This 23-page slideshow explains what intrusive and extrusive igneous rocks are and the characteristics of their structures. Each type of structure is accompanied by one or more images. (Website for Mining Engineering students at Mehran...

If you need a technical summary of igneous rock classification, then this resource is worth checking out. It has several different diagrams to help you visualize the classification process.

Learn about the different types of igneous rocks and how they are classified.

[Free Registration/Login may be required to access all resource tools.] Describes the features of intrusive and extrusive igneous rocks that cool slowly and rapidly, respectively.

This resource contains detailed summaries of eight different igneous minerals. It also has enlarged pictures of the minerals as they appear embedded in igneous rock.

What is igneous rock? How is it formed? What makes igneous rock different from sedimentary rock or metamorphic rock? This interactive OLogy card answers these and similar questions.

[Free Registration/Login may be required to access all resource tools.] Summarizes the key points about how intrusive and extrusive igneous rocks form. Includes a few questions to check for understanding.

[Free Registration/Login may be required to access all resource tools.] Presents igneous rocks, which form from magma, and the two types: dense, dark mafic and less dense, light felsic. Also covers Bowen's Reaction Series.

This resource provides a description of igneous rock, its origin and the types of rock that are formed from a volcanic eruption.

Review your understanding of the big ideas under the topic of igneous rocks.

A slideshow, a karaoke song to sing along to, and a short multiple-choice quiz on the topic of igneous rocks, how they are formed, and some different types.

Learn the basics of igneous rock formation.

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...

Rocks hold the history of the earth and the materials that will be used to build its future. This website holds a treasure of information regarding igneous, metamorphic and sedimentary rocks.

In this lesson, learners will be given a brief overview of the rock cycle. Students will then focus on igneous rocks and how they are formed. This lesson plan was created as a result of the Girls Engaged in Math and Science, GEMS Project...

This site explores the classification of igneous rocks. Content addresses classification based on color and texture, mineral composition, and chemical composition.

In this interactive tutorial you will learn about the types, forms, and hazards of volcanoes. The types of landform common to volcanic activity is discussed. Then, the landforms commonly resulting from intrusive igneous activity are...

Explains the difference between intrusive and extrusive igneous rocks and provides pictures and descriptions of common igneous rock types in each category.

[Free Registration/Login may be required to access all resource tools.] Presents the classifications of igneous rocks based on silica content.

A quick review of the basic concepts in igneous rock identification.

[Free Registration/Login may be required to access all resource tools.] How to classify igneous rocks.

[Free Registration/Login may be required to access all resource tools.] Determination of intrusive and extrusive igneous rocks.

[Free Registration/Login may be required to access all resource tools.] Factors that determine the composition of an igneous rock.

Learn about the make-up and causes of igneous rock.