The Meteoritical Bulletin, No.
Northwest Africa 11479
meteorite (feldspathic breccia)
Purchased by Ke Zuokai
in Sept. 2017 from a Moroccan dealer.
characteristics: The meteorite has no fusion
crust with an irregular shape. Small white clasts are visible.
(W. Hsu, PMO) Lithic clasts and
mineral fragments (10 to 500 μm) are set in a fine-grained
anorthositic matrix. Mineral fragments are dominated by anorthite and pyroxene
grains with minor olivine. Some pyroxene grains exhibit exsolved lamella
structures. Maskelynite is present. Other accessory minerals include
taenite, chromite, ilmenite and troilite.
An94.1-97.9Or0.0-0.7, (average: An96.9±1.1Or0.2±0.2,
n=13); Olivine Fa17.8-44.9, Fe/Mn (cation ratio) = 77.7 - 124.7,
(average = 99.2±15.3, n=13 ); pigeonite Fs29.8-59.4En35.0-52.5Wo5.6-21.5,
Fe/Mn (cation ratio) =57.4-74.4 (average=64.7±5.7, n=8); augite Fs7.4-27.6En29.1-49.1Wo38.4-43.5,
Fe/Mn (cation ratio) =37.3-75.1 (average=58.4±12.1, n=10); minor
orthopyroxene Fs36.3En61.0Wo2.7, Fe/Mn
(cation ratio)=54.7, n=1.
Lunar feldspathic breccia based on texture and composition.
20 g on deposit at PMO. Ke Zuokai holds the main mass.