header
  MetSoc Home            Publications            Contacts  
Search the Meteoritical Bulletin Database
Last update: 14 Oct 2020
Search for: Search type: Search limits: Display: Publication:
Names
Text help
Places
Classes
Years
Contains
Starts with
Exact
Sounds like
NonAntarctic
Falls  Non-NWAs
What's new
  in the last:
Include past classifications in search
Limit to approved meteorite names
Search text:  
Northwest Africa 4541
Basic information Name: Northwest Africa 4541
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 4541
Observed fall: No
Year found: 2006
Country: Algeria
Mass:help 168 g
Classification
  history:
Meteoritical Bulletin:  MB 93  (2008)  Eucrite-mmict
Recommended:  Eucrite-mmict    [explanation]

This is 1 of 238 approved meteorites classified as Eucrite-mmict.   [show all]
Search for other: Achondrites, Eucrites, and HED achondrites
Comments: Approved 1 Jan 2008
Revised 4 Aug 2008: final writeup
Writeuphelp
Writeup from MB 93:

Northwest Africa 4541

Algeria

Find: 2006

Achondrite (eucrite, basaltic, monomict breccia)

History and Physical characteristics: Found in Algeria and purchased from a dealer in Erfoud, Morocco, by S. Turecki in 2006. The single 168 g stone has a fresh black fusion crust.

Petrography: (J. Wittke and T. Bunch, NAU) Fine-grained (<0.35 mm), subophitic basalt breccia, dominated by subrounded clasts that are set in a cataclastic matrix.

Mineral compositions and Geochemistry: Pigeonite (Fe54.7-59.4Wo4.4-7.3; FeO/MnO = 31-34 g/g), augite (Fs38Wo46.5), plagioclase (An94.3), chromite (Cr/(Cr + Al) = 0.85), with minor ilmenite and silica.

Classification: Achondrite (eucritic, basaltic, monomict breccia), minimal to moderate shock, minimal weathering.

Type specimens: A 20 g sample is on deposit at NAU. Turecki is the main mass holder.

Submitted by: T. Bunch, NAU.

Data from:
  MB93
  Table 2
  Line 60:
Place of purchase:Erfoud, Morocco
Date:2006
Mass (g):168
Pieces:1
Class:Euc
Type spec mass (g):20
Institutions
   and collections
NAU: Geology, Bldg 12 Knoles Dr Northern Arizona University, Flagstaff, AZ 86011, United States; Website (institutional address; updated 12 Apr 2012)
Turecki: Stan Turecki, 5618 Regis Ave., Port Richey, Florida, United States (private address; updated 28 Dec 2010)
Catalogs:
References: Published in Meteoritical Bulletin, no. 93, MAPS 43, 571-632 (2008)
Find references in NASA ADS:
Find references in Google Scholar:
Geography:

Algeria
Coordinates:Unknown.

Statistics:
     This is 1 of 1017 approved meteorites from Algeria (plus 26 unapproved names) (plus 4 impact craters)

Direct link to this page