CRYSTAL STRUCTURE
A Crystal has straight edges, flat sides, and regular angles. The 6 crystal systems are:
1. Halite = Cubic
2. Wulfenite = Tetragonal
3. Corundum = Hexagonal
4. Topaz = Orthorhombic
5. Gymsum = Monoclinic
6. Albite = Triclinic
http://2.bp.blogspot.com/_8cpobi6sMJY/TI5VzcdcdvI/AAAAAAAAACU/gIGGYMHsTKU/s1600/Special+Crystals+button.gif
1. Halite = Cubic
2. Wulfenite = Tetragonal
3. Corundum = Hexagonal
4. Topaz = Orthorhombic
5. Gymsum = Monoclinic
6. Albite = Triclinic
http://2.bp.blogspot.com/_8cpobi6sMJY/TI5VzcdcdvI/AAAAAAAAACU/gIGGYMHsTKU/s1600/Special+Crystals+button.gif