Igneous Rock Questions |
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What is in magma that makes up a rock?
What are minerals in Igneous Rock?
Are all stones formed from igneous volcanic rocks?
What is obsidian rock used for?
Name four kinds of igneous rocks.
 What is in magma that makes up a rock?Magma is the term used for liquid rock which forms deep below the Earth’s surface. Magma can be composed of many different things such as silicates, alkalis, iron and magnesium. The composition of the magma will determine the type of rocks which it will eventually form.Back to Top  |
What are minerals in Igneous Rock?Many minerals can form in igneous rocks. Some of the most common are quartz, feldspars, micas, and olivine.Back to Top |
Are all stones formed from igneous volcanic rocks?No. Minerals form in various ways. Some form from magma, like igneous rocks, but others can form from precipitation or evaporation in ocean settings, or during metamorphism of another rock for example.Back to Top |
What is obsidian rock used for?In ancient times, obsidian was used to made crude knives and tools. Today, obsidian is used in the production of rock wool, knives and jewelry.Back to Top |
Name four kinds of igneous rocks.You can look through the “Igneous Rocks” link on the left side of our website and find the ones you like best!Back to Top |