Physical Properties of Porphyry
Physical properties of rocks are used to identify the type of rocks and to discover more about them. There are various physical properties of Porphyry like Hardness, Grain Size, Fracture, Streak, Porosity, Luster, Strength etc which defines it. The physical properties of Porphyry rock are vital in determining its Porphyry Texture and Porphyry Uses.
Hardness and Strength of Porphyry
The physical properties of Porphyry 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 Porphyry 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 Porphyry is white whereas its fracture is irregular. Luster of Porphyry is the interaction of light with the surface of Porphyry. Luster of Porphyry is dull. Porphyry cleavage is imperfect. The specific gravity of Porphyry is 2.5-4. Porphyry is translucent to opaque in nature whereas its toughness is 1.7. You can also know all the list of rocks in Opaque Rocks, Translucent Rocks and Transparent Rocks.