MICHAEL SZOENYI / SCIENCE PHOTO LIBRARY MICHAEL SZOENYI / SCIENCE PHOTO LIBRARY
Pele's tears' volcanic basalt. Single teardrop-shaped lump of volcanic basalt rock on a person's hand. Fragments of lava like this are formed when lava fountains eject hot molten droplets, which then cool rapidly. Specimen from an eruption of Kilauea Iki crater, Hawaii Volcanoes National Park, Big Island, Hawaii, USA.
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