|Data Value||dec. 2316:1 and 2316:3 and 2316:4|
Basalt is a dark colored stone similar to cobblestone that forms from volcanoes. When mined, it drops Basalt Cobblestone. All versions of Basalt are strong enough to withstand creeper and some TNT explosions.
Smooth Basalt can be created by smelting basalt cobblestone:
Similar to regular stone, four blocks of basalt can be combined in the crafting table to craft Basalt Bricks.
Aside from their explosion resistance and the fact that they cannot be destroyed by Ogres, all three basalt blocks do not have any functional use besides for construction and aesthetics.
Basalt is also found underground. Basalt does look different in Tekkit classic and Big Dig, or any other recent used mods, such as Feed the Beast.