Minerals and Rocks. Minerals, elements, characteristics of minerals such as crystal form cleavage, fracture, lustre, colour, streak, transparency, structure, hardness specific grvity, important minerals such as feldspar, quartz, pyroxene, amphibole, mica, olivine and their characteristics classification of minerals, rocks, igneous, sedimentary, metamorphic rocks rock cycle
Minerals found in the crust are in solid form where as in intrior they are in liquid form98% of the crust consist of eight elements
