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Northwest Africa 11914
Basic information Name: Northwest Africa 11914
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 11914
Observed fall: No
Year found: 2013
Country: (Northwest Africa)
Mass:help 60.4 g
Meteoritical Bulletin:  MB 107  (2018)  H5
Recommended:  H5    [explanation]

This is 1 of 11988 approved meteorites (plus 23 unapproved names) classified as H5.   [show all]
Search for other: H chondrites, H chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7)
Comments: Approved 24 Jul 2018
Writeup from MB 107:

Northwest Africa 11914 (NWA 11914)

(Northwest Africa)

Purchased: 2013

Classification: Ordinary chondrite (H5)

History: Purchased by John A. Shea in 2013 via E-bay from Steve Witt who acquired it in a lot of northwest African meteorites

Physical characteristics: Dark reddish brown weathering patina covers all exterior surfaces

Petrography: In thin section, chondrules are readily delineated; mesostases are devitrified.

Geochemistry: (M. Hutson, A. Cairns, A. Maroni, J. Longfellow, and A. Ruzicka, Cascadia) Olivine (Fa19.2±0.6, N=33), low-Ca pyroxene (Fs17.1±0.8Wo1.2±0.3, N= 17).

Classification: H5 chondrite based on chemistry and texture

Specimens: Cascadia holds 17.1 g in three pieces, in addition to one polished thin section and a mounted butt.

Data from:
  Table 0
  Line 0:
Place of purchase:E-bay
Date:P 2013
Mass (g):60.4
Shock stage:S2
Weathering grade:W2
Fayalite (mol%):19.2±0.6
Ferrosilite (mol%):17.1±0.8
Wollastonite (mol%):1.2±0.3
Classifier:M. Hutson, A. Cairns, A. Maroni, J. Longfellow, and A. Ruzicka, Cascadia
Type spec mass (g):17.1
Type spec location:Cascadia
Main mass:John A. Shea, 8723 Maplebrook Parkway N., Brooklyn Park, MN 55445
Comments:Lab number CML0813; submitted by A. Ruzicka
   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 Meteoritical Bulletin, no. 107, MAPS 55, 460-462
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     This is 1 of 9829 approved meteorites from (Northwest Africa) (plus 1851 unapproved names)

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