Granite (Coarse grained igneous) - Slowly cooled magma, Marble (metamorphic) - Metamorphosed limestone, Obsidian (Glassy igneous) - Very rapidly cooled lava, Sandstone (fine grained sedimentary) - Fragments of other rocks and quartz, Quartzite (metamorphic) - Metamorphosed sandstone, Basalt (fine grained igneous) - Rapidly cooled lava, Limestone (sedimentary) - Fragments of shells and calcium carbonate, Slate (metamorphic) - Metamorposed mud,

Leaderboard

Visual style

Options

Switch template

Continue editing: ?