Rock Set, rock formation 15 sample pieces

Rock Set, rock formation,introductory set of 15 specimens,igneous,sedimentary,and metamorphic rocks.

Igneous: Obsidian,Granite,Basalt,Scoria,Rhyolite

Sedimentary : Shale, Calcareous Tufa. Sandstone,Conglomerate,Limestone

Meatamorphic: Slate,Marble, Quartzite,Gneiss,Schist.