Most pumice erupts from magmas which are extremely billed with gas and have a rhyolitic composition. Hardly ever, pumice can erupt from fuel-billed magmas of basaltic or andesitic composition. This hurry of gas through the vent shreds the magma and blows it out as being a molten froth. The froth https://bookmarkboom.com/story19404410/facts-about-pumice-stone-revealed