Category Archive 'Rocks'

18 May 2012

Orange County Mystery

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Orange County Health Care Agency photo of the two rocks picked up on San Onofre State Beach

LA Times:

The case of an Orange County woman severely burned after rocks collected last weekend from San Onofre State Beach ignited in her pocket has puzzled scientists, who say they’ve never seen anything like it and aren’t quite sure how it happened. …

The 43-year-old San Clemente woman, who remained hospitalized Thursday with second- and third-degree burns, visited the northern San Diego County beach last Saturday with her family, authorities said. Her name has not been released.

Her children collected rocks, including two that were distinctive — one was large and a marbled gray; the other much smaller and a Teenage Mutant Ninja Turtle green.

Both of the beach stones were streaked and flecked with bright orange.

The mother put the rocks in her right pocket and went home. Then they suddenly ignited.

Witnesses reported seeing flames coming from her shorts. She had second- and third-degree burns from her right knee to her right thigh, with second-degree burns on her hands. Her husband also had burns on his hands from trying to help her.

The Orange County Health Care Agency examined the two rocks, and tests revealed a “phosphorous substance” on the rocks, which now have been sent to a state laboratory for further testing, said Tricia Landquist, an agency spokeswoman.

That discovery, however, has only added to the mystery.

Scientists wondered: How does a chemical like phosphorus wind up on a Southern California beach? And why did a substance so volatile not burst into flames sooner?

Hat tip to Karen L. Myers.


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