Igneous Rocks

igneous rock  Basalt: the most common volcanic rock on Earth Composed of essential calcic plagioclase and pyroxene, sometimes with olivine, feldspathoids or interstitial Granite Granites are coarse-grained intrusive igneous rocks made of two different kinds of feldspar , together with

Three Types of Rock Part of Hall of Planet Earth There are three kinds of rock: igneous, sedimentary, and metamorphic Igneous rocks form when molten rock ( Extrusive igneous rocks Extrusive igneous rocks are formed at the Earth's surface as a result of the partial melting of rocks within the mantle and crust The

EISCO 12PK Raw Obsidian, Igneous Rock Specimen - Approx 1- Geologist Selected & Hand Processed - Great for Science Classrooms Only 12 left in stock Granite This is a hard igneous rock made up of clearly visible crystals of various minerals Granite looks good when it is polished and because it is also a