[meteorite-list] RFS Picture of the Day: Philippe Thomas' NWA 4769 (LL3.8)

[bernd.pauli at paulinet.de]

Descriptive note by the author:

"A type-II porphyritic pyroxene (PP) chondrule in crossed polarized
light. Thin section from the NWA 4769 LL3.8, S1, W1 chondrite."


Hello List,

An almost identical chondrule is pictured in:

NORTON O. R. (2002) The Cambridge Encyclopedia of Meteorites
(Cambridge University Press) on page 110. On pp. 109-110, you'll
also find information on why this chondrule-type is called a type II
porphyritic chondrule.

Best wishes from the proud owner of a beautiful 5.95-gram slice of this
troilite-rich desert beauty. My slice also features a gorgeous 7 x 5 mm
troilite bleb and several oval chondrules!

Bernd