| Id | 13 |
| Identification Type | Mineral |
| Name | Palagonite |
| Distinguishing Features | |
| Description | Yellow or yellowish brown, amorphous to weakly birefringent, heterogeneous material forming through low-temperature hydration and elemental alteration of basaltic volcanic glass. Further alteration of palagonite produces zeolite minerals and smectite clays.
Palagonitized grains may retain glass shard forms. Association with unaltered volcanic glass and other volcanigenic sediment components such as pyroxenes and plagioclase feldspar. |
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