11. The volcanic glass bubbles burst and are dispersed by the wind, showering flakes of glass downwind. 12. Volcanic glass weathers rapidly, providing an ample supply of soluble silica to cement the underlying soil.13. Third, tektites contain virtually no water ( < 0.02 wt % ), unlike terrestrial volcanic glasses . 14. At Ring Mountain, andesite comprises 70 % brown volcanic glass and vesicular textures as much as 15 %. 15. A tie tack did not contain a precious gem as originally believed, he said, but rather volcanic glass . 16. The term " Pele's hair " is also used to refer to a type of filamentous volcanic glass . 17. Devitrified obsidian and other volcanic glasses typically develop graphic textures; peperite is a typical rock formed by this process. 18. Fourth, the flow-banding within tektites often contains particles and bands of lechatelierite, which are not found in terrestrial volcanic glasses . 19. Particles of volcanic glass called tachylite were created as the water turned to steam and explosively fragmented the hot magma. 20. These projections are dark and are composed of small andesine and hornblende crystals disseminated in a light brown volcanic glass .
