Themes of the Day:

• Miller Indices
• Crystal Zones and Directions
• Crystal Forms
• Crystal Habits

Miller Indices

• Crystal Faces in relation to Lattice Nodes
• The Miller Index
• More Miller Indices
• Miller Indices in the Hexagonal System
• Miller-Bravais Indices for the Hexagonal System
• What, you haven't had enough Miller Indices yet?
• Flash Animations of Miller Indices

Crystal Zones and Directions

• Crystallographic Directions
• Crystal Zones
• Repetition by Symmetry

Crystal Forms

• Isometric Forms
• Non-isometric Forms I
• Non-isometric Forms II
• Non-isometric Forms III
• Enantiomorphic Forms
• Positive and Negative Forms
• Triclinic Forms
• Monoclinic Forms
• Orthorhombic Forms
• Tetragonal Forms
• Hexagonal (trigonal) Forms
• Hexagonal (hexagonal) Forms
• Cubic Forms I
• Cubic Forms II
• Cubic Forms III
• Cubic Forms IV

Crystal Habit

• Euhedral, Subhedral, Anhedral
• Elongation vs. Thickness
• Patterns of Mineral Intergrowth
• Habits