Most pumice erupts from magmas which have been extremely charged with gas and possess a rhyolitic composition. Almost never, pumice can erupt from gas-charged magmas of basaltic or andesitic composition. Pumice mining is often a floor Procedure as deposits in many cases are Found near or for the Earth's surface https://edenproductsltd.co.uk/2025/04/17/the-history-of-pumice-stone-from-ancient-civilisations-to-modern-day-uses/