James Madison University
James Madison University: Clastic Sedimentary Rock Classification
An upper-level explanation of clastic sedimentary rock classification. Charts, diagrams, and review questions are included. Be sure to click on the PDF Clastic Identification key.
James Madison University
James Madison University: Igneous Rock Classification
This site explores the classification of igneous rocks. Content addresses classification based on color and texture, mineral composition, and chemical composition.
James Madison University
Barrovian Metamorphism and Metamorphic Grade: Facies, Zones, and Index Minerals
Explains what Barrovian metamorphism is and the evolution of rocks as they are transformed by metamorphism. The process of burial, heat, and pressure that causes metamorphism is described. The concepts of metamorphic facies, grades,...
James Madison University
James Madison University: Keys to Igneous Rock Classification
Click for different identification keys for igneous rocks to help you classify them correctly. Includes various color/texture keys as well as classification charts. (NOTE: At the time of writing this, the PDF links were configured...
James Madison University
James Madison University: Mineral Hardness and Cleavage
An explanation of the Mohs Hardness scale is followed by illustrations of crystal structures and cleavage.
James Madison University
James Madison University: Mineral Luster
Mineral photos depicting metallic and non-metallic luster. Includes shiny, glassy, and earthy examples.
James Madison University
James Madison U.: Bowen's Reaction Series & Igneous Rock Forming Minerals
If you're interested in learning about the igneous rock-forming minerals in seeing multiple pictures of each sample, then this is your site. It also includes the chain that these minerals follow. Click on the PDF link for a printable...