Meteorite NWA 15788 HED ACHONDRITE DIOGENITE POLYMICT BRECCIA METEORITE 75 GRAM for Sale

Meteorite NWA 15788 HED ACHONDRITE DIOGENITE POLYMICT BRECCIA METEORITE 75 GRAM For Sale

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Meteorite NWA 15788 HED ACHONDRITE DIOGENITE POLYMICT BRECCIA METEORITE 75 GRAM:
$592.00

NWA 15788ACHONDRITE HEDDIOGENITE POLYMICT BRECCIAFOUND IN NOVEMBER 2022IN KIDAL REGION MALI74 GRAM GUARANTEED AUTHENTICITY
YOU ARE BUYING A 100% GUARANTEED AUTHENTIC METEORITECOMBINED WITH A SIGNED CERTIFICATE OF AUTHENTICITY

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OFFICIAL CLASSIFICATION DATA SOURCE:
THE METEORITICAL SOCIETY
INTERNATIONAL SOCIETY FOR METEORITICS AND PLANETARY SCIENCE
LUNAR AND PLANETARY INSTITUTE
METEORITICAL BULLETIN DATABASMetSoc HomePublicationsContactsNorthwest Africa 15788Basic informationName:Northwest Africa 15788
This is an OFFICIAL meteorite name.
Abbreviation:NWA 15788
Observed fall:No
Year found:2022
Country:(Northwest Africa)
Mass:3.91 is 1 of 58 approved meteorites classified as Diogenite-pm.
Comments:Approved 1 Apr 2023WriteupWriteup from MB 112:

Northwest Africa 15788(NWA 15788)

(Northwest Africa)

Purchased: 2022 Nov

Classification: HED achondrite (Diogenite, polymict)

History: Many similar-appearing stones (total weight 3912 g) were found together near Kidal, Mali in November and December 2022 and purchased by Mbark Arjdal in November 2022 and February 2023.

Petrography: (A. Irving,UWS, and P. Carpenter,WUSL) Breccia composed predominantly crystalline debris derived from diogenites (zoned low-Ca pyroxene, anorthite and Ti-free chromite) with <10 vol.% of eucritic material (as grains of exsolved pigeonite, labradorite, ilmenite and symplectitic intergrowths composed of silica polymorph+fayalite+hedenbergite). Minor kamacite and secondary Fe oxide are also present.

Geochemistry: Orthopyroxene cores (Fs23.2-26.5Wo1.8, FeO/MnO = 31-34, N = 2), pigeonite rims (Fs33.6-34.8Wo8.2-6.8, FeO/MnO = 28-30, N = 2), ferroan pigeonite rim (Fs53.3Wo15.7, FeO/MnO = 35), subcalcic augite (Fs44.0Wo25.5, FeO/MnO = 31), low-Ca pyroxene hosts (Fs55.3-63.4Wo3.9-5.2; Fs39.0Wo5.1; FeO/MnO = 30-34, N = 3), augite exsolution lamellae (Fs28.8-28.9Wo40.5-41.6; Fs19.3Wo41.3; FeO/MnO = 29-33, N = 3), hedenbergite (Fs58.7Wo33.1, FeO/MnO = 42), fayalite (Fs82.7, FeO/MnO = 43), labradorite (An65.0-69.9Or1.4-1.7, N = 2), anorthite (An93.6-94.6Or0.2, N = 2).

Classification: Diogenite (polymict breccia).

Specimens: 25.9 g including one polished thin section atUWB; remainder with Mr. M. Arjdal.

Data from:
MB112
Table 0
Line 0:Place of purchase:MaliDate:P 2022 NovMass stage:lowWeathering grade:lowFayalite (mol%):82.7Ferrosilite (mol%):23.2-26.5; 33.6-34.8; 55.3-63.4; 28.6-28.9Wollastonite (mol%):1.8±0.0; 8.2-6.8; 3.9-5.2; 40.5-41.6Classifier:(A. Irving, UWS, and P. Carpenter, WUSL)Type spec mass (g):25.9Type spec location:UWBMain mass:M. ArjdalComments:Work name Arj ZM 840; submitted by A. IrvingInstitutions
and collectionsUWS: University of Washington, Department of Earth and Space Sciences, 70 Johnson Hall, Seattle, WA 98195, United States (institutional address; updated 15 Jan 2012)
WUSL: Washington Univ., One Brookings Drive, St. Louis, MO 63130, United States (institutional address; updated 17 Oct 2011)
UWB: University of Washington, Box 353010 Seattle, WA 98195, United States (institutional address; updated 27 Jul 2012)
Catalogs:References:Published in Meteoritical Bulletin, no. 112, in preparation (2023)
Find references in NASA ADS:Find references in Google is 1 of 9042 approved meteorites from(Northwest Africa)(plus 1870 unapproved names)
Also see:This lists the most popular meteorites among people who looked up this meteorite.Revision
history:This lists important revisions made to data for this record.

Diogenite-pmmeans:

\"Anachondritefrom thediogenitegroup, which is a polymict breccia.\"

The highlighted words are defined as follows:

achondrite: A stony meteorite that lacks chondrules and originated on a differentiated parent body.

diogenite: Diogenites are an abundant type of achondrite, linked by geochemical traits such as oxygen isotopic ratios and certain elemental ratios, of which Fe/Mn is the most widely cited. The dominant mineral in diogenites is orthopyroxene. The diogenites are strongly linked with two other achondrite groups: eucrites and howardites; the three groups are collectively known as HED meteorites and may come from asteroid 4 Vesta.