Name: Dominion Range 18242 This is an OFFICIAL meteorite name. Abbreviation: DOM 18242 Observed fall: No Year found: 2018 Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)] Mass: 15.9 g
Exterior is dark grey brown with some fracturing and small (0.5-1mm) white inclusions. There are also some light grey-brown inclusions that are up to 3mm in size. Fresh interior is grey matrix with inclusions that are white, light brown or grey and up to 3mm in size.
Thin Section Description (,2) - Cari Corrigan, Tim McCoy
These sections are similar enough that one description will suffice. They consist of a highly brecciated assemblage of mostly single mineral grains ranging up to 0.5 mm in size. Grains are dominated by pyroxene and plagioclase (no olivine grains were analyzed in these sections). Polymineralic igneous fragments/clasts include coarse grained gabbro and symplectites. Melt veins and pockets were observed in both sections. Pyroxene is dominantly pigeonite with fine exsolution, with orthopyroxene of Fs30Wo3 and augite Fs20-64Wo20-39. Fe/Mn of pyroxenes ranges from ~50-70. Plagioclase is calcic with An91-99Or0.1-0.3. These meteorites are lunar basaltic breccias, likely regolith breccias and are most certainly paired with DOM 18262 pairing group reported in the Fall 2019 newsletter.
Antarctic Meteorite Images for Sample DOM 18242
Lab Photo(s) :
Antarctic Meteorite Images for Sample DOM 18242
Thin Section Photo(s) :
Data from: MB109 Table 0 Line 0:
Date:
2018
Latitude:
-85.6514
Longitude:
167.23
Mass (g):
15.92
Pieces:
1
Class:
Lunar (bas. breccia)
Weathering grade:
A/B
Ferrosilite (mol%):
31-52
Magnetic suscept.:
4.28
Classifier:
SI
Type spec mass (g):
15.92
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.):