Meteoritical Bulletin: Entry for Northwest Africa 2708

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Northwest Africa 2708

Basic information

Name: Northwest Africa 2708
This is an OFFICIAL meteorite name.
Abbreviation: NWA 2708
Observed fall: No
Year found: 2005
Country: Morocco
Mass: 528 g

Classification
history:

Meteoritical Bulletin:	MB 90	(2006)	CK4
Recommended:			CK4 [explanation]

This is 1 of 121 approved meteorites classified as CK4. [show all]
Search for other: Carbonaceous chondrites, Carbonaceous chondrites (equilibrated), CK chondrites, CK chondrites (type 4-6), and CV-CK clan chondrites

Comments:

Approved 3 Feb 2006

Writeup

Writeup from MB 90:

Northwest Africa 2708

Morocco

Find: 2004

Carbonaceous chondrite (CK4)

History: A single partially crusted stone of 528 g was purchased in Erfoud, Morocco, in January 2005.

Petrography: (J. Wittke and T. Bunch, NAU) Specimen contains rare, partially altered CAI; melt clasts and chondrules with fairly sharp margin/matrix boundaries.

Geochemistry: Matrix olivine (Fa_29.7±2.7), magnetite (Cr₂O₃ = 4.6, Al₂O₃ = 2.19 [both wt%]), poorly crystallized plagioclase (An_78.4), pentlandite (Co = 1.87 wt%). Chondrules: Olivine (Fa_30.6±1.95), Ca-rich pyroxene (Fs_43.5Wo_48.7), magnetite (Cr₂O₃ = 3.2, Al₂O₃ = 1.0 [both wt%]). Magnetite in melt clasts contains Ni-bearing, exsolved ilmenite.

Classification: Carbonaceous chondrite (CK4); host = low shock; clasts = moderate to highly shocked, moderate weathering.

Specimens: A 20.3 g type specimen is on deposit at NAU. GHupé holds the main mass.

Data from:
  MB90
  Table 2
  Line 52:

Place of purchase:	Unknown
Date:	2004
Mass (g):	528
Pieces:	1
Class:	CK4
Shock stage:	medium-high
Weathering grade:	moderate
Type spec mass (g):	20.3

Institutions
and collections

NAU: Geology, Bldg 12 Knoles Dr Northern Arizona University, Flagstaff, AZ 86011, United States; Website (institutional address; updated 12 Apr 2012)
GHupé: Gregory M. Hupé, 9003 Placid Lakes Blvd., Lake Placid, FL 33852, United States; Website (private address)

Catalogs:

References:

Published in Meteoritical Bulletin, no. 90, MAPS 41, 1383-1418 (2006)

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Photos:

Credit	Photos
Photos from the Encyclopedia of Meteorites:
The Hupe Collection
Photos uploaded by members of the Encyclopedia of Meteorites. (Caution, these are of unknown reliability)
Woreczko Jan & Wadi

Geography:

Morocco

Coordinates:

Unknown.

Statistics:
This is 1 of 1967 approved meteorites from Morocco (plus 37 unapproved names) (plus 1 impact crater)

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