Physical properties of rocks are used to identify the type of rocks and to discover more about them. There are various physical properties of Pumice like Hardness, Grain Size, Fracture, Streak, Porosity, Luster, Strength etc which defines it. The physical properties of Pumice rock are vital in determining its Pumice Texture and Pumice Uses.
The physical properties of Pumice 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 Pumice is 6 whereas its compressive strength is 51.20 N/mm2. Streak is the color of rock when it is crushed or powdered. The streak of Pumice is white, greenish white or grey whereas its fracture is planar. Luster of Pumice is the interaction of light with the surface of Pumice. Luster of Pumice is earthy. Pumice cleavage is perfect. The specific gravity of Pumice is 2.86. Pumice is opaque in nature whereas its toughness is 3. You can also know all the list of rocks in Opaque Rocks, Translucent Rocks and Transparent Rocks.
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