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Description and notes

There are three groups of Martian meteorite: shergottites, nakhlites and chassignites, collectively known as SNC meteorites.
A 52 g meteorite was purchased by Luc Labenne from a dealer in Zagora, Morocco, in 2011 December. Coarse grained with gabbroic texture. The primary minerals are clinopyroxene (as equant grains up to 2.2 mm across) and maskelynite (as laths up to 3 mm long), accompanied by accessory intergrown Ti-magnetite and ilmenite, pyrrhotite, chlorapatite, and merrillite. Pyroxene is complexly zoned from pigeonite and subcalcic augite to ferropigeonite rims, associated with fayalite and intergrowths of hedenbergite+fayalite+silica after former pyroxferroite. Minor terrestrial baryte and calcite occur along some grain boundaries.
Pigeonite (Fs34.5-38.3Wo17.8-11.4, FeO/MnO = 28-31), 
subcalcic augite (Fs26.8Wo31.9, FeO/MnO = 29),
ferropigeonite rims (Fs74.2-80.9Wo17.1-12.4, FeO/MnO = 34-41), 
plagioclase (An47.9-58.8Or1.8-1.0)(Na<sub>0.45</sub>K<sub>0.01</sub>Ca<sub>0.53</sub>)(Al,Si)<sub>4</sub>O<sub>8</sub>