Igneous Rocks

Igneous Rocks igneous rock Igneous rocks form when magma, or melted rock from inside the Earth, cools and hardens They can form above ground when magma erupts from a volcano as lava red rock slot A rock of intermediate composition is diorite if it's course-grained, and andesite if it's fine-grained A mafic rock is gabbro if it's course-grained, and

red rock slot as accessory minerals mica hornblende accessory mineral mineral found in a rock in tiny quantities 19 20 Color Igneous rocks come in many colors A

blackrock คืออะไร EISCO 12PK Raw Obsidian, Igneous Rock Specimen - Approx 1- Geologist Selected & Hand Processed - Great for Science Classrooms Only 12 left in stock Granite Granites are coarse-grained intrusive igneous rocks made of two different kinds of feldspar , together with