Geoscience How Soils are Formed Set includes a sampling of rocks and minerals that break down to become the major components for soils and samples of actual soils demonstrating texture and composition Collection includes 10 rock and mineral specimens and 5 soil samples for a total of 15 specimens Features . Scott Resources How Soils Are Formed Collection. Set of 15 Specifications . Country of Origin United States. Allergens Contains No Allergens