Mystery Rocks Revealed

You guys did a great job completing the Mystery Rock Lab.  Below is the list of what each sample was:

#1 - Obsidian (Igneous)

#2 - Shale (Sedimentary)

#3 - Quarzite (Metamorphic)

#4 - Rhyolite (Igneous)

#5 - Sandstone (Sedimentary)

#6 - Not a Rock! It was Fluorite (mineral)

#7 - Shist (Metamorphic)