One of the ways my dad and I bond: nerd out identifying rocks and minerals he finds at Fort Knox.
Types of Rocks Sorting Cards-These beautiful cards make learning about types of rocks fun and easy! This PDF file includes: 6 pictures each in all) for all three rock categories: igneous, metamorphic, and sedimentary A full-page poster explaining
The Mohs scale of mineral hardness characterizes the scratch resistance of various minerals through the ability of a harder material to scratch a softer material. It was created in 1812 by the German geologist and mineralogist Friedrich Mohs