A true survey set, it contains 21 key specimens from across the U.S. The locality is identified for each. Size 7″L X 3 1/2″W X 3/4″H.Contents: Rocks: basalt, gneiss, granite, limestone, marble, obsidian, sandstone, shale, slate; Fossils: shark’s tooth, snail shell, trilobite; Minerals: copper, feldspar, galena; Gemstones: alabaster, beryl, chrysocolla, quartz, rose quartz, turquoise.
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