chondrite ordinaire (2000_2004).
voici sa composition:
contains polygonal, equigranular (~1 mm grain size) crystals; no relict chondrules; prominent twinning in plagioclase. Mineral modes: orthopyroxene, 37 vol. %; olivine, 35 %; plagioclase, 12 %; Ca-rich pyroxene, 6 %; troilite, 4.5 %; metal (taenite only), 3.5 %; chromite, 2 %. Very homogeneous; silicate compositional range is within the analytical precision of ± 0.2 mol %. Orthopyroxene, Fs19.1Wo1.3, Fe/Mn = 41; olivine, Fa22.0, Fe/Mn = 63 plagioclase, An53.4Or2.2; clinopyroxene, Fs7.2Wo47; taenite, Ni = 16 .7 wt %; chromite, Cr/(Cr+Al) = 0. 73. Shock level, S1; weathering grade is W2.