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Northwest Africa 4545
Basic information Name: Northwest Africa 4545
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 4545
Observed fall: No
Year found: 2006
Country: Algeria
Mass:help 119 g
Classification
  history:
Meteoritical Bulletin:  MB 93  (2008)  R4
Recommended:  R4    [explanation]

This is 1 of 58 approved meteorites classified as R4.   [show all]
Search for other: Rumuruti chondrites, Rumuruti chondrites (type 4-7)
Comments: Approved 1 Jan 2008
Revised 4 Aug 2008: final writeup
Writeuphelp
Writeup from MB 93:

Northwest Africa 4545

Algeria

Find: 2006

Rumuruti chondrite (R4)

History and Physical characteristics: The meteorite was recovered in the southern Algerian desert in March 2006 and purchased in Munich, Germany, in October 2006 by Michael Farmer. It is a greenish gray, 119 g stone covered with a very fresh black fusion crust.

Petrography: (T. Bunch and J. Wittke, NAU) Millimeter-wide cataclastic veins are pervasive throughout the stone. Many small (<0.2 mm) clusters of pyrrhotite, pentlandite, and high-silica glass intergrowths occur in the matrix. A few of the small chondrules are rimmed by sulfides.

Mineral compositions and Geochemistry: Olivine (Fa37.5; FeO/MnO = 77-83), Ca-pyroxene (Fs11.8Wo44.6), FeS (Ni = 2.32 wt%), glass (SiO2 = 71.1 wt%, Al2O3 = 21.4 wt%, Na2O = 6.4 wt%; CaO = 1.43 wt%; FeO = 1.72 wt%).

Classification: Rumuruti chondrite (R4); minimal shock, almost no weathering.

Type specimens: A 21 g sample is on deposit at NAU. MFarmer is the main mass holder.

Submitted by: T. Bunch, NAU.

Data from:
  MB93
  Table 2
  Line 61:
Place of purchase:Algeria/Munich, Germany
Date:Mar-06/Oct-06
Mass (g):119
Pieces:1
Class:R4
Type spec mass (g):21
Institutions
   and collections
NAU: Geology, Bldg 12 Knoles Dr Northern Arizona University, Flagstaff, AZ 86011, United States; Website (institutional address; updated 12 Apr 2012)
MFarmer: Michael Farmer, P.O. Box 86059, Tucson, AZ 85754-6059, United States; Website (private address)
Catalogs:
References: Published in Meteoritical Bulletin, no. 93, MAPS 43, 571-632 (2008)
Find references in NASA ADS:
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Geography:

Algeria
Coordinates:Unknown.

Statistics:
     This is 1 of 979 approved meteorites from Algeria (plus 26 unapproved names) (plus 4 impact craters)

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