Chapter 1(Part 4)

IV. Minerals

   A.Properties of minerals

      1. Crystal Form

      2.Luster

      3.Color

      4.Streak

      5.Hardness

      6.Cleavage

      7.Fracture 

   B.Rock forming minerals

      1.Elements

         a.Oxygen

         b.silicon

         c.aluminum

         d.iron

         e.calcium 

         f.Sodium 

         g.Potassium

         h.Magnesium 

      2.Most abundant atoms in Earth's crust

         a.Oxygen (46.6% by weight)

         b.Silicon (27.7% by weight)