In contrast, rocksalt-structured nitrides are known for their superconducting and refractory properties.

Again I lay my knife upon this piece of rocksalt, and with a blow cleave it in one direction.

That differences, for example, exist between the inner structure of rocksalt and that of crystallised sugar or sugar-candy, is thus strikingly revealed.

Rocksalt cleaves in three directions, and the resulting solid is this perfect cube, which may be broken up into any number of smaller cubes.