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Woods Hole Oceanographic Institution

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The interior surface of lava crusts that have interacted with a seawater-derived vapor phase are mantled by crystallites that have formed from the melt with contributions from the vapor. Sodium (Na) rich plagioclase feldspar are the the larger crystals at the center of the image. Dioposide are the smaller crystals coating the interior surface of the crust. (Adam Soule)


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