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Northwest Africa 6065
Basic information Name: Northwest Africa 6065
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 6065
Observed fall: No
Year found: 2009
Country: (Northwest Africa)
Mass:help 883 g
Classification
  history:
Meteoritical Bulletin:  MB 106  (2018)  Achondrite-ung
Recommended:  Achondrite-ung    [explanation]

This is 1 of 138 approved meteorites classified as Achondrite-ung.   [show all]
Search for other: Achondrites, Ungrouped achondrites
Comments: Approved 31 Jul 2017
Writeuphelp
Writeup from MB 106:

Northwest Africa 6065 (NWA 6065)

(Northwest Africa)

Purchased: 2009

Classification: Ungrouped achondrite

History: The meteorite was bought in 2009 from a local meteorite dealer in Erfoud, Morocco.

Physical characteristics: A single brownish individual without fusion crust was purchased.

Petrography: The meteorite shows an equilibrium texture dominantly composed of 200-600 µm sized olivine (77 vol%) and Ca-pyroxene (10 vol%) grains that often share 120° grain boundaries. Minor phases include Cl-rich apatite, chromite, troilite, and FeNi metal which is often altered to iron hydroxides. Neither low-Ca pyroxene nor plagioclase has been found in the two thin sections studied.

Geochemistry: olivine: Fs29.4±0.2 (Fs29.2-29.7, n=17, FeO/MnO=57); Ca-pyroxene: Fs9.7±0.7Wo44.5±0.5 (Fs9.3-12.3Wo43.5-44.9, n=18, FeO/MnO=26, Cr2O3 = 0.74wt%, Al2O3 = 0.71wt%); oxygen isotopes (R. Tanaka and D. Rumble, Institute for Study of the Earth’s Interior, OkaU): δ18O=5.558, 5.598; δ17O=2.830, 2.873; Δ17O= -0.095, -0.073 (all per mil).

Classification: Achondrite, ungrouped (brachinite-like). Pairing with NWA 5400 seems likely.

Data from:
  MB106
  Table 0
  Line 0:
Place of purchase:Erfoud, Morocco
Date:P 2009
Mass (g):883
Pieces:1
Class:Achondrite-ung
Shock stage:low
Weathering grade:moderate
Fayalite (mol%):29.4±0.2 (29.2-29.7, n=17)
Ferrosilite (mol%):9.7±0.7 (9.3-12.3, n=18)
Wollastonite (mol%):44.5±0.5 (43.5-44.9, n=18)
Classifier:A. Greshake, MNB
Type spec mass (g):22.4
Type spec location:MNB
Main mass:Beat Booz
Comments:Submitted by Ansgar Greshake
Plots: O isotopes:  
Institutions
   and collections		 MNB: Museum für Naturkunde, Invalidenstraße 43, D-10115 Berlin, Germany (institutional address; updated 24 Dec 2011)
OkaU: Institute for Study of the Earth's Interior, Okayama University, Misasa Tottori 682-0193, Japan (institutional address)
Catalogs:
References: Published in Gattacceca J., Bouvier A., Grossman J., Metzler K., and Uehara M. (2019) Meteoritical Bulletin, no. 106. Meteorit. Planet. Sci. 54 in press.
Find references in NASA ADS:
Find references in Google Scholar:
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 9368 approved meteorites from (Northwest Africa) (plus 1875 unapproved names)

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