Meteoritical Bulletin: Entry for Northwest Africa 10255

header

MetSoc Home Publications Contacts

Search the Meteoritical Bulletin Database
Last update: 15 Apr 2024
Search for:	Search type:	Search limits:	Display:	Publication:
Names Text Places Classes Years	Contains Starts with Exact Sounds like	NonAntarctic Falls Non-NWAs Has strewnfield		What's new in the last:
Include past classifications in search		Has photo	Limit to approved meteorite names
Search text:

Northwest Africa 10255

Basic information

Name: Northwest Africa 10255
This is an OFFICIAL meteorite name.
Abbreviation: NWA 10255
Observed fall: No
Year found: 2015
Country: (Northwest Africa)
Mass: 1995 g

Classification
history:

Meteoritical Bulletin:	MB 104	(2015)	LL3
Recommended:			LL3 [explanation]

This is 1 of 487 approved meteorites classified as LL3. [show all]
Search for other: LL chondrites, LL chondrites (type 3), Ordinary chondrites, and Ordinary chondrites (type 3)

Comments:

Approved 28 Aug 2015

Writeup

help

Writeup from MB 104:

Northwest Africa 10255 (NWA 10255)

(Northwest Aftica)

Purchased: 2015 Feb

Classification: Ordinary chondrite (LL3)

History: Purchased by Aerolite Meteorites

Physical characteristics: Single stone, saw cut and polished slices reveal many densely packed chondrules of variable size set in a dark brown groundmass. Largest chondrules up to 10 mm in diameter.

Petrography: (C. Agee, UNM) Microprobe examination of a polished mount shows numerous unequilibrated chondrules, many with porphyritic, igneous-zoned olivines and pyroxenes. Apparent mean chondrule size 850±450 μm (in microprobe section), n=25. A few very fine-grained plagioclase grains were observed. Fe-Ni metal, troilite, and chromite are present.

Geochemistry: (C. Agee and N. Muttik, UNM) Olivine Fa_24.2±8.3, Fe/Mn=63±25, Cr₂O₃=0.07±0.09 wt%, n=30, low-Ca pyroxene Fs_11.1±8.4Wo_0.5±0.3, Fe/Mn=20±12, n=12.

Classification: Ordinary chondrite LL3, estimated type 3.4 based on mean values and 1-sigma of Fa and Fs.

Specimens: 31.47 g including a probe mount on deposit at UNM, Aerolite Meteorites holds the main mass.

Data from:
  MB104
  Table 0
  Line 0:

Place of purchase:	Morocco
Date:	P 2015 Feb
Mass (g):	1995.1
Pieces:	1
Class:	LL3
Shock stage:	S2
Weathering grade:	W1
Fayalite (mol%):	24.2±8.3
Ferrosilite (mol%):	11.1±8.4
Wollastonite (mol%):	0.5±0.3
Classifier:	C. Agee, UNM
Type spec mass (g):	31.47
Type spec location:	UNM
Main mass:	Aerolite Meteorites Inc.
Comments:	AE-2; submitted by C. Agee

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)

Catalogs:

References:

Published in Meteoritical Bulletin, no. 104, MAPS 52, 2284, Octover 2017, http://onlinelibrary.wiley.com/doi/10.1111/maps.12930/full

Find references in NASA ADS:
Find references in Google Scholar:

Geography:

Coordinates:

Unknown.

Statistics:
This is 1 of 9699 approved meteorites from (Northwest Africa) (plus 1854 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.

Direct link to this page