Mineral Weathering
http://courses.soil.ncsu.edu/resources/soil_classification_genesis/mineral_weathering/mineral_weathering.swf

Soil Science Department, North Carolina State University

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This annotated animation explains how chemical weathering affects the evolution of parent material from highly resistant primary minerals to both secondary minerals and minerals in solution. It illustrates how, over time, weathering changes both the elemental and the mineral composition of soil.

Subject: Geoscience:Geology:Mineralogy, Sedimentary Geology:Weathering
Theme: Teach the Earth:Course Topics:Sedimentary Geology, Mineralogy