How to Use "igneous" with Example Sentences

1. Topaz occurs in the igneous rock rhyolite .
2. What he believed to be igneous , was in fact sedimentary .
3. Igneous rock forms when magma cools and solidifies .
4. Were large igneous provinces caused by mantle plumes ?
5. But must see the army and the people of igneous dynamite industry writtens guarantee .