Granite rock, classification and origin
What type rock is Granite? Granite is a coarse-grained igneous rock composed of about 25 percent quartz and roughly 65 percent feldspar, mostly potassium and sodium-rich feldspar. Quartz are roughly spherical in shape, are often glassy and clear to light gray in colour. Feldspar crystals are generally white to gray or salmon pink in colour … Read more