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Earth and Atmospheric Sciences
Earth's Structure and Processes
Mineralogy and Petrology
1. Introduction to Mineralogy
2. Crystallography
3. Mineral Chemistry
4. Physical Properties of Minerals
5. Optical Mineralogy
6. Systematic Mineralogy
7. Introduction to Petrology
8. Igneous Petrology
9. Sedimentary Petrology
10. Metamorphic Petrology
11. Petrogenesis and Plate Tectonics
Crystallography
The Crystalline State
Atomic Arrangement in Crystals
Three-Dimensional Periodicity
Atomic Packing Principles
Coordination Numbers
Unit Cells and Crystal Lattices
Types of Unit Cells
Primitive Cells
Body-Centered Cells
Face-Centered Cells
Base-Centered Cells
Lattice Parameters
Cell Dimensions
Axial Angles
Cell Volume Calculations
Bravais Lattices
Fourteen Lattice Types
Lattice Symbols and Notation
Miller Indices
Notation and Calculation
Intercept Method
Reciprocal Method
Index Determination
Applications in Crystallography
Crystal Face Identification
Cleavage Plane Notation
X-ray Diffraction Indexing
Crystal Symmetry
Symmetry Elements
Axes of Rotation
Two-fold Axes
Three-fold Axes
Four-fold Axes
Six-fold Axes
Planes of Symmetry
Mirror Planes
Glide Planes
Center of Symmetry
Inversion Centers
Centrosymmetric vs. Non-centrosymmetric
Rotoinversion Axes
Combined Rotation and Inversion
Notation and Identification
Symmetry Operations
Rotation Operations
Proper Rotations
Rotation Angles
Reflection Operations
Mirror Reflections
Symmetry Plane Operations
Inversion Operations
Point Inversion
Coordinate Transformations
Rotoinversion Operations
Combined Operations
Equivalent Operations
Point Groups
Classification of Point Groups
Thirty-Two Crystal Classes
Hermann-Mauguin Notation
Schoenflies Notation
Examples of Crystal Classes
Common Point Groups
Mineral Examples for Each Class
The Six Crystal Systems
Isometric System
Symmetry Features
High Symmetry Elements
Cubic Unit Cell
Common Minerals
Halite
Pyrite
Garnet
Fluorite
Tetragonal System
Symmetry Features
Four-fold Rotation Axis
Square Cross-Section
Common Minerals
Zircon
Cassiterite
Rutile
Orthorhombic System
Symmetry Features
Three Perpendicular Axes
Different Axial Lengths
Common Minerals
Olivine
Barite
Topaz
Hexagonal System
Symmetry Features
Six-fold or Three-fold Symmetry
Hexagonal Cross-Section
Common Minerals
Quartz
Calcite
Apatite
Monoclinic System
Symmetry Features
One Oblique Angle
Two-fold Symmetry
Common Minerals
Orthoclase
Gypsum
Augite
Triclinic System
Symmetry Features
Lowest Symmetry
All Angles Oblique
Common Minerals
Plagioclase
Kyanite
Axinite
Crystal Forms and Habits
Crystal Faces and Forms
Simple Forms
Combination Forms
Face Development Factors
Open vs. Closed Forms
Open Forms
Pinacoids
Prisms
Pyramids
Closed Forms
Cubes
Octahedra
Dodecahedra
Common Crystal Habits
Prismatic
Elongated Crystals
Length-to-Width Ratios
Tabular
Flattened Crystals
Plate-like Appearance
Acicular
Needle-like Crystals
High Aspect Ratios
Bladed
Knife-like Crystals
Sharp Edges
Fibrous
Thread-like Crystals
Parallel Arrangements
Dendritic
Tree-like Branching
Skeletal Growth
Massive
No Distinct Crystal Form
Granular Aggregates
Twinning in Crystals
Types of Twinning
Contact Twinning
Composition Plane
Simple Contact Twins
Penetration Twinning
Interpenetrating Crystals
Complex Arrangements
Multiple Twinning
Repeated Twinning
Polysynthetic Twins
Laws of Twinning
Twin Axis
Twin Plane
Composition Surface
Identification of Twinning
Hand Sample Recognition
Re-entrant Angles
Striations
Compositional Differences
Thin Section Recognition
Optical Discontinuities
Extinction Patterns
Significance in Mineral Identification
Diagnostic Features
Structural Implications
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1. Introduction to Mineralogy
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3. Mineral Chemistry