Good Question, Mark: Hap McSween author of Meteorites and their Parent Bodies and Department head at the UNIV of [EMAIL PROTECTED] did calculations for maximum and minimum sizes at launch that allowed a Martian meteorite to arrive on the ground. It had to be small enough to not flash melt at launch and large enough to completely ablate. A lot of assumptions as to ablation loss. Seems like the size of a grapefruit give or take for the upper limit. Lunar was a goose egg size.
However, since He did calculations for both Mars and Moon and I've not read the book in 5 years, perhaps someone else can look it up. Either way I believe Zigami exceeded that size and We've at least one lunar that was larger. When Vision quest first came to the list I mentioned there were at east three things from the information at hand that disqualified the Vision Rock as a Martian meteorite without further analysis. The excessive size was one of them. No one bothered to ask so I figured I'd let it lie until it occurred to some critical thinker. Congratulations! Elton --- MARK BOSTICK <[EMAIL PROTECTED]> wrote: > Hello all, > > An interesting observation on lunar meteorites is > that they are small. The largest around one kilo. Has anyone done any math on the size of lunar > meteorites that could make it to the earth? > > Clear Skies, > Mark Bostick ______________________________________________ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list