header
  MetSoc Home            Publications            Contacts  
Search the Meteoritical Bulletin Database
Last update: 17 Oct 2021
Search for: Search type: Search limits: Display: Publication:
Names
Text help
Places
Classes
Years
Contains
Starts with
Exact
Sounds like
NonAntarctic
Falls  Non-NWAs
What's new
  in the last:
Limit to approved meteorite names
Search text:  
Northwest Africa 14240
Basic information Name: Northwest Africa 14240
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 14240
Observed fall: No
Year found: 2020
Country: (Northwest Africa)
Mass:help 7.45 kg
Classification
  history:
Recommended:  H6    [explanation]

This is 1 of 6210 approved meteorites (plus 9 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 18 Sep 2021
Writeuphelp
Writeup from MB 110:

Northwest Africa 14240 (NWA 14240)

(Northwest Africa)

Purchased: 2020

Classification: Ordinary chondrite (H6)

History: Purchased in 2020 by Dean Bessey from a mineral dealer in Erfoud, Morocco

Physical characteristics: Individual stone with regmaglypts and partly abraded fusion crust.

Petrography: (K. Metzler, IfP) Unbrecciated ordinary chondrite with high metal content. It shows a strongly recrystallized texture with blurred outlines of chondrule relicts. Secondary feldspar grains mostly >50 µm.

Geochemistry: Mineral compositions and geochemistry: Mean olivine composition is Fa19.0±0.4 (Fa18.4-19.6; n=10); mean low-Ca pyroxene composition is Fs16.5±0.2Wo1.5±0.1 (Fs16.2-16.8Wo1.3-1.6; n=10).

Classification: H chondrite based on the high metal content and mineral chemistry. Petrologic type 6 based on the equilibrated state of olivine and pyroxene and large grain size of secondary plagioclase.

Data from:
  MB110
  Table 0
  Line 0:
Place of purchase:Erfoud, Morocco
Date:P 2020
Mass (g):7454
Pieces:1
Class:H6
Shock stage:C-S1
Weathering grade:W0/1
Fayalite (mol%):19.0±0.4
Ferrosilite (mol%):16.5±0.2
Wollastonite (mol%):1.5±0.1
Classifier:K. Metzler, IfP
Type spec mass (g):20
Type spec location:IfP
Main mass:Dean Bessey, Brisbane, Australia
Comments:Submitted by K. Metzler, IfP
Institutions
   and collections
IfP: Institut für Planetologie, Wilhelm-Klemm-Str. 10, 48149 Münster, Germany (institutional address; updated 23 Jan 2012)
Bessey: Dean Bessey ,P.O. Box 40810, Glenfield, Auckland 1310 , New Zealand; Website (private address)
Catalogs:
References: Published in Meteoritical Bulletin, no. 110, in preparation (2021)
Find references in NASA ADS:
Find references in Google Scholar:
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 7937 approved meteorites from (Northwest Africa) (plus 1960 unapproved names)

Direct link to this page