Obsidian Rock - Everything you need Know.
We know three main classes of rocks, sedimentary, igneous, and metamorphic. In Limestone article, we learned how sedimentation occurs, and the formation of sedimentary rocks takes place. Today, we are going to know Obsidian rock, which falls in the main class igneous rocks. We know igneous rocks have two basic types: 1. Intrusive Igneous Rocks When molten lava/magma is cooling slowly below the surface of the earth and forms large crystals in the rocks they known as intrusive igneous rocks . For examples- Diorite Gabbro Granite Pegmatite 2 – Extrusive Igneous Rocks When molten magma is cooling rapidly onto the surface of the earth and forms small crystals in the rocks they known as extrusive igneous rocks. For examples- Obsidian Andesite Basalt Dacite Pumice Rhyolite Scoria Fire Opal What Is Obsidian Rock? If you strive to know the obsidian meaning, go ahead in this section. Obsidian is a class of igneous rocks, w...