rocksmins Igneous Rocks Collection for Education  (Multicolor)

Igneous rock forms through the cooling and solidification of magma or lava. Igneous rock may form with or without crystallization, either below the surface as intrusive (plutonic) rocks or on the surface as extrusive (volcanic) rocks. Collection of 15 Igneous Rocks This Collection contains 15 Types of Basic Rocks Specimens of Igneous Rocks Types. The Igneous Rock Specimens include Some of the following Andesite, Basalt, Diorite, Dolerite, Gabbro, Granite Black, Granite Porphyry, Granite Red, Granite White, Kimberlite, Obsidian Black, Obsidian Green, Pegmatite, Pumice, Rhyolite etc.