Editing Chondrule (section)

==Abundance and size==
[[File:10499 - Detailed Slice.png|200px|thumb|Closely packed Chondrules in CO3 Carbonaceous Chondrite meteorite NWA 10499]]

Different kinds of the stony, non-metallic [[meteorite]]s called [[chondrite]]s contain different fractions of chondrules (see table below). In general, [[carbonaceous chondrite]]s contain the smallest percentage (by volume) of chondrules, including the [[CI chondrite]]s which, paradoxically, do not contain ''any'' chondrules despite their designation as chondrites, whereas [[ordinary chondrite|ordinary]] and [[enstatite chondrite|enstatite]] chondrites contain the most.  Because ordinary chondrites represent 80% of the meteorites that fall to earth, and because ordinary chondrites contain 60–80% chondrules, it follows that (excluding dust) most of the meteoritic material that falls on earth is made up of chondrules.

Chondrules can range in diameter from just a few micrometers to over {{convert|1|cm}}.  Again, different kinds of chondrites contain different ranges of chondrule sizes: they are smallest in CH, CM, and CO chondrites (see [[Meteorites classification|meteorite classification]]), moderately large in CR, CV, L, LL, and R chondrites, and largest in some CB chondrites (see table).  Other chondrite groups are intermediate between these.

{|class="wikitable" align=center
|+ Table 1: Chondrule sizes and abundances<ref>Weisberg et al. (2006) "Systematics and Evaluation of Meteorite Classification". In, ''Meteorites and the Early Solar System'' II, 19–52 (D.S. Lauretta and H.Y. McSween, Eds.), Univ. Arizona Press</ref> 
!Chondrite group!!abundance (vol%)!!avg. diam. (mm)
|-
|CI||0||&ndash;
|-
|CM||20||0.3
|-
|CO||50||0.15
|-
|CV||45||1
|-
|CK||45||1
|-
|CR||50–60||0.7
|-
|CH||70||0.02
|-
|CB||20–40||10 (a subgroup), 0.2 (b subgroup)
|-
|H||60–80||0.3
|-
|L||60–80||0.7
|-
|LL||60–80||0.9
|-
|EH||60–80||0.2
|-
|EL||60–80||0.6
|-
|R||&gt;40||0.4
|-
|K||30||0.6
|}