[meteorite-list] Pallasite Vs Mesosiderite

[Pete Shugar]

OK, to me they look the same when you cut them open.
What gives? Does one have more metal or more olivine
than the other?
Brahin is a Pallasite with beautiful olivine and metal to hold
it all together.
Altho I have as yet to see a slice of Vaca Muerta, a mesosiderite, just 
looking at it
I can see what appears to be olivine crystals.
Would someone chime in with a concise defination of the two, please?
Thanks for the help.
Pete