Re: [meteorite-list] NEW Plutonic Angrite - NWA 4590 Tamassint

2007-04-13 Thread Adam Hupe
Dear List, I just want to express my views on this subject and then tend to more pressing issues. It is interesting to note that similar arguments were presented when discussing SNCs. A lot of groups had a hard time believing that these series of rocks actually came from Mars. Now, you would be

[meteorite-list] NEW Plutonic Angrite - NWA 4590 Tamassint

2007-04-12 Thread Greg Hupe
Dear List Members, Yesterday I announced my new NomCom Approved Angrite which has a different lithology than the other known angrites. It is NWA 4590 Tamassint and is a Plutonic Angrite. For those who do not want to go to eBay to look up the complete information, here is the approved

Re: [meteorite-list] NEW Plutonic Angrite - NWA 4590 Tamassint

2007-04-12 Thread Rob McCafferty
Greg, In light of recent comments about new rocks getting scant discussion, I will make some input on this one. I have to spend some time to pore/paw? over the Lunar and Planetary Science stuff in detail but it it seems interesting at a glance through. The great diversity of minerals in this

Re: [meteorite-list] NEW Plutonic Angrite - NWA 4590 Tamassint

2007-04-12 Thread David Weir
Hello Rob and List, I'd like to chime in on this angrite subject, one I find very exciting as attested to by my continued purchases of different angrite specimens. I have been following the ongoing reasoned discussions by some very smart investigators about a possible angrite-Mercury

Re: [meteorite-list] NEW Plutonic Angrite - NWA 4590 Tamassint

2007-04-12 Thread Sterling K. Webb
Subject: Re: [meteorite-list] NEW Plutonic Angrite - NWA 4590 Tamassint Greg, In light of recent comments about new rocks getting scant discussion, I will make some input on this one. I have to spend some time to pore/paw? over the Lunar and Planetary Science stuff in detail but it it seems

Re: [meteorite-list] NEW Plutonic Angrite - NWA 4590 Tamassint

2007-04-12 Thread Rob McCafferty
Amazing stuff Sterling. I'm thinking this makes Angrites less likely to come from Mercury but does anyone have a CRE of Angrites? I just had it in my mind that it was only a few million to a few hundred million years which I think puts another nail in the coffin. If they're 4000MYr or so then

Re: [meteorite-list] NEW Plutonic Angrite - NWA 4590 Tamassint

2007-04-12 Thread David Weir
Hello Sterling and hopeful Hermean collectors, The angrites have FeO contents in the general range of ~25 wt%, so if they are from Mercury this does not conform to your inverse iron core ordering, unless the core of Mercury was not fully differentiated before the impact-related dissemination