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