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NWA 725   contributed by Roberto Vargas, IMCA 5746   MetBul Link


Roll Overs:     #1   #2    


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View all entries for   Meteorite (1)   Roberto Vargas (46)


37.1 grams.   Acapulcoite

TKW 3.82 kg. Fall not observed. Found 2000.

 


Roberto writes:
A Tucson 2020 acquisition from Bruno Fectay. This beauty is classified as an acapulcoite in MetBul, but research shows that it is actually a winonaite with a fine grained texture (Zeng et al, 2019). Either way, it is an awesome meteorite and I'm happy to add it to the collection!

Here is a link to "The layered structure model for winonaite parent asteroid implicated by textural and mineralogical diversity" published 2 April 2019 in Earth, Planets and Space.
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#1

#2
Found at the arrow (green or red) on the map below
 


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Bernd Pauli
 2/26/2020 3:02:50 PM		 HIDAKA Y. et al. (2019) Siderophile element characteristics of acapulcoite-lodranites and winonaites: Implications for the early differentiation processes of their parent bodies (MAPS 54-05, 2019, 1153-1166, p. 1159): ... NWA 725 is possibly related to the chondritic projectile which caused breakup and reassembly of the winonaite*IAB parent body.
John Divelbiss
 2/26/2020 1:17:03 PM		 Read the 2019 article, and it is sorta-suggesting this was once W3 material...for least altered winonaite chondritic material on the outside of the parent body. So it is settled ?? :>
John Divelbiss
 2/26/2020 10:08:26 AM		 nice pics Roberto. This particular material is and has been confounding. It has chondrules...and more than a few relicts. I still look at my thin section and I see a chondrite. Oh well...it likely once was ??
 

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