"WardsSci000764"

Porphyritic igneous rock containing biotite, feldspar, and hornblende.

Pumice is light colored glassy rock that floats in water.

Conglomerate is a sedimentary rock made up rounded quartz pebbles.

Metamorphosed rock showing foliation and rich in hornblende.

Hemalite is a Massive, dense red to gray, classic example of iron ore.

Muscovite is a mica mineral cut to demonstrate basal cleavage.

Phyllite is a light-gray foliated rock formed from metamorphosed slate.

A textbook example of pure crystalline carbon which is extermely soft.

Massive white quartz with a moh's hardness 7.

Scoria is a dark-colored rock formed from lava with a high gas content.