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Swift
2016-Jan-14, 05:34 PM
From Huntington Post (http://www.huffingtonpost.com/entry/lava-lake-creates-glass-egg_569545d1e4b086bc1cd56625)


On Friday, during a fairly typical explosion at the lava lake at Hawaii's Kilauea volcano, various volcanic rock fragments flew into the air.

But later that day, on the rim of Halemaʻumaʻu Crater, some 360 feet above the lava lake's surface, Tim Orr, a geologist at the Hawaiian Volcano Observatory, found something he had never seen before.

"It's kind of like a balloon,"Janet Babb, observatory geologist and public information officer, told The Huffington Post. "It's hollow inside with this thin, glassy shell, which is very fragile."

Scientists are calling it the "coolest Pele's tear" ever found -- a reference to the Hawaiian goddess of volcanoes and the tear drop-shaped glass particles that form when fountaining molten lava quickly cools.

There is both a photo of the egg and a video of the explosion at the link.

geonuc
2016-Jan-14, 09:00 PM
Interesting. If someone had asked me whether it was uncommon to find hollow Pele's tears, I would have said no. I would have been wrong.

Trebuchet
2016-Jan-15, 05:20 AM
That's really cool. Here's from the HVO site on the event:
http://hvo.wr.usgs.gov/multimedia/index.php?newSearch=true&display=custom&volcano=1&resultsPerPage=20

citpeks
2016-Jan-17, 03:40 PM
There are occasional reports of "lava balloons" that float to the surface from underwater eruptions.

http://www.volcanodiscovery.com/el-hierro-eruption/lava-balloons.html

publiusr
2016-Jan-22, 07:18 PM
Just the thing to house a tiny pewter dragon hatchling