Happy Thanksgiving everybody: The Ninqiang Carbonaceous chondrite classification question has been further pondered by Dr. Rubin of UCLA. Here's his most interesting reply.
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- To: <MARSROX@aol.com>
- Subject: Re: Ninqiang classification - Is that your final answer
- From: "aerubin" <aerubin@ucla.edu>
- Date: Wed, 24 Nov 1999 13:35:28 -0600
When we initially described Ningqiang we called it a CV3-an, because it was closest in composition and petrologic properties to CV chondrites. When we later described the CK group, we reclassified Ningqiang as CK3-an, recognizing that it was closer in its bulk composition to CK than CV. Nevertheless, we recognized at the time that its abundance of refractory lithophile elements was lower than those in the other CK chondrites. It seems clear that Ningqiang is an ungrouped C3 chondrite, perhaps someday to be called a CN3 (where the N is for Ningqiang). It is the first member of a new carbonaceous chondrite group that is related to CV and CK, i.e., part of the CV-CK clan although from a different parent body. Alan Rubin -----Original Message----- From: MARSROX@aol.com <MARSROX@aol.com> To: rubin@igpp.ucla.edu <rubin@igpp.ucla.edu> Date: Wednesday, November 24, 1999 3:11 PM Subject: Ninqiang classification - Is that your final answer >Dr. Rubin: > >Since Joel (M!) tells me that you "peer review" submissions to his magazine, >I'll assume that you recognize my name. > >There's a little academic/commercial controversy surrounding the >classification of Ninqiang (carb. chondrite). I'm aware of work you did in >the late 1980's on it but there's been quite a bit more written on this one >since, obviously it's a tough chinese cookie to classify. Some of the >classifications suggested since your papers are CK -Anom, CK4, CV3, CK3 >-Anom, and lately C3 - Ungrouped (as per Met Base V4.0) and C3 -Anom. > >I'd like to pass on the the meteorite "community-at-large" an authoritive >word. What sayest thou now? > >Best regards, > >Kevin Kichinka
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