2022-05-17 03:00:38
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Trachyte Blocks

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Trachyte is an extrusive rock, belonging to the alkali series of intermediate volcanic rocks. Trachyte is usually light-colored and aphanitic, with minor amounts of mafic minerals, and is formed by the rapid cooling of lava enriched with silica and alkali metals. It is the volcanic equivalent of syenite.

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