The Rocks Igneous Rocks PCSSTUDIES Geography
May 21, 2021 The igneous rocks are generally granular and crystalline. These rocks are usually hard and water draining in them is very difficult at the joints. The rocks are mostly related to volcanic activities. mostly consisting of silicate minerals. Minerals found in igneous rocks are such as- copper, iron ore, gold, silver, zinc, lead, manganese, mica, etc.