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24 identical sets, each with: a basic rock card with 18 rock specimens, a mineral card with 10 specimens, and a 3X and 6X plastic lens glass. Rocks include igneous, metamorphic, and sedimentary. Both minerals and rocks come with a short explanation of the differences in the formations and types. Purchase with 2005 Title IIA Funds administered by the Board of Regents, State of Iowa and donated by Clarke College, Dubuque, Iowa. | |