[meteorite-list] Geno-, mono-, polymict, and xenolithic -- Part 3 of 3

[MexicoDoug at aol.com]

Interesting.  Tendency has been to "extend" vocabulary w/  the primitive 
concretions called "chondrites" as if they were "igneous"  (=>differentiated), and 
change the "unrelated" inclusions to include  related ones. The greatest 
scientific diversity is always had when you ask  a group of scientists to define 
what everyone already takes for granted:)
 
""Strange stone".  At this rate I'm just gonna call all my  meteorites 
xenoliths.  I wonder what was wrong with the word clast, and  others.  Maybe the 
marketing team has found that collectors pay more  for noble references (to 
Xenon), or getting from point A to B (Xeno)?
 
Good question.
 
Saludos, Doug
 
Bernd P. wrote:

Allende, CV3, and other carbonaceous chondrites contain xenoliths.
 
Bernd also cited:
 
NORTON O. R. (2002) The Cambridge Encyclopedia of Meteorites,
Glossary,  pp. 343, 344, 345, 347:
xenolith: an inclusion of a foreign rock in an  igneous host rock that is not
chemically related to the host  rock.

McSWEEN H.Y. (1999) Meteorites and Their Parent  Planets
(Cambridge University Press, Glossary, p. 288):
xenolith: an  inclusion of a foreign rock trapped within an igneous rock.
 
HUTCHISON R. (2004) Meteorites: A Petrologic, Chemical, and  Isotopic
Synthesis (Cambridge Planetary Science Series, pp. 506, Glossary, p.  444):
xenolith: a foreign rock; a lithic fragment genetically distinct from  its
host rock or melt; has been extended to include fragments of related  rock,
termed cognate xenoliths.