Students explore texture, grain size, mineral composition, and foliation as they work to uncover the identity of rock samples from the three major groups. The set is housed in a compartmented collection box and comes with a study guide.Contents:24 unnumbered samples, 1″ x 1″ magnifier; acid bottle; numbering kitRocks:Igneous:andesite, basalt, diorite, gabbro, granite, obsidian, pumice, rhyoliteSedimentarycoal (bituminous), conglomerate, dolomite, limestone (2) sandstone, shale, siltstone Metamorphic:amphibolite, coal (anthracite), gneiss, marble, quartzite, schist, slate, soapstone
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