On Offer: 7.72g end cut of the H7 Ordinary Chondrite NWA 13674
Type: H7 Ordinary Chondrite
Description: 7.72 gram end piece of a highly evolved H7 totally equilibrated chondritic meteorite. Chondrites with petrologic grades of 7 are very rare and represent near total chemical equilibration on the parent body.
What you get: 7.72g end cut of NWA 13674 H7 Chondrite meteorite specimen as shown, and signed Certificate of Authenticity.
I offer a 100% no questions asked 30 day .
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Northwest Africa 13674Basic information
Name: Northwest Africa 13674
This is an OFFICIAL meteorite name.
Abbreviation: NWA 13674
Observed fall: No
Year found: 2018
Country: (Northwest Africa)
Mass: 1730 g
Classification
history:
Recommended: H7 [explanation]
This is 1 of 27 approved meteorites classified as H7. [show all]
Search for other: H chondrites, H chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7)
Comments:Approved 8 Apr 2021Writeup
Writeup from MB 110:
Northwest Africa 13674 (NWA 13674)
(Northwest Africa)
Purchased: 2018
Classification: Ordinary chondrite (H7)
History: Purchased by Craig Zlimen in 2018 from a Moroccan dealer.
Petrography: (A. Irving, UWS and P. Carpenter, WUSL) Triple grain junction texture among constituent phases is predominant, but there are also sparse pyroxene oikocrysts containing olivine chadacrysts. No remnant chondrules are present. Grain size is about 200 m. Accessory phases include abundant altered kamacite, taenite, troilite, low-Ti chromite and merrillite. Secondary iron hydroxides are present on grain boundaries.
Geochemistry: Olivine (Fa 18.6 0.1, range Fa 18.5-18.7, N = 5), low-Ca pyroxene (Fs 16.4 0.1Wo 3.8 0.6, range Fs 16.4-16.5Wo 3.4-4.7, N = 4), augite (Fs 7.6 0.6Wo 42.6 1.1, range Fs 7.1-8.2Wo 43.5-41.4, N = 2), plagioclase (An 9.9Or 7.9; An 25.3Or 2.8; N = 2).
Classification: Ordinary chondrite (H7).
Specimens: 21.8 g including one polished thin section at UWB; remainder with Mr. C. Zlimen.
Data from:
MB110
Table 0
Line 0:
Place of purchase:Morocco
Date:P 2018
Mass (g):1730
Pieces:1
Class:H7
Shock stage:S2
Weathering grade:W1/2
Fayalite (mol%):18.6 0.1
Ferrosilite (mol%):16.4 0.1
Wollastonite (mol%):3.8 0.6
Classifier:A. Irving, UWS, and P. Carpenter, WUSL
Type spec mass (g):21.8
Type spec location:UWB
Main mass:C. Zlimen
Comments:Work name ZLI31; submitted by A. IrvingInstitutions
and collectionsUWS: University of Washington, Department of Earth and Space Sciences, 70 Johnson Hall, Seattle, WA 98195, United States (institutional address; updated 15 Jan 2012)
WUSL: Washington Univ., One Brookings Drive, St. Louis, MO 63130, United States (institutional address; updated 17 Oct 2011)
UWB: University of Washington, Box 353010 Seattle, WA 98195, United States (institutional address; updated 27 Jul 2012)
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Product Attributes:
Country/Region Of Manufacture: Morocco
Oriented: Fresh Crust
Weight (lbs.): 0.50 lb
Length (in.): 12
Width (in.): 10
Height (in.): 3
