7.72g NWA 13674 - H7 Ordinary Chondrite Meteorite End Cut

Top Meteorite

$ 145.00

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, & signed Certificate of Authenticity.

I offer a 100% no questions asked 30 day return policy.

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Northwest Africa 13674

Basic 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 2021

Writeup

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 µm. 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. Irving

Institutions
and collections

UWS: 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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