* Quartz: This is the most common mineral in granite, typically accounting for 20-60% of its composition. Quartz gives granite its characteristic sparkle and resistance to weathering.
* Feldspar: This group of minerals, including orthoclase and plagioclase, is the second most abundant in granite, making up 20-60% of its volume. Feldspar provides granite with its color, which can range from white to pink to gray depending on the type of feldspar present.
* Mica: This group of minerals, including biotite and muscovite, is present in smaller amounts, typically 5-15%. Mica gives granite its characteristic shiny, flaky texture and can cause the rock to split along planes.
* Amphibole: This mineral is present in smaller quantities and is usually dark in color. It contributes to the overall color and texture of granite.
Other minerals: In addition to these major minerals, granite can also contain other minerals in trace amounts, such as iron oxides, magnetite, and zircon.
The specific mineral composition of granite can vary depending on its origin and the conditions under which it formed. This variation in mineral composition accounts for the wide range of colors, textures, and patterns that granite can exhibit.
