Name: Dominion Range 14118 This is an OFFICIAL meteorite name. Abbreviation: DOM 14118 Observed fall: No Year found: 2014 Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)] Mass: 21.8 g
Macroscopic Description - Tim McCoy, Cari Corrigan
This small, equidimensional specimen has largely rounded surfaces and forms a somewhat pyramidal mass. One end exhibits an irregular, jagged surface with marked indentations.
Thin Section Description (,,1) - Cari Corrigan, Tim McCoy
The section consists of a metallic matrix composed of kamacite grains with lengths of 1-4 mm and length to width ratio of 2:4. Nickel-rich schreibersite occurs within and between kamacite lamellae as a minor phase. Individual kamacite grains exhibit numerous and highly distorted Neumann bands indicative of extensive deformation, likely from shock. Graphite-rich nodules occur oriented in the direction of elongation of the kamacite grains and are of similar size to the kamacite lamellae. Graphite inclusions typically include minute metal grains and exhibit ragged edges with the metallic host. No sulfides are present within the graphite. No silicates were observed. The meteorite exhibits a ~0.5 mm thick fusion crust with ?2 structure underlying that crust. Microprobe traverses across the iron indicate a composition of 7.2% Ni and 0.7% P. The meteorite is an iron, likely of group IAB, although it lacks the sulfide component typically found in IAB irons.
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)
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21.8 g
