... When rocks melt, they mix, cool, and harden to form new igneous rock When rocks are worn down, the remains form new sedimentary rocks Under the right conditions, both igneous and sedimentary rocks ... in the rock Scientists group rocks by their color, texture, and minerals Rocks are also grouped by how they formed Igneous rock comes from a mixture of melted minerals and gases deep inside the ... silt, and clay Crops usually grow best in loam because it has the right amount of sand, silt, and clay Rocks, minerals, and soil are everywhere Without rocks, minerals, and soil, we wouldn’t...