We use this all the time and the children love it! With gorgeous color pictures, it's only 64 pages and easy to refer to. It's not really "pocket" sized, as the title suggests, at 7 and 1/2 inches, but that's not a problem "in the field." The larger pages are even easier to use and read! Each page generally helps identify two different types of rock, with the color photo, texture, color, occurrence, and uses. In a clever and simple labelling format, the type/category of each page's rock or mineral is printed vertically down the page edge: Sedimentary, Igneous, Metamorphic, Natural Elements & Alloys, Oxides, Halides, Borates, Silicates, Phosphates, Sulphates, Chromates. Great for both casual and serious outings by families, hikers, backpackers, campers, RV-er's, rockhounds, and gem collectors.
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