[meteorite-list] Chunks of Ice ... Cometary?

[lebofsky at lpl.arizona.edu]

Hello Bernd and Darren:

Swindle and Campins also wrote an article on cometary meteorites in the
May, 2006 issue of Meteorite magazine.

Larry



On Sat, July 12, 2008 11:19 am, bernd.pauli at paulinet.de wrote:

> Darren wrote:

>

>

> "Any numbers on how big the block would have to be? How small the

> surviving piece could be? I'm thinking of some of those chunks of ice that

> fall from the sky some times. Most come from planes. Could some be

> cometary?"

>

>

> Campins H. and Swindle T. (1998) Expected characteristics

> of cometary meteorites (MAPS 33, 1998, pp. 1201-1211):

>

> "The possibility of ice meteorites from comets has been discussed by

> Berczi and

> Lukács (1997). They argue in favor of the survivability of ice meteoroids

> through Earth's atmosphere and conclude that some make it to the ground.

> However, no ice

> meteorite has ever been recovered. Although a cometary origin should be

> considered when and if any falling ice of extraterrestrial origin is

> discovered, we will concentrate on the dusty or rocky portion of comets."

>

>

> Best regards,

>

>

> Bernd

>

>

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