Physical properties of rocks are used to identify the type of rocks and to discover more about them. There are various physical properties of Greywacke like Hardness, Grain Size, Fracture, Streak, Porosity, Luster, Strength etc which defines it. The physical properties of Greywacke rock are vital in determining its Greywacke Texture and Greywacke Uses.
The physical properties of Greywacke depend on its formation. Physical properties of rocks play an important role in determining its applications in various fields. Rocks are rated on the on the Moh's Hardness Scale which rates the rocks on the scale from 1 to 10. Rocks with hardness 1-3 are soft rocks from 3-6 are medium hardness rocks and 6-10 are hard rocks. The hardness of Greywacke is 6-7 whereas its compressive strength is Not Available. Streak is the color of rock when it is crushed or powdered. The streak of Greywacke is white whereas its fracture is conchoidal. Luster of Greywacke is the interaction of light with the surface of Greywacke. Luster of Greywacke is dull. Greywacke cleavage is perfect. The specific gravity of Greywacke is 2.2-2.8. Greywacke is opaque in nature whereas its toughness is 2.6. You can also know all the list of rocks in Opaque Rocks, Translucent Rocks and Transparent Rocks.