardness of minerals. , Chemical Composition - The elements that make the mineral., Crystal Structure - The arrangement of the mineral's particles., Solid - The particles cannot move freely., Inorganic - Not living or from living things., Naturally Occurring - Found in nature; not man made. , Density - Mass per volume., Cleavage - Breaks in a pattern with flat surfaces. , Fracture - Breaks irregularly. , Rock - Made of various minerals, may have organic matter, naturally occurring, solid, with no set crystal structure. ,

Minerals

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