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Black irregular volcanic slate

Volcanic rock (volcanic rock or pumice) is a kind of glassy lava with dense pores, which is formed by the rapid cooling of magma in the process of volcanic eruption, due to the rapid decrease of pressure and the rapid overflow and expansion of interna

Product Details

  Volcanic rock (volcanic rock or pumice) is a kind of glassy lava with dense pores, which is formed by the rapid cooling of magma in the process of volcanic eruption, due to the rapid decrease of pressure and the rapid overflow and expansion of internal gas. The pore volume accounts for more than 50% of the rock volume. Pumice is called pumice because it has many pores, light weight and can float on the water surface. It is characterized by high strength, heat preservation, heat insulation, sound absorption, fire prevention, acid and alkali resistance, corrosion resistance, and no pollution, no radioactivity.

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