2 Mineral - definition Naturally occurring Inorganic Solid Specific chemical compositionDefinite crystalline structure
3 Mineral SystemsIf space is not restricted, a mineral will exhibit a crystal pattern with a definite number of sides and specific angles.
4 Mineral Identification Hardness – the ability to resist scratching; ranges from 1 (softest) to 10 (hardest)
5 Mineral Identification Streak_________ – the color of the powdered form of a mineral
6 Mineral Identification _________– the way a mineral reflects lightIn our class we will use three terms:_______– not reflecting light well_______ – reflects like water or glass________– reflects like a metalLusterdullglassymetallic
7 Mineral Identification Cleavage (flat surfaces) or Fracture (no flat surfaces) – the way a mineral __________breaks
8 Review color luster texture streak hardness cleavage fracture specific gravity