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Northwest Africa 14263
Basic information Name: Northwest Africa 14263
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 14263
Observed fall: No
Year found: 2009
Country: (Northwest Africa)
Mass:help 140 g
Meteoritical Bulletin:  MB 110  (2022)  H6
Recommended:  H6    [explanation]

This is 1 of 6996 approved meteorites (plus 6 unapproved names) classified as H6.   [show all]
Search for other: H chondrites, H chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7)
Comments: Approved 6 Oct 2021
Writeup from MB 110:

Northwest Africa 14263 (NWA 14263)

(Northwest Africa)

Purchased: 2009 Sept

Classification: Ordinary chondrite (H6)

History: Sent to Cascadia by John Shea (ebay username bigjohnshea). Shea purchased on April 11, 2013, from Star Van Scriver (ebay username lenaheliodor1) and was given the information that Scriver purchased the sample in Morocco in September 2009 from "kids that go to the desert to look for them". On January 19, 2021, Martin Goff emailed Cascadia that he’d "recently acquired a box of NWA Chondrites that came from US collector john/Johannes Shea", including CML 0750.

Physical characteristics: Physical Characteristics: The meteorite is covered by a dark weathering rind and patches or orange-brown rust. Cut faces have a few lighter-colored chondrules readily distinguished from a darker brown background, which is porous in places. A handful of prominent fractures filled with orange weathering products cut across the sample.

Petrography: (M. Hutson, A. Ruzicka, Cascadia): In thin section, chondrules are dissected by numerous small dark veins and appear indistinct against a dark background; in reflected light, this background consists of a web of opaque weathering products, metal, and sulfide. Plagioclase feldspar grains greater than 50 microns across are common.

Geochemistry: Olivine: Fa19.6±0.2, N=32; Low-Ca pyroxene: Fs17.2±0.2Wo1.3±0.2, N=27, plagioclase feldspar: Ab80.9±1.2Or6.9±1.2, N=12.

Classification: Ordinary chondrite (H6) based on mineral chemistry, texture, and grain size of plagioclase feldspar.

Specimens: Cascadia holds 31.4 g in two pieces, as well as a polished thin section and material in an epoxy butt; MGoff holds the main mass.

Data from:
  Table 0
  Line 0:
Place of purchase:Morocco
Date:P 2009 Sept
Mass (g):140
Shock stage:S2
Weathering grade:W2
Fayalite (mol%):19.6±0.2 (N=32)
Ferrosilite (mol%):17.2±0.2 (N=27)
Wollastonite (mol%):1.3±0.2 (N=27)
Classifier:M. Hutson, A. Ruzicka, W. Fish, and M. Jennings, Cascadia
Type spec mass (g):31.4
Type spec location:Cascadia
Main mass:MGoff (Martin Goff, MSG Meteorites, United Kingdom; http://www.msg-meteorites.co.uk/)
Comments:Lab number CML 0750; submitted by Melinda Hutson
   and collections
Cascadia: Cascadia Meteorite Laboratory, Portland State University, Department of Geology, Room 17 Cramer Hall, 1721 SW Broadway, Portland, OR 97201, United States; Website (institutional address; updated 28 Oct 2011)
References: Published in Gattacceca J., McCubbin F.M., Grossman J., Bouvier A., Chabot N.L., D'Orazio M., Goodrich C., Greshake A., Gross J., Komatsu M., Miao B., and Schrader D. (2022) The Meteoritical Bulletin, No. 110. Meteorit. Planet. Sci. 1-4
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     This is 1 of 9825 approved meteorites from (Northwest Africa) (plus 1851 unapproved names)

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