1. Crystal structure is the geometric arrangement of the atoms of a mineral. True False

2. Crystals are usually recognized by their natural flat surfaces called _______. plates facets faces tables

3. Crystals can be extremely tiny or larger than a washing machine. True False

4. All crystals belong to one of six systems of symmetry. One system, the Hexagonal, has two divisions. It also differs from the other five by the number of axes. How many axes does it have? 2 5 3 4

5. Where can gem quality crystals be found? pegmatic dike all of these gravel beds marble

6. All crystals are transparent or translucent. True False

7. The correct term for the process of crystal enlargement is __________. growth multiplication gestation expansion

8. Beryl crystals produce both emeralds and aquamarines. True False

9. Rutile incorporated in corundum crystals produces: quartz worthless scrap stars commercial abrasive

10. A doubly terminated quartz crystal found in New York State is called a ________________ diamond. Answer: (One Word - 8 letters, starts with H)