Lying Isn't The Only Way To Set Your Pants On Fire

A woman in Orange County, California discovered that rock collecting can be a dangerous hobby, when the rocks she'd collected from the beach earlier that day suddenly ignited in her pocket!

Here's the scoop:
Orange County Fire Authority officials tell the newspaper that the woman collected the rocks on a nearby beach, returned home and "was standing in her kitchen ... when the pocket of her cargo shorts caught fire."
"I talked to the paramedic who treated her, and in his 27 years in responding to calls near the beach, he's never seen this," Fire Authority Capt. Marc Stone told the Register. "The rocks were still smoking when firefighters took them to the hospital."

Now, they're being tested. It's possible, Stone said, that phosphorus in the stones may have caused the combustion.

And they say hobbies like rock and shell collecting are a safe and relaxing activity.


Newest 5
Newest 5 Comments

As a former geology professor this seems impossible to me. I can't imagine anything in rocks gathered at the beach which could be chemically reactive under any ordinary circumstance. Elemental phosphorus wouldn't last a minute on a beach before reacting with everything around it.
Abusive comment hidden. (Show it anyway.)
My assumption is that friction between two rocks threw off a spark that ignited pocket lint. An alternate theory is that the whole thing is a lie to cover up some really stupid thing the two of them did when they got home.
Abusive comment hidden. (Show it anyway.)
It might have been white phosphorus, which is used as ammunition . When wet, the untrained eye can mistake it as amber. When in contact with air, it ignites and burns at 1300C (2372 F). As long as the rock has a protective layer of water, it is not dangerous, but as soon as it starts to dry...

This phenomenon is will known in Germany, there is even a sign on the island of Usedom that warns people to pay attention what kinds of rocks they gather (German):

In a report on TV, a doctor was quoted as saying that the burns are very nasty and most follow the same pattern: upper leg (because people put the stones into their pockets) and one hand (when people try to get the then ignited phosphorus out of their pocket again.

Simple safeguard: Put amber-like rocks into a bucket, basket or even your handbag - everywhere but in your pockets! When dried and still not burning, it's not phosphorus.

More on white phosphorus:
Abusive comment hidden. (Show it anyway.)
Login to comment.

Email This Post to a Friend
"Lying Isn't The Only Way To Set Your Pants On Fire"

Separate multiple emails with a comma. Limit 5.


Success! Your email has been sent!

close window

This website uses cookies.

This website uses cookies to improve user experience. By using this website you consent to all cookies in accordance with our Privacy Policy.

I agree
Learn More