NWA 2627

Found 2004
Achondrite (winonaite, anomalous)

A 68g mostly crusted, partial stone was purchased in Erfoud in October 2004. Description and classification (T. Bunch and J. Wittke, NAU): re-crystallized into polygonal and subhedral grains with the exception of large orthopyroxene grains (up to 3 mm) that poikilitically enclose olivine; heavily fractured, variable grain size, and heterogeneous distribution of phases.  Modal analyses (vol. %): orthopyroxene, 44; olivine, 41; FeS, 6; metal (and Fe-oxides), 5; plagioclase, 3 and minor merrilite, Ca-pyroxene and chromite. All silicates have very homogeneous compositions; olivine, Fa13.1, FeO/MnO = 26; orthopyroxene, Fs12.2 Wo2.7, FeO/MnO = 13.9; plagioclase, An21.9; metal, Ni = 6.7 wt % Ni. Oxygen isotope analyses are consistent with winonaites, mineralogy and mineral compositions are more consistent with lodranite assemblages. Weathering grade is W2/3 with ferric Fe staining; shock level is S2. Specimens; type example, 13.7 g, NAU: main mass, Strope/Farmer.

This is a very rare meteorite, resembling the Lodranites more than the Winonaite. Only the Oxygen isotopes plot in the Winonaite field. This is a new one, and certainly one for the type collectors.

NWA 2627, 1: 2.071 gram slice. $600.00	NWA 2627 1,  close-up photo showing the crystal structure better.
NWA 2627, 2: 0.6848 gram partslice. SOLD	NWA 2627, close-up photo showing the crystal structure better.
NWA 2627, 3: 0.3012 gram partslice. $100.00	NWA 2627, 4: 0.1430 gram partslice. $50.00
NWA 2627, 5: 2.90 gram slice. $800.00	NWA 2627, 5, another close-up photo showing the crystal structure better.
NWA 2627, 6: 3.66 gram slice. $900.00