Click on the underlined links in the tables below to obtain more information about the igneous rock, texture or mineral, including some specimen pictures.
| andesite | gabbro | obsidian | rhyolite |
| basalt | granite | pumice | tuff |
| diorite |
| alkalai feldspar | biotite | plagioclase feldspar | quartz |
| amphibole | olivine | pyroxene |
This Web document was created in 2002 by Vince Cronin.
Return to the Geo 100 Laboratory Home Page.
