The fabric cools so immediately that atoms from the soften are not able to prepare by themselves into a crystalline composition. As a result, pumice is definitely an amorphous volcanic glass often known as a "mineraloid." Porosity: Pumice is highly porous, with nearly ninety% of its volume consisting of empty https://edenproductsltd.co.uk/2025/04/17/the-history-of-pumice-stone-from-ancient-civilisations-to-modern-day-uses/