Re: [meteorite-list] Bull's-eye chondrule assumptions (& New Meteorite Atlas)

2005-05-04 Thread Jeff Grossman
D]> To: Sent: Wednesday, May 04, 2005 8:30 AM Subject: Re: [meteorite-list] Bull's-eye chondrule assumptions (& New Meteorite Atlas) Oh, I didn't see the other question in this thread. The "bites" out of "pac-man" chondrules can have one of two origins. T

Re: [meteorite-list] Bull's-eye chondrule assumptions (& New Meteorite Atlas)

2005-05-04 Thread Gerald Flaherty
Hi Jeff and List, Jeff you use the term bleaching, is that an oxidation process? Jerry Flaherty - Original Message - From: "Jeff Grossman" <[EMAIL PROTECTED]> To: Sent: Wednesday, May 04, 2005 8:30 AM Subject: Re: [meteorite-list] Bull's-eye chondrule assumptions (&

Re: [meteorite-list] Bull's-eye chondrule assumptions (& New Meteorite Atlas)

2005-05-04 Thread Jeff Grossman
Oh, I didn't see the other question in this thread. The "bites" out of "pac-man" chondrules can have one of two origins. The most popular explanation is that the chondrule underwent a low-velocity collision with another chondrule during the time in its cooling history when it was mostly cryst

Re: [meteorite-list] Bull's-eye chondrule assumptions (& New Meteorite Atlas)

2005-05-04 Thread Jeff Grossman
If the chondrule you mean is the black one with the light colored rim at the left side halfway up, this looks to be a bleached chondrule. See: http://articles.adsabs.harvard.edu/cgi-bin/nph-iarticle_query?2000M%26PS...35..467G Such chondrules start out as very fine-grained radial pyroxene chondr

Re: [meteorite-list] Bull's-eye chondrule assumptions (& New Meteorite Atlas)

2005-05-04 Thread Jeff Kuyken
I was just going through my emails and found this one. Well, I have just received Marvin Killgore's new "A Color Atlas of Meteorites in Thin Section" from Mike Jensen. I highly recommend this book which has numerous fantastic images of MANY different meteorite types. One of the things I noticed wa