Allan Hills A81005 (ALH A81005) | |
---|---|
Type | Achondrite |
Clan | Lunar meteorite |
Group | Lunar anorthosite[1] |
Parent body | Moon |
Composition | Breccia with plagioclase clasts. |
Weathering grade | A/B |
Country | Antarctica |
Region | Allan Hills |
Coordinates | 76°49′49″S 158°15′32″E / 76.83028°S 158.25889°E[1] |
Observed fall | No |
Found date | 17 January 1982[2] |
TKW | 31.4 grams (1.11 oz) |
Allan Hills A81005 or ALH A81005 (sometimes also named without the "A" in front of the number) was the first meteorite to be recognised as a lunar meteorite. The meteorite Yamato 791197 was discovered in 1979 but its lunar origin was not recognised until 1984.[3] ALH A81005 was found in 1982 in the Allan Hills at the end of the Transantarctic Mountains, during a meteorite gathering expedition (ANSMET).[1]
LMC ALH 81005
was invoked but never defined (see the help page).