Meteoritical Bulletin: Entry for Dominion Range 18218

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Dominion Range 18218

Basic information

Name: Dominion Range 18218
This is an OFFICIAL meteorite name.
Abbreviation: DOM 18218
Observed fall: No
Year found: 2018
Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)]
Mass: 12.1 g

Classification
history:

Recommended:

L3.8 [explanation]

This is 1 of 69 approved meteorites classified as L3.8. [show all]
Search for other: L chondrites, L chondrites (type 3), Ordinary chondrites, and Ordinary chondrites (type 3)

Comments:

Approved 22 Sep 2022

Writeup

help

Writeup from AMN 45(2):

Sample Number

DOM 18218

Newsletter

45,2

Location

Dominion Range

Field Number

25194

Dimensions (cm)

2.1 x 2.0 x 1.6

Weight (g)

12.09

Original Classification

L3.8 Chondrite

Mineral Composition (%Fa & %Fs)

Fayalite (mol%): 23-28;Ferrosilite (mol%): 20-21

Weathering

A/B

Fracturing

B

Macroscopic Description - Curtis Calva

The fusion crust is rough and very dark brown to black in color. The sample is round with fractures and large rust halos that are orange. The interior has a black matrix that is slightly rusty with grey spherical inclusions and metal.

Thin Section Description -

This section exhibits numerous, well-defined chondrules, chondrule fragments and individual mineral grains (up to ~1 mm). Pyroxene is polysynthetically twinned. The meteorite is only modestly weathered with staining of some grains visible. Shock effects are minimal. Olivines are unequilibrated and are Fa_23-28. Pyroxenes are Fs_20-21Wo₂. The meteorite is an L3 chondrite, likely subtype 3.8.

Antarctic Meteorite Images for Sample DOM 18218

Field Photo(s) :

ANSMET DOM 18218 - Field Number: 25194, NASA Photo Number: jsc2021e008626

Field photo image(s) courtesy of the ANSMET (ANtarctic Search for METeorites) Program, Case Western Reserve University and the University of Utah

Antarctic Meteorite Images for Sample DOM 18218

Lab Photo(s) :

Antarctic Meteorite Images for Sample DOM 18218

Thin Section Photo(s) :

Thin Section Photo of Sample DOM 18218,2 at 5x magnification in Cross Polarized Light

Thin Section Photo of Sample DOM 18218,2 at 5x magnification in Plane Polarized Light

Thin Section Photo of Sample DOM 18218,2 at 5x magnification in Reflected Light

Data from:
  MB111
  Table 0
  Line 0:

Date:	2018
Latitude:	-85.6524
Longitude:	167.226
Mass (g):	12.087
Pieces:	1
Class:	L3.8
Weathering grade:	A/B
Fayalite (mol%):	23-28
Ferrosilite (mol%):	20-21
Magnetic suscept.:	4.11
Classifier:	SI
Type spec mass (g):	12.087
Type spec location:	JSC
Main mass:	JSC
Finder:	ANSMET
Comments:	EMPA; submitted by AMN

Institutions
and collections

JSC: Mailcode XI, 2101 NASA Parkway, NASA Johnson Space Center, Houston, TX 77058, United States; Website (institutional address; updated 28 Jul 2022)
SI: Department of Mineral Sciences, NHB-119, National Museum of Natural History, Smithsonian Institution, Washington, DC 20560, United States; Website (institutional address; updated 16 Jan 2012)

Catalogs:

Search for this meteorite in the NASA/JSC database (U.S.):

References:

Published in Antarctic Meteorite Newsletter 45(2) (2022), JSC, Houston
Published in Meteoritical Bulletin, no. 111, in preparation (2022)

Find references in NASA ADS:
Find references in Google Scholar:

Geography:

Antarctica

Antarctica

Coordinates:
Recommended::	(85° 39' 9"S, 167° 13' 34"E)

Statistics:
This is 1 of 43856 approved meteorites from Antarctica (plus 3802 unapproved names)

Proximity search:

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