description MAC88104 Overview
MAC 88104 is a lunar meteorite recovered in 1988 from the MacAlpine Hills region of Antarctica during systematic Antarctic meteorite collection work. It is classified as an anorthositic regolith breccia, consisting of fragmented lunar highland rocks and surface material consolidated by repeated impacts. Its composition identifies it as material from the Moon's feldspar-rich ancient crust rather than from a terrestrial or asteroidal source.
help MAC88104 FAQ
Is MAC 88104 really from the Moon?
Yes. MAC 88104 is a confirmed lunar meteorite, meaning it was ejected from the Moon's surface by an asteroid impact and eventually fell to Earth. Its mineral composition and isotope ratios match Apollo Program lunar samples, confirming its origin.
Where and when was MAC 88104 found?
It was recovered in 1988 from the MacAlpine Hills region of Antarctica, during systematic meteorite collection expeditions conducted through the ANSMET (Antarctic Search for Meteorites) program. Antarctica's ice surfaces make meteorite recovery uniquely efficient.
Is MAC 88104 paired with other specimens?
MAC 88104 is commonly discussed alongside MAC 88105, which was found in the same area and is considered a paired specimen likely originating from the same meteoroid that broke apart during atmospheric entry or on the ice.
What does MAC 88104's classification as an anorthositic regolith breccia mean?
It means the meteorite consists of fragmented rocks from the lunar highlands, consolidated from surface material that was broken apart and re-welded by impacts. This type of breccia represents the ancient crust of the Moon and provides scientists with samples comparable to those brought back by the Apollo missions.
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