"geo-logic"

Define and compare ways organisms have been preserved.

Samples of Minerals That Are Found in Rocks

Study the Formation of Different Igneous Rocks

Examine the Mineral Composition of Sedimentary Rocks

Give Your Students a Lesson in Economics as Well as Geology

Geometric Shapes and Structures of Crystalline Minerals.

Feldspar group; white to gray, sodium plagioclase cleavages; some faces may show twinning.

Specimens to supplement the most widely-used college lab manual for physical geology.