2. By Sonia E. Olivares

3. How do crystals break…  A. Cleavage  B. Atoms arrangement  Many facets  Several surfaces  Thin sheets  A. Cleavage  B. Atoms arrangement  Many facets  Several surfaces  Thin sheets

4. Let’s make a crystal.

5. The color of crystals  Depends on:  Atoms  Light Some are: Green Beryl Rose Quartz Amethyst  Depends on:  Atoms  Light Some are: Green Beryl Rose Quartz Amethyst

6.  Atoms come together to form a pattern that repeats.  Crystals come in seven different shapes. 1.Cubic iron 2.Monoclinic 3. Triclinic 4. Barite 5. Tetragonal 6. Hexagonal 7. Triagonal  Atoms come together to form a pattern that repeats.  Crystals come in seven different shapes. 1.Cubic iron 2.Monoclinic 3. Triclinic 4. Barite 5. Tetragonal 6. Hexagonal 7. Triagonal HOW DO CRYSTALS FORM? HOW DO CRYSTALS FORM?

7. HOW DO CRYSTALS GROW? HOW DO CRYSTALS GROW?  In cavities between rocks  When cavities become filled the crystal has grown as much as it can.  In cavities between rocks  When cavities become filled the crystal has grown as much as it can.

8. The fascination of crystals… They spark and attract with their beautiful light.  They come with interesting shapes and colors  Collecting them can be an exciting and challenging experience. They spark and attract with their beautiful light.  They come with interesting shapes and colors  Collecting them can be an exciting and challenging experience.

9. What makes up a crystal??  Atoms are building blocks of crystals.  Even the smallest crystal (salt)is made up of millions of atoms.  For every type of crystal there is a different combination of atoms.  Salt for example is composed of sodium and chlorine.