Rhyolite Explosive Lava
Rhyolite Explosive Lava. Rhyolite is a fine-grained igneous rock with a high silica content. Its pale color is usually grey or pink. All rocks are made of minerals. The mineral content of this lava is similar to granite, obsidian, pumice and tuff. Formed from granite magmas that partially cooled as they rose to the surface of the earth, all of ...