On Offer: 8.19 gram Eucrite Slice (Monomict Basaltic Breccia) I NWA 12929

Dimensions: 46 mm x 36 mm x 3 mm

Type: Eucrite, Monomict Basaltic Breccia, equilibrated.

Origin: Northwest Africa

Official name: NWA 12929

Description: 8.19 gram polished on one side, slice of equilibrated eucrite m onomict basaltic breccia, NWA 12929 .

What you get: 8.19 gram NWA 12929 Eucrite meteorite specimen as shown and signed Certificate of Authenticity.

I offer a 100% no questions asked 30 day .

SEE OFFICIAL METEORITICAL SOCIETY ENTRY BELOW

Northwest Africa 12929Basic informationName: Northwest Africa 12929
This is an OFFICIAL meteorite name.
Abbreviation: NWA 12929
Observed fall: No
Year found: 2016
Country: (Northwest Africa)
Mass: 23.7 kg
Classification
history:Meteoritical Bulletin: MB 108 (2020) Eucrite-mmictRecommended: Eucrite-mmict [explanation]
This is 1 of 272 approved meteorites classified as Eucrite-mmict. [show all]
Search for other: Achondrites, Eucrites, and HED achondrites
Comments:Approved 21 Nov 2019Writeup
Writeup from MB 108:

Northwest Africa 12929 (NWA 12929)

(Northwest Africa)

Purchased: 2016

Classification: HED achondrite (Eucrite, monomict)

History: Purchased Dec. 2018 by Dustin Dickens in Morocco from anonymous dealer.

Physical characteristics: Many identically appearing pieces, desert weathered exterior, broken surface reveals a dark, fine grained interior.

Petrography: (C. Agee, UNM) Microprobe examination of a polished mount shows mild brecciation with approximately 60% pyroxene and 35% plagioclase. Many pyroxenes have exsolution lamellae. Minor silica and troilite observed. Shock melt veins are present.

Geochemistry: (C. Agee, UNM) Low-Ca pyroxene Fs 61.6 1.8Wo 3.3 2.4, Fe/Mn=32 0, n=9; high-Ca pyroxene Fs 36.7 9.5Wo 33.4 10.9, Fe/Mn=31 0, n=4; plagioclase An 89.4 3.1, n=7.

Classification: Monomict basaltic eucrite, equilibrated.

Data from:
MB108
Table 0
Line 0:Place of purchase:MauritaniaDate:P 2016Mass (g):23700Pieces:ManyClass:Eucrite-mmictShock stage:highWeathering grade:moderateFerrosilite (mol%):61.6 1.8, 36.7 9.5Wollastonite (mol%):3.3 2.4, 33.4 10.9Classifier:C. Agee, UNMType spec mass (g):23.8Type spec location:UNMMain mass:Dustin DickensComments:Field name DD-54; submitted by C. Agee, UNMInstitutions
and collectionsUNM: Institute of Meteoritics MSC03 2050 University of Mexico Albuquerque NM 87131-1126 USA, United States; Website (institutional address; updated 12 Feb 2015)
<
Product Attributes:

Featured Refinements: Meteorite Slice

Weight (lbs.): 0.50 lb

Length (in.): 12

Width (in.): 10

Height (in.): 3