Most pumice erupts from magmas which are hugely billed with gas and also have a rhyolitic composition. Rarely, pumice can erupt from gasoline-billed magmas of basaltic or andesitic composition. Geologists discover prospective pumice deposits by finding out volcanic activity and inspecting surface outcrops of volcanic rocks. Aerial surveys and floor-centered https://edenproductsltd.co.uk/2025/04/17/the-history-of-pumice-stone-from-ancient-civilisations-to-modern-day-uses/