Do igneous rocks float

Answer 1

Vesicular pumice is an extrusive igneous rock that consists of a foam of mineral matter (usually silica-rich and glassy) enclosing bubbles of gas (usually carbon dioxide). The mineral material itself is denser that water, but the bubbles make the rock overall less dense than water, and it will float. Pieces of pumice may often be found washed up on beaches.

Pumice is formed when magma of intermediate or felsic composition having a large proportion of dissolved gasses is simultaneously rapidly de-pressurised and rapidly cooled. The gasses exsolve like bubbles in warm and shaken soda-pop, and the mineral matter solidifies before the foam can collapse.

Answer 2

Most igneous rocks are denser than water, so they do not float. However, some types of igneous rocks, such as pumice, can contain trapped air bubbles which make them less dense than water, causing them to float.

Answer 3

The extrusive vesicular igneous rock pumice has a density less than that of water and floats. No other igneous rock is known to have a density less than that of water.

Answer 4

The igneous rock that floats in water is pumice. The rock is lightweight and has thin bubble walls that help it float.

Answer 5

Vesicular pumice, an extrusive igneous rock, is able to float because it contains bubbles filled with gas, so that it has a low average density.

Answer 6

The igneous rock that floats is called pumice. It floats because it has tiny air bubbles in it.

Answer 7

Pumice is an igneous rock which floats.

Answer 8

pumice

Answer 9

its pumice