[meteorite-list] blue chondrule in a CM2

2010-02-06 Thread Zelimir . Gabelica
Hi List, Here are 3 pics of a genuine blue chondrule spotted upon breaking a fagment of the CM2 meteorite Tanezrouft 082 (purchased last June in Ensisheim, from A. Gouesslain/J.-L. Parodi, the meteorite finders). See here: http://www.agab.be/question/question.html Question: what could

Re: [meteorite-list] blue chondrule in a CM2

2010-02-06 Thread Jeff Grossman
Hibonite - Ca(Al,Ti,Mg)12O19 - in a CAI. It can be gorgeous. Jeff On 2010-02-06 12:06 PM, zelimir.gabel...@uha.fr wrote: Hi List, Here are 3 pics of a genuine blue chondrule spotted upon breaking a fagment of the CM2 meteorite Tanezrouft 082 (purchased last June in Ensisheim, from A.

Re: [meteorite-list] blue chondrule in a CM2

2010-02-06 Thread Zelimir . Gabelica
Hello Jeff, Matthias, Ted, all, Your wise suggestions about the blue inclusion are highly appreciated. I also first thought of hibonite that was mentioned in a similar discussion we had on the list a couple of years ago. At the time, Jeff Kuyken showed us a chondrule-like inclusion in

Re: [meteorite-list] blue chondrule in a CM2

2010-02-06 Thread Jeff Grossman
CAIs can be quite round. The famous Blue Angel CAI was a fairly round, mm-size object in another CM chondrite, Murchison (this publication was in 1982-ish in GCA). Not all hibonite in meteoritic CAIs is the same color. The blue comes from Ti3+, formed under reducing conditions. The blue

Re: [meteorite-list] blue chondrule in a CM2

2010-02-06 Thread Jeff Kuyken
inclusion. It seems to be a solid blue CAI or chondrule. Cheers, Jeff - Original Message - From: zelimir.gabel...@uha.fr To: Ted Bunch tbe...@cableone.net Cc: meteorite-list@meteoritecentral.com Sent: Sunday, February 07, 2010 9:20 AM Subject: Re: [meteorite-list] blue chondrule