Grades 5-12.

Comprehensive sample kit of 24 rock types will help students distinguish important rock characteristics. Kit contains 15 pieces each of the following: amphibolite, andesite, dark/fine basalt, vesticular basalt, coarse gabbro, coarse-grained gneiss, coarse granite, fine-grained granite, fine-grained limestone, fine-grained marble, metamorphic quartzite, obsidian, phyllite, porphyry, pumice, quartz sandstone, rhyolite, schist, shale, and slate. Also includes 100 cc of crushed granite, 30 pieces of halite, 5 pounds of limestone chips, one pound each of soil horizon A and soil horizon B, storage containers and Teacher's Guide.