NWA 17210 (26.43 gram)

Classification: L-melt rock S1/W1
Place/Time: 2024 in Morocco
Mass: 850 gram

Physical characteristics: Brownish rock with some fusion crust.

Petrography: The meteorite shows a microporphyritic texture of predominantly 20-100 µm sized partly euhedral olivine and low-Ca pyroxene grains plus interstitial Si,Al-rich mesostasis. Often pyroxene poikilitically encloses pyroxene. Olivine and pyroxene show weak compositional zoning and low-Ca pyroxenes are frequently overgrown by Ca-rich rims. Contains up to 4 mm sized mostly spherical troilite-FeNi metal assemblages often adhered to vesicles. No relict chondrules detected.

Geochemistry: olivine: Fa_21.8±2.2 (Fa_17.3-24.2, FeO/MnO=45±3, n=12); pyroxene: Fs_19.7±0.5Wo_4.2±1.5 (Fs_18.7-20.3Wo_2.3-6.4, FeO/MnO=27±1, n=12); Ca-pyroxene rims: Fs_15.4±0.4Wo_28.9±1.2 (Fs_14.6-15.8Wo_27.2-31.0, FeO/MnO=22±1, n=6); mesostasis (wt%): SiO₂: 66.1±1.0, Al₂O₃: 17.8±0.4, Na₂O: 3.50±0.24, K₂O: 0.70±0.01, CaO: 3.24±0.16, MgO: 0.77±0.04, FeO: 2.69±0.09, TiO₂: 0.56±0.04, Cr₂O₃: 0.05±0.03, MnO: 0.09±0.02, n=6

Classification: Ordinary chondrite-melt rock. L type based on olivine composition and magnetic susceptibility.