header
  MetSoc Home            Publications            Contacts  
Search the Meteoritical Bulletin Database
Last update: 22 Apr 2019
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:
Limit to approved meteorite names
Search text:  
Northwest Africa 12296
Basic information Name: Northwest Africa 12296
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 12296
Observed fall: No
Year found: 2017
Country: Morocco
Mass:help 15 g
Classification
  history:
Recommended:  R3-4    [explanation]

This is 1 of 6 approved meteorites classified as R3-4.   [show all]
Search for other: Rumuruti chondrites, Rumuruti chondrites (type 3)
Comments: Approved 2 Feb 2019
Writeuphelp
Writeup from MB 108:

Northwest Africa 12296 (NWA 12296)

Morocco

Find: 2017

Classification: Rumuruti chondrite (R3-4)

Physical characteristics: The exterior fusion crust is dark brown and weathered. The interior is primarily reddish-brown with light gray to black clasts (0.1-1 mm).

Petrography: (D. Sheikh, FSU) Breccia consisting of unequilibrated (R3) and equilibrated (R4) clasts. Well-formed chondrules (0.2-0.8 mm). Iron-nickel sulfides present; no metal observed. Shock melt veins present.

Geochemistry: Olivine in type 3 clasts: Fa32.6±11.7 (Fa8.8-49.6, N=46); olivine in type 4 clasts: Fa38.2±0.8 (N=23); low-ca pyroxene in type 3 clasts: Fs20.5±7.4Wo2.4±1.0 (Fs11.2-35.8Wo0.7-5.5, N=40); Ca-pyroxene in type 3 clasts: Fs20.1±2.8Wo 25.7±6.0 (Fs14.6-21.9Wo 17.6-31.4, N=6).

Classification: Rumuruti Chondrite (R3-4)

Specimens: 4.92 grams at UCLA; main mass with Matthew Stream.

Data from:
  MB108
  Table 0
  Line 0:
Date:2017
Mass (g):15
Pieces:1
Class:R3-4
Shock stage:S2
Weathering grade:W2
Classifier:D. Sheikh, FSU
Type spec mass (g):4.92
Type spec location:UCLA
Main mass:Matthew Stream
Comments:Submitted by Daniel Sheikh
Institutions
   and collections
UCLA: Institute of Geophysics and Planetary Physics, University of California, Los Angeles, CA 90095-1567, United States (institutional address; updated 17 Oct 2011)
FSU: Department of Geological Sciences, Florida State University, Tallahassee FL 32306-4100, United States (institutional address; updated 16 Dec 2010)
Catalogs:
References: Published in Meteoritical Bulletin, no. 108, in preparation (2019)
Find references in NASA ADS:
Find references in Google Scholar:
Photos:
CreditPhotos
Public domain photographs:
Daniel Sheikh                              
Geography:

Morocco
Coordinates:Unknown.

Statistics:
     This is 1 of 1347 approved meteorites from Morocco (plus 14 unapproved names) (plus 1 impact crater)

Direct link to this page