Pumice

Pumice / noun :

First Page Mentioned (By Name) : ch. “Condemned Complex” – pg. 72

Pumice is a very porous igneous rock that's almost sponge like in appearance. Its low gravity, and density, also allows some formations of pumice to float in water. Pumice is primarily comprised of textured volcanic glass, with a crystal content that varies greatly from source to source. It's usually light in color, and the holes tend to be small, albeit numerous throughout the rock. Pumice tends to be silicic or felsic in composition, and forms through rapid cooling and depressurization.

Where you find pumice, you are also likely to find other metamorphic and igneous rocks, such as scoria and basalt, all three of which Geb has plenty.

Related Entries: Basalt; Geb (The Island Of); Igneous Rock; Metamorphic Rock; Scoria

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