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Northwest Africa 7097
Basic information Name: Northwest Africa 7097
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 7097
Observed fall: No
Year found: 2011
Country: (Northwest Africa)
Mass:help 26 g
Classification
  history:
Meteoritical Bulletin:  MB 100  (2012)  Eucrite-pmict
Recommended:  Eucrite-pmict    [explanation]

This is 1 of 391 approved meteorites classified as Eucrite-pmict.   [show all]
Search for other: Achondrites, Eucrites, and HED achondrites
Comments: Approved 31 May 2012
Writeuphelp
Writeup from MB 100:

Northwest Africa 7097 (NWA 7097)

(Northwest Africa)

Purchased: 2011

Classification: HED achondrite (Eucrite, polymict)

Petrography: Moderately weathered polymict breccia consisting of fine-grained and more coarse-grained basaltic lithologies, impact melt fragments, and mineral clasts set in a finer grained brecciated groundmass of dominantly calcic plagioclase and exsolved Ca-pyroxene. Minor phases include silica polymorphs, troilite, ilmenite and Ti-rich chromite.

Geochemistry: low Ca-pyroxene Fs45.6 (29.2-63.6) Wo7.5 (1.9-12.1), Fe/Mn=29-32; high Ca-pyroxene Fs32.8 (32.0-33.6) Wo37.2 (36.4-37.8), Fe/Mn=29-30; plagioclase An89.1 (82.2-92.5). The low-Ca pyroxene Fs ranges may reflect both diogenite and eucrite components.

Data from:
  MB100
  Table 1
  Line 1625:
Place of purchase:Erfoud, Morocco
Date:P 2011
Mass (g):26
Pieces:1
Class:Eucrite-pmict
Shock stage:moderate
Weathering grade:moderate
Ferrosilite (mol%):29.2-63.6; 32-33.6
Wollastonite (mol%):1.9-12.1; 36.4-37.8
Classifier:A, Greshake, MNB
Type spec mass (g):6.4
Type spec location:MNB
Main mass:H. Strufe
Comments:.; submitted by Ansgar Greshake
Institutions
   and collections		 MNB: Museum für Naturkunde, Invalidenstraße 43, D-10115 Berlin, Germany (institutional address; updated 24 Dec 2011)
Catalogs:
References: Published in Meteoritical Bulletin, no. 100, MAPS 49, E1-E101 (2014)
Find references in NASA ADS:
Find references in Google Scholar:
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 8890 approved meteorites from (Northwest Africa) (plus 1871 unapproved names)

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