[meteorite-list] Meteorite Picture of the Day (Belle Plaine)
Bernd V. Pauli
bernd.pauli at paulinet.de
Wed Nov 2 10:46:30 EDT 2011
Mirko wrote:
"Wow, what a large chondrule in this Belle
Plaine piece! How large is this chondrule?"
Truly amazing! Thanks for sharing with us!
Judging from the scale cube, I'd say: the diameter is about 16 mm
thus making it a real "macrochondrule" according to J.C.Bridges
and the late R. Hutchison:
J.C. BRIDGES et al. (1997) A survey of clasts and large chondrules
in ordinary chondrites (Meteoritics 32-3, 1997, 389):
"The macrochondrules were classified on the criteria of having diameters
prior to sectioning of > 5 mm and the same mineral chemistry and internal
textures as normal-sized chondrules."
Best wishes,
Bernd
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