Distinguishing features of 3 types of rocks

                         Distinguishing features of 3 types of rocks

Igneous Rocks	Sedimentary Rocks	Metamorphic Rocks
1. Generally hard, massive, compact with interlocking grains 2.No fossils present 3.No bedding planes present 4.Surrounding rocks are baked 5. Contains much feldspar group of minerals E.g.: Granite, basalt, syenite etc.	1. Generally soft and layered 2.Fossils are common 3.No effect on the surrounding rocks E.g.: Sandstone, Limestone, Conglomerate etc.	1.Generally hard, interlocking grains and bedded (if derived from sedimentary rocks) 2. Rarely preserves fossils in case of sedimentary origin 3.Foliated E.g.: Gneiss, Schist, Quartzite, Marble etc.