"VWR"

Gray to tan clastic rock made of silt sized particles.

Breccia is a sedimentary rock made up of angular rock fragments.

Bituminous rich black shale for hands-on investigations.

Carbonate rock formed by the precipitation from water.

Pegmatite is igneous rock similar to granite but with larger crystals.

Obsidian is hard black colored, volcanic glass.

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

Quartzite is hard, non-foliated rock formed from metamorphosed quartz sandstones.

Pink Gneiss is foliated pink and black bands of biotite.

Slaty metamorphic rock containing hematite giving it its red color.

Gray metamorphosed shale showing "slaty cleavage".

Gray to white metamorphosed carbonate rock.

Soapstone is a talc-schist primarily composed of talc.

Talc is the softest know mineral with a moh's hardness of 1, and composed of clay.

Fluorite is Green Halide mineral with moh's hardness 4.

Hornblende is a dark amphibole group mineral, perfect for teaching Bowen's reaction series.