Granite

Granite is a widely distributed acidic plutonic rock with a SiO₂content greater than 66%. Granite is often greyish white or pale red and is mainly composed of quartz, K-feldspar, plagioclase and small amounts of biotite, hornblende or pyroxene. The amount of quartz is approximately 30% and may reach 60%. Dark minerals account for approximately 5%, whereas the K-feldspar content always exceeds the plagioclase content. The total feldspar content ranges from 10% to 65%. Granite is hard and resistant, and it generally forms large mountains. Granite contains well developed joints, and after weathering, several types of distinct features can be formed, which can become tourism resources of high aesthetic value. Granite is widely distributed in China. The Taishan, Huangshan, Tianzhushan, Sanqingshan and Tailaoshan Geoparks all have granite landscapes. The scenic areas of Badaling Ridge, Panshan, Qianshan in Anshan, Fenghuangshan in Dandong, Putuoshan, Gushan, Laoshan, Jigong, Hengshan, the...