Igneous rocks (Igneous Rock).Caused by the magma under the Earth's crust insert push up and then crystallize as minerals and cool down a stone example at the Earth's surface. Divided into two types, namelyIgneous rock (Intrusive Igneous Rock) intrusion caused by the cooling of magma slowly under Earth's crust. There is a large mineral crystals (> 1 mm), such as a granite stone (Granite), all Wright (Diorite) rocks gabbro (Gabbro).Igneous rocks (Igneous Rock Extruisive) output or volcanic rock (Volcanic Rock) caused a rapid cool down of magma that push the output samples off the Earth's surface as lava (Lava), mineral crystals or small crystals not far (Basalt) basalt rocks (Andesite) Andes rock Rio Lite (Rhyolite).
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