Pumice is an extrusive igneous volcanic rock formed through the rapid cooling of air-pocketed lava, which results in a low-density, high-porosity rock. Fine-grained pumice, or pumicite, is defined as minute grains, flakes, threads or shards of volcanic glass, with a size finer than 4 millimeters.
Citation Information
| Publication Year | 2015 |
|---|---|
| Title | Mineral resource of the month: Pumice and pumicite |
| Authors | Robert Crangle |
| Publication Type | Article |
| Publication Subtype | Journal Article |
| Series Title | Earth |
| Index ID | 70186704 |
| Record Source | USGS Publications Warehouse |
| USGS Organization | National Minerals Information Center |