Minerals are substances of definite chemical composition which occur naturally in the earth. In this kit, there are 15 specimens included. The minerals are Calcite, Feldspar, Fluorite, Garnet, Gypsum, Olivine, Talc, Mica, Sulfur and Quartz. The rocks are Coal, Granite, Limestone, Shale and Siltstone.
Plastic box measures - 4.75" x 3.5"