Properties of Trondhjemite and Oil shale play an important role in determining the type of rock. Along with Trondhjemite vs Oil shale properties, get to know more about Trondhjemite Definition and Oil shale Definition. For the ease of understanding, the properties of rocks are divided into physical and thermal properties. Rocks have a variety of properties like hardness, color, specific gravity, fracture, cleavage, luster etc. Know all about physical and thermal properties of Trondhjemite and Oil shale.