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On Offer: 22.46 gram Eucrite Monomict Complete Slice I NWA 8555

Dimensions: 71.06mm x 56.05mm x 2.43mm

Type: HED achondrite (Eucrite, monomict)

Origin: Morocco

Official name: NWA 8555

Description: 22.46 gram complete, polished on one side, slice of monomict eucrite NWA 8555, excellent surface area per gram.

What you get: 22.46 gram NWA 8555 Eucrite Meteorite Specimen as Shown & signed Certificate of Authenticity.

I offer a 100% no questions asked 30 day return policy.

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Northwest Africa 8555

Basic information

Name: Northwest Africa 8555
This is an OFFICIAL meteorite name.
Abbreviation: NWA 8555
Observed fall: No
Year found: 2013
Country: (Northwest Africa)
Mass: 2.92 kg

Classification
history:

Recommended:

Eucrite-mmict [explanation]

This is 1 of 187 approved meteorites classified as Eucrite-mmict. [show all]
Search for other: Achondrites,Eucrites, and HED achondrites

Comments:

Approved 18 Oct 2014

Writeup

Writeup from MB 103:

Northwest Africa 8555 (NWA 8555)

(Northwest Africa)

Purchased: 2013

Classification: HED achondrite (Eucrite, monomict)

History: Purchased by Brahim Tahiri from a Moroccan hunter and sent to his partner Sean Tutorow for classification, April, 2013.

Physical characteristics: Two matching stones, 1729 g and 1198 g. Irregular weathered exterior. Saw cut reveals a breccia with tan lithic clasts up to 1 cm set in a dark-gray matrix.

Petrography: (C. Agee, UNM) Microprobe examination of a polished mount show basaltic eucrite clasts cross-cut by shock melt veins, pyroxenes show exsolution lamellae. Ubiquitous chromite, ilmenite, and silica, some barite found. Moderate weathering.

Geochemistry: (C. Agee and N. Muttik, UNM) Low-Ca pyroxene Fs_60.7±2.2Wo_4.5±2.4, Fe/Mn=33±1, n=12; high-Ca pyroxene Fs_29.3±1.5Wo_41.1±1.6, Fe/Mn=33±1, n=12; plagioclase An_89.0±1.2, n=8.

Classification: Achondrite (monomict eucrite)

Specimens: 59.78 g including a probe mount on deposit at UNM, Sean Tutorow holds the main mass.

Data from:
  MB103
  Table 0
  Line 0:

Place of purchase:	Morocco
Date:	P 2013
Mass (g):	2923.78
Pieces:	1
Class:	Eucrite-mmict
Weathering grade:	moderate
Classifier:	C. Agee, UNM
Type spec mass (g):	59.78
Type spec location:	UNM
Main mass:	Sean Tutorow
Comments:	Field name G565; submitted by C. Agee, UNM

Institutions
and collections

UNM: Institute of Meteoritics MSC03 2050 University of New Mexico Albuquerque NM 87131-1126 USA, United States; Website (institutional address; updated 12 Feb 2015)