Vicencia (LL3.2) SOLD OUT

A single 1.5kg stone fell from the sky on September 21st, 2013 almost striking the finder near Vicencia, Brazil. The slice available for sale comes from Mr. Andre Moutinho.

From the Meteoritical Bulletin:

History: Fell, September 21, 2013, ~15:00 hours local time (18:00 UTC), village Borracha near Vicência, Pernambuco, Brazil. Landed

Physical characteristics: Single stone of 1.547 kg and ~13.7 × 12 × 8.5 cm. Pronounced chondritic texture, with abundant chondrules up to ~7 mm in diameter. Bulk density 3.13 g/cm3; grain density 3.28 g/cm3, porosity of 4.75%.

Petrography: Unshocked (S1), well-developed chondritic texture and mineralogy and mineral compositions of a highly unequilibrated ordinary chondrite. Major minerals olivine (Fa0.4-58.9), low-Ca pyroxene (Fs0.4-29.8). Mean Cr2O3 ferroan olivine 0.14±0.09 wt.%, n=115.

Geochemistry: R. Greenwood and I. Franchi, OU. Bulk oxygen isotopic composition is δ17O = 3.768 ± 0.042‰, δ18O = 5.359 ± 0.042‰, Δ17O = 0.981 ±0.020 ‰.

Classification: LL group based on chondrule mean apparent diameter (0.9 mm), bulk oxygen isotopic composition, content of metallic Fe,Ni (1.8 vol%), Co content of kamacite (1.73 wt%), ratios of metallic FeO/total iron (0.105) vs. total Fe/Mg (1.164), and of Ni/Mg (0.057) vs. total Fe/Mg. Petrologic type 3.2 classification is based on chondritic texture, plot of the standard deviation (0.09) vs the mean Cr2O3 content (0.14 wt. %) of ferroan olivine, trapped 132Xe of ~32×10-10cm3STP/g consistent with petrologic type 3.2.

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