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Northwest Africa 7626
Basic information Name: Northwest Africa 7626
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 7626
Observed fall: No
Year found: 2011
Country: (Northwest Africa)
Mass:help 60 g
Meteoritical Bulletin:  MB 102  (2013)  H-melt breccia
Recommended:  H-melt breccia    [explanation]

This is 1 of 26 approved meteorites classified as H-melt breccia.   [show all]
Search for other: H chondrites, H chondrites (type 4-7), Melted chondrites, Ordinary chondrites, and Ordinary chondrites (type 4-7)
Comments: Approved 26 May 2013
Writeup from MB 102:

Northwest Africa 7626 (NWA 7626)

(Northwest Africa)

Purchased: 2011

Classification: Ordinary chondrite (H, melt breccia)

History: Purchased by Nicola Castellano at the Torino Mineral Show, Italy.

Physical characteristics: A single piece weighing 60 g with no fusion crust.

Petrography: (V. Moggi Cecchi, G. Pratesi, S. Caporali, MSP): The thin section displays two lithologies: a chondritic one and a impact melted one. The chondritic portion shows an unequilibrated texture consisting of rare chondrules (mainly GO) up to 0.6 mm in diameter, embedded in fine-grained matrix mainly consisting of olivine, plagioclase and orthopyroxene. Opaque phases are metal and troilite. The impact melted portion shows diffuse melt features such as metal veins, micron-sized metal grains and glass.

Geochemistry: Olivine, Fa14.8-19.2, mean Fa16.8, PMD 21; orthopyroxene, Fs14.6-17.1En84.1-81.6Wo1.3, mean Fs14.9En83.8Wo1.3.

Classification: PMD consistent with type 3.

Specimens: Type specimen, 12.02 g, MSP; main mass Castellano.

Data from:
  Table 0
  Line 0:
Place of purchase:Torino
Date:P 2011
Mass (g):60
Class:H-melt breccia
Shock stage:S3
Weathering grade:W2
Fayalite (mol%):14.8-19.2
Ferrosilite (mol%):14.6-17.1
Wollastonite (mol%):1.34
Classifier:V. Moggi Cecchi, S. Caporali, G. Pratesi, MSP
Type spec mass (g):12.02
Type spec location:MSP
Main mass:Castellano
Comments:Inv. # MSP 5225; submitted by Vanni Moggi Cecchi
   and collections
MSP: Museo di Scienze Planetarie, Via Galcianese 20/H, 59100 Prato, Italy, Italy; Website (institutional address; updated 22 Oct 2022)
References: Published in Meteoritical Bulletin, no. 102, MAPS 50, 1662, September 2015
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     This is 1 of 9429 approved meteorites from (Northwest Africa) (plus 1876 unapproved names)

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