The Meteoritical Bulletin, No.
Northwest Africa 11457
meteorite (feldspathic breccia)
Seven pieces with a total mass of 273 g were purchased form a Moroccan
dealer in Ouazazate, Morocco May 2016. The sample may have been found in
Algeria and brought by nomads to a dealer in Zwirate in the north of
characteristics: The susceptibility values (J.
Gattacceca, CEREGE) for the four
largest samples are as follows: log χ (◊ 10-9 m3/kg)
= 3.31 (117.7g sample); log χ (◊ 10-9 m3/kg) =
3.56 (88.64 g sample); log χ (◊ 10-9 m3/kg) =
3.25 (39.91 g sample); log χ (◊ 10-9 m3/kg) =
3.25 (15.34 g sample).
(A.-K. Kraemer and A. Bischoff, IfP)
Breccia composed of angular anorthite-rich lithic and mineral fragments
embedded in a fine-grained clastic matrix. Observed minerals include
anorthite, olivine, low-Ca pyroxene, Ca-rich pyroxene, silica polymorph,
Al-Ti-chromite, kamacite, ilmenite, troilite, pendlandite and
schreibersite. Calcite veins indicate moderate degree of weathering.
compositions and geochemistry: Olivine (mean: Fa48.2, Fe/Mn =
101; N = 199), low-Ca pyroxene (mean Fs35.4Wo12.4,
Fe/Mn = 62, 22,9 N = 199), Ca-rich pyroxene (mean: Fs30.7Wo35.2;
Fe/Mn = 69; N = 73), anorthite (mean An92.7Or0.3, N =
Lunar (feldspathic breccia).
22.9 g and thin sections. Main mass with Ben Hoefnagels.