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Rock Collecting (Let's-Read-and-Find-Out Science)
Rock Collecting - Let's-Read-and-Find-Out Science Author:Holly Keller (Illustrator), Roma Gans Rock collecting is easy and fun. You can find rocks at the park, in the woods, at the beach, or in your own backyard. Some rocks are soft such as talc. Others are hard, such as diamonds. Some have shiny crystals in them. Others are milky white or brown or black or even pink.