20 Specimen Basic Rock Collection Set

A high quality boxed set, consisting of 20 mixed igneous, metamorphic and sedimentary rocks. This set includes: 1) Granite 2) Gabbro 3) Obsidian 4) Pumice 5) Basalt 6) Metaquartzite 7) White Marble 8) Slate 9) Mica Schist 10) Gneiss 11) Conglomerate 12) Breccia 13) Permian Sandstone 14) Carboniferous Sandstone 15) Shale 16) Oolitic Limestone 17) Chalk 18) Crinoidal Limestone 19) Bituminous Coal 20) Flint The set measures 30 x 24 x 5cm, and features a printed insert inside the lid, detailing each specimen.