Occurrence, Texture, and Classification of Igneous Rocks
igneous rock Igneous rocks Igneous rocks are formed by the crystallisation of a magma The difference between granites and basalts is in silica content and their
Granite This is a hard igneous rock made up of clearly visible crystals of various minerals Granite looks good when it is polished and because it is also a blackrock rocks have higher Sr concentrations than Rock 1976 ) Sr = 1840 ppm ) , whereas igneous rocks of Variscan age between 360 and 260
igneous rock Igneous rocks Igneous rocks are formed by the crystallisation of a magma The difference between granites and basalts is in silica content and their
rock paper scissors Granite This is a hard igneous rock made up of clearly visible crystals of various minerals Granite looks good when it is polished and because it is also a
rocks have higher Sr concentrations than Rock 1976 ) Sr = 1840 ppm ) , whereas igneous rocks of Variscan age between 360 and 260