Blackstone

Blackstone is a dark colored block, which functions similarly to cobblestone. It can be found only in the Nether.

Natural generation
Blackstone generates naturally in the basalt deltas biome found in the Nether. $$, Medium sized veins can also generate in all nether biomes except basalt deltas, similarly to gravel.

From block loot
Blackstone requires a pickaxe to be mined, in which case it drops itself. When mined without a pickaxe, it drops nothing.

Usage
Blackstone can be used as a substitute for cobblestone in the Nether as it can be used to craft stone tools and furnaces. It can also be used to craft polished blackstone.

Trivia

 * Although it can be used to craft stone tools and furnaces, it cannot be used to craft dispensers, droppers, pistons or other blocks that use cobblestone in their recipes.

Schwarzstein Roche noire Czernit Pedra negra Чернокамень 黑石