NWA 12821 EL3 Chondrite Meteorites for Sale
Location: Sahara Desert, exact location unknown.
Found: 2019.
Classification: Enstatite chondrite (EHL)
Description: History: Purchased by Habib Naji, Morocco, 6 Jan 2019, from a nomad who reportedly found the meteorite. Physical characteristics: Single stone with fusion crust, outlines of small chondrules are visible on the surface. Saw-cut surface reveals abundant bright metal/sulfide grains making up 15-20% of this meteorite. Numerous small chondrules are present in a dark gray matrix. Petrography: (C. Agee, UNM) Microprobe examination of a polished mount shows many distinct, well formed chondrules with dominant enstatite and lesser forsterite, apparent mean diameter 375±200 μm (n=18). Some chondrules are mantled with metal or contain many fine-grained metal/sulfide inclusions. Very fine-grained metal is dispersed throughout the matrix, numerous larger metal grains up to 500 μm are ubiquitous. No feldspar was detected. Geochemistry: (C. Agee, UNM) Forsterite Fa0.3±0.2, n=20; enstatite Fs1.6±1.8Wo0.7±0.9, Fe/Mn=9±3 n=12; oldhamite Ca=52.9, Mn=1.12, S=43.2 (all wt%), n=3; Cr-bearing troilite Cr=2.7±1. (wt%), n=5; kamacite Ni=6.6±0.2, Si=1.32±0.02, n=10. Oxygen isotopes (K. Ziegler, UNM): 8 acid-washed fragments analyzed by laser fluorination gave, respectively δ18O= 5.892, 5.846, 6.049, 6.023, 6.068, 6.091, 6.402, 6.081; δ17O= 3.045, 3.119, 3.359, 3.212, 3.216, 3.168, 3.367, 3.254; Δ17O= -0.065, 0.032, 0.166, 0.032, 0.012, -0.048, -0.013, 0.043 (linearized, all per mil, TFL slope=0.528).
Note: This is the freshest EL3 available, that I am aware of.
Link to Meteoritical Bulletin Database.