Pumice , called pumicite in its powdered or dust form, is a volcanic rock that consists of highly vesicular rough textured volcanic glass, which may or may not contain crystals. Pumice is a volcanic rock that consists of highly vesicular rough textural rock glass. It generally light colored. It is typically light colored. Scoria is another vesicular volcanic rock that differs from pumice in having larger vesicles, thicker vesicle walls and being dark colored and denser. Pumice is a volcanic rock that consists of highly vesicular rough textured volcanic glass, which may or may not contain crystals. Scoria is another vesicular volcanic rock that differs from pumice in having larger vesicles and thicker vesicle walls and being dark colored and denser. It is about five centimeters (two inches) across. This photograph shows a USGS scientist examining blocks of pumice at the toe of a pyroclastic flow at Mount St. Helens. It generally light colored. Pumice at Mount St. Helens: A pyroclastic flow will sometimes contain large pieces of pumice. It is created when gas-saturated liquid magma erupts like a carbonated drink and cools so rapidly that the resulting foam solidifies into a … It is typically light colored. Get to know information about Pumice texture and also know all about Pumice Color It has a specific gravity of less than one and will float on water. Pumice: This specimen shows the frothy vesicular texture of pumice.
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