mineral, A naturally occuring, inorganic solid that has a crystal structure and a definite chemical composition., inorganic, Th mineral can't form from materials that were once part of a living thing., crystal, A solid in which the atoms are arranged in a pattern that repeats again and again., streak, The color of a minerals powder., luster, The way a mineral reflects light from its surface., Mohs hardness scale, A scale ranking ten minerals from softest to hardest., cleavage, A mineral's ability to split easily along flat surfaces., fracture, The way a mineral looks when it breaks apart in an irregular way.

Chapter 3.1

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