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Pumice
Pumice is a highly vesicular pyroclastic igneous rock of intermediate to siliceous magmas including rhyolite, trachyte and phonolite.
Note: The above text is excerpted from the Wikipedia article "Pumice", which has been released under the GNU Free Documentation License.
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November 15, 2024
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Nov. 13, 2024 — A 'one of a kind' fossil discovery could transform our understanding of how the unique brains and intelligence of modern birds evolved, one of the most enduring mysteries of vertebrate ...
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