Steve Arnold looked like he was passing appetizers. He was circulating with a tray of gem jars in Tucson. Each one held a cm size morsel of Vaca Muerta olivine. Mesosiderites aren’t known to be olivine rich so these were pretty cool. Yes, please, may I have two?
Vaca Muerta olivine appears to be from the mantel of the mesosiderite parent body, not from the impactor that disrupted it. That PB is very similar to the Howardite – Eucrite – Diogenite PB but there is now evidence that suggests they are not the same. You can Google for details but I suggest you go first to David Weir’s always informative site for an up to date overview. Start with a few words on mesosiderites
then go to his Vaca Muerta page.