Villa Regina (IIIAB, Om)
sc 24.78 g
|This is a beautiful, rare iron from the Rio Negro region of Patagonia. The provisional name for this
IIIAB octahedrite is 'Villa Regina'. Villa Regina has a unique composition with its closest known
compositional "relative" being the Russian iron Ssyromolotovo. The TKW of Villa Regina is only
5.03kg before cutting, (only about 3.7kg after cutting) meaning that there is not very much of this
beautiful iron to go around. This meteorite has an interesting heat altered zone extending about 2mm in
from its crust. UCLA's Dr. Wasson describes this meteorite as follows : "Observations based on
37X26mm slab, 4 to 6mm thick, etched on all cut surfaces. Om; b.w 0.8±0.1mm. Heat altered zone
~2mm wide on outer surfaces. Small FeS nodules, only 8mm2 in a total area of about 2100mm2.
No schreibersite was identified. Structure is deformed and fractured, perhaps by impacts in space.
Weathering is minor."The final elemental composition, as determined by replicate analysis at UCLA
is: Cr 139µg/g , Co 5.01mg/g, Ni 79.3mg/g, Cu 164µg/g, Ga 19.3µg/g, Ge <70µg/g,
As 4.3µg/g, W 1.06µg/g, Ir 4.32µg/g, Pt 13.9µg/g, Au 0.598µg/g.
|Meteorites Collection 2002–2016 © Jan Woreczko & Wadi||
Page update: 2016-05-08 21:37