Most pumice erupts from magmas which might be hugely charged with gas and possess a rhyolitic composition. Not often, pumice can erupt from gasoline-billed magmas of basaltic or andesitic composition. Geologists detect likely pumice deposits by finding out volcanic exercise and inspecting area outcrops of volcanic rocks. Aerial surveys and https://edenproductsltd.co.uk/2025/04/17/the-history-of-pumice-stone-from-ancient-civilisations-to-modern-day-uses/