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These guides identify the rocks and minerals included in the Deeper and Deeper and Mining Matters II – The Earth's Crust kits. Complete with photographs, the An interactive reference guide to rocks, minerals, and gemstones. Interactive guide to hundreds of rocks and minerals. Rock and Mineral Kits Rock, Mineral and Fossil Collections. Specimens for personal or classroom use. Hardness Picks. Hardness Picks - Mohs hardness testing 5 Feb 2012 3 Feb 2019 This master guide with annotated pictures will help you identify rock-forming, accessory, and rare or notable minerals. Free printable rock and mineral identification guide.This is an excellent field guide to most common rocks and minerals. Full-color illustrations and easy-to-read text cover metallic, nonmetallic, gem, and Biotite Biotite is a member of the mica branch of the silicate mineral group. It is common as a rock-forming mineral and is present in all three rock types: igneous, Discover the best Rock & Mineral Field Guides in Best Sellers. Find the top 100 most popular items in Amazon Books Best Sellers.