United Scientific Supplies UNROCSET20 Rock Collection, 20 Specimens

Description

Features:

• This Collection contains 20 Types of Basic Rocks Specimens of Igneous, Sedimentary & Metamorphic Rocks Types.
• The Rock Specimens include Basalt, Gabbro, Granite, Obsidian, Pegmatite, Pumice, Anthracite, Gneiss, Marble, Quartzite, Serpentine, Slate, Chalk Lumps, Conglomerate, Diatomite, Flint, Lime Stone, Rock Salt,
• Sand Stone and Shale. Average sizes are 2 cm X 3 cm X 1.5 cm