Physical Properties of Chalk
Physical properties of rocks are used to identify the type of rocks and to discover more about them. There are various physical properties of Chalk like Hardness, Grain Size, Fracture, Streak, Porosity, Luster, Strength etc which defines it. The physical properties of Chalk rock are vital in determining its Chalk Texture and Chalk Uses.
Hardness and Strength of Chalk
The physical properties of Chalk 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 Chalk is 1 whereas its compressive strength is 5.00 N/mm2. Streak is the color of rock when it is crushed or powdered. The streak of Chalk is white whereas its fracture is . Luster of Chalk is the interaction of light with the surface of Chalk. Luster of Chalk is dull. Chalk cleavage is . The specific gravity of Chalk is 2.3-2.4. Chalk is opaque in nature whereas its toughness is 1. You can also know all the list of rocks in Opaque Rocks, Translucent Rocks and Transparent Rocks.