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4.2 gram NWA 11265 Carbonaceous Chondrite CV3 Part Slice

£25.75

Only 1 left in stock

Part Slice of NWA 11265 weighing 4.2 grams. Has lots of chondrules and a nice large CAI (Calcium Aluminium Inclusion) visible. CAIs are whitish clasts found in the most primitive kinds of chondrite meteorites, notably some Carbonacceous Chondrites. They consist of high-temperature minerals, including silicates and oxides of calcium, aluminum, and titanium. In 2002 scientists accurately dated CAIs at 4.57 billion years, making them the oldest known objects in the solar system.

This slice will come in a display box with an ID card.

 

Northwest Africa 11265
Basic informationName: Northwest Africa 11265
This is an OFFICIAL meteorite name.
Abbreviation: NWA 11265
Observed fall: No
Year found: 2017
Country: (Northwest Africa)
Mass:help 1502 g
Classification
history:
Meteoritical Bulletin:MB 106  (2018)CV3
Recommended:  CV3    [explanation]

This is 1 of 610 approved meteorites (plus 1 unapproved name) classified as CV3.   [show all]
Search for other: Carbonaceous chondritesCarbonaceous chondrites (type 3)CV chondrites, and CV-CK clan chondrites

Comments:Approved 28 Nov 2017
Writeuphelp

Writeup from MB 106:

Northwest Africa 11265 (NWA 11265)

(Northwest Africa)

Purchased: 2017 Jan

Classification: Carbonaceous chondrite (CV3)

History: Purchased by Martin Goff in January 2017 from a Moroccan dealer.

Petrography: (A. Irving and S. Kuehner, UWS) Ellipsoid-shaped granular chondrules (apparent diameter 730±500 µm, N=38) and elongate CAI (both showing preferred orientation) are set in a fine grained, fractured matrix (~45 vol.%, sepia brown in thin section). One CAI contains the assemblage corundum+gehlenite+spinel+perovskite.

Geochemistry: Olivine (Fa1.7-48.2, N = 3), orthopyroxene (Fs0.5-1.0Wo1.0-0.7, N = 3), subcalcic augite (Fs3.3Wo32.1; Fs15.5Wo25.3; N = 2)

Classification: Carbonaceous chondrite (CV3). Chondrule size and matrix abundance are slightly anomalous features. Probably paired with NWA 11256.

Specimens: 59.1 g including one polished thin section and one polished mount at UWB; remainder with Mr. M. Goff.

Data from:
MB106
Table 0
Line 0:
Place of purchase:Morocco
Date:P 2017 Jan
Mass (g):1502
Pieces:4
Class:CV3
Shock stage:S2
Weathering grade:low
Fayalite (mol%):1.7-48.2
Ferrosilite (mol%):0.5-1.0
Wollastonite (mol%):1.0-0.7
Classifier:A. Irving and S. Kuehner, UWS
Type spec mass (g):59.1
Type spec location:UWB
Main mass:M. Goff
Comments:Work name MG17-1; submitted by A. Irving