Igneous RocksThe difference between granites and basalts is in silica content and their rates of . Basaltic rocks (gabbro & basalt) are made up of feldspars and other minerals.difference between feldspar,Olivine, Cordierite and Feldspar**most common color and composition (yellow-green). Therefore, the depth of color depends on Fe content. Olivine is a silicate mineral where the silicate.
difference between feldspar