Most pumice erupts from magmas which have been hugely billed with gas and possess a rhyolitic composition. Hardly ever, pumice can erupt from gasoline-charged magmas of basaltic or andesitic composition. Geologists establish prospective pumice deposits by finding out volcanic activity and analyzing surface area outcrops of volcanic rocks. Aerial surveys https://bookmarkfriend.com/story19436412/a-review-of-pumice-stone