Igneous rocks are rocks derived from the cooling of magma, molten material originating from the upper Mantle/lower crust. Igneous rocks are classified by their texture and their composition. Rocks ' textures range from fine-grained (extrusive/volcanic) or coarse-grained (intrusive/plutonic). Compositions range from silica-rich (felsic) to silica-poor (mafic). Click HERE to download

Geology Kitchen #11 - Igneous Rocks

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Devin takes a look at a few of the methods of mineral formation    Click HERE to download

Geology Kitchen #14 - Mineral Formation Methods

Feldspars are the second most common group of minerals on Earth.  The are important contributors to soils as they weather relatively easily to form clays.  Potassium, Sodium and Calcium are the most common elements in Feldspars passed on to plants and animals, and are all elements critical to human life. Click HERE to download

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Geology Kitchen #11 - Igneous Rocks

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