The term can be utilized synonymously with "volcanic ash." It can be mined from volcanic ash deposits, or it may be made by crushing rock pumice. This rush of fuel within the vent shreds the magma and blows it out to be a molten froth. The froth speedily solidifies because https://edenproductsltd.co.uk/2025/04/17/the-history-of-pumice-stone-from-ancient-civilisations-to-modern-day-uses/