Dacite |
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DaciteExtrusive igneous rock of intermediate to felsic composition.Fine-to-medium grained, greenish-gray and buff-colored tephra fragments welded into densely-compacted volcanic tuff. From Cady Mountains area, Mojave Desert, California. |
| https://gotbooks.miracosta.edu/rocks/igneous/11.html | 2/2/2021 |