Meteoritical Bulletin: Entry for Dominion Range 18787

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Dominion Range 18787

Basic information

Name: Dominion Range 18787
This is an OFFICIAL meteorite name.
Abbreviation: DOM 18787
Observed fall: No
Year found: 2018
Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)]
Mass: 3.44 g

Classification
history:

Antarctic Meteorite Newsletter:	AMN 42(2)	(2019)	Howardite
Meteoritical Bulletin:	MB 108	(2020)	Howardite
Recommended:			Howardite [explanation]

This is 1 of 446 approved meteorites classified as Howardite. [show all]
Search for other: Achondrites, HED achondrites, and Howardites

Comments:

Approved 14 Aug 2019

Writeup

help

Writeup from AMN 42(2):

Sample Number

DOM 18787

Newsletter

42,2

Location

Dominion Range

Field Number

24929

Dimensions

1.5 x 1.2 x 1.2

Weight

3.44

Original Classification

Howardite

Mineral Composition (%Fa & %Fs)

Fayalite (mol%): 12;Ferrosilite (mol%): 20-52

A/B

A

Macroscopic Description - Cecilia Satterwhite

85% black fusion crust covers the exterior, the exposed interior is tan colored with white and dark clasts/inclusions. The interior is a gray matrix with abundant light/dark inclusions/clasts, some are large, minor oxidation is visible.

Thin Section Description (,2) - Cari Corrigan, Tim McCoy

The section shows a groundmass of comminuted pyroxene and plagioclase (up to 3 mm) with fine- to coarse-grained basaltic clasts ranging up to 4 mm. Some of the clasts are sulfide rich. Most of the pyroxene is orthopyroxene with compositions ranging from Fs_20-52Wo_1-12 (most are Fs_20-26) and olivines are Fa₁₂. The meteorite is a howardite.

Antarctic Meteorite Images for Sample DOM 18787

Thin Section Photo of Sample DOM 18787 in Cross-Polarized Light with 1.25X Magnification

Thin Section Photo of Sample DOM 18787 in Plane-Polarized Light with 1.25X Magnification

Lab Photo of Sample DOM 18787 Displaying West Orientation

Lab Photo of Sample DOM 18787 Displaying South Orientation

Lab Photo of Sample DOM 18787 Displaying North Orientation

Lab Photo of Sample DOM 18787 Displaying East Orientation

Lab Photo of Sample DOM 18787

Lab Photo of Sample DOM 18787 Displaying Bottom Orientation

Data from:
  MB108
  Table 0
  Line 0:

State/Prov/County:	Antarctica
Date:	2018
Latitude:	-85.6428
Longitude:	166.6170
Mass (g):	3.443
Pieces:	1
Class:	Howardite
Weathering grade:	A/B
Fayalite (mol%):	12
Ferrosilite (mol%):	20-52
Classifier:	SI
Type spec mass (g):	3.443
Type spec location:	JSC
Main mass:	JSC
Finder:	ANSMET
Comments:	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 42(2) (2019), JSC, Houston
Published in Meteoritical Bulletin, no. 108 (2020) Meteorit. Planet. Sci. 55, 1146-1150

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

Geography:

Antarctica

Antarctica

Coordinates:
Recommended::	(85° 38' 34"S, 166° 37' 1"E)

Statistics:
This is 1 of 43857 approved meteorites from Antarctica (plus 3802 unapproved names)

Proximity search:

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