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NWA 5073   contributed by Jean-Alix Barrat   MetBul Link

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View all entries for   Meteorite (1)   Jean-Alix Barrat (1)


See below.   Eucrite

TKW 185 grams. Fall not observed. Found 2007.

The contributor was one of the authors of an exhaustive article in Meteoritics and Planetary Science concerning the thermal history of this meteorite.

Jean-Alix writes:
The chemical map (iron) of a polished section of NWA 5073. The colors of the vertical scale indicate the iron concentration. The unit is arbitrary (the image was not calibrated). This image was not published.

This meteorite is an unbrecciated eucrite that displays veins of iron-rich olivine. The origin of these veins was the focus of a few studies. These olivines could have been formed by hot aqueous fluids. (pyroxene is blue or green depending; olivine is orange; plagioclase is black).


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This Month

2 pictures in the Queue
Herbert
 3/21/2017 5:37:40 PM		 The principal author of this paper, Dr. Julia Walter-Roszjar, just gave a talk at our local astronomy club yesterday. What a nice coincide! :)
MexicoDoug
 3/21/2017 3:08:23 PM		 Interesting and REALLY an exhaustive paper! Some basic conclusions published in the ref, "On the basis of its oxygen isotope composition ... deduce that NWA 5073 is a normal member of the HED suite of achondrites ... NWA 5073 resembles some other Stannern-trend eucrite finds from the Sahara, namely NWA 1000, NWA 2061, and NWA 4523. However, these four samples are unlikely fall-paired ..." Thanks kindly Jean-Alix, for sharing your enthusiasm and experience!
John Divelbiss
 3/21/2017 12:29:27 PM		 a photo of this beautiful material is shown in the extensive and interesting article referenced. the Stannern trend has a very "basaltic" look to it. Cool colored photo above!
 

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