The performed analyses of the sampIes of basaltic rock from Rębiszów deposits revealed that the rock is a suitable raw material for prospective production of insulating materials due to such its properties as: low content of acid module, amount of primary crystals less than 20% vol., considerable content of nepheline which lowers softening point of the rock. In addition, the values of parameters characterizing crystallisation strength of a melt indicate possibility for application of the basalt from Rębiszów in rock metallurgy. Chosen engineering tests performed on the basalt show that the basalt can also be used for production of a road and railway construction details, road and railway aggregates, aggregates for concrete production (required at least low compression strength), rock dust and filling materiaIs. This is proved by high compression strength values in air-dry state as well as by high resistance to freezing. Moreover, the investigated basalts show minimum absorbability. It should be marked however, that the determined parameters of the basalt give only initial indication on their possible application. Each eventual application of the rock would require confirmation of the whole range of properties described in the revelant standards.