|Category||Native element minerals|
|Crystal class||Hexoctahedral (m3m)
H-M symbol: (4/m 3 2/m)
|Unit cell||a = 2.831 Å; Z = 1|
|Color||silvery, with a slight tarnish|
Hapkeite is a mineral discovered in the Dhofar 280 meteorite found in 2000 in Oman on the Arabian peninsula. The meteorite is believed to originate from the Moon; specifically, it appears to be a fragment of lunar highland breccia. Hapkeite's composition is of silicon and iron, and it is similar to other silicon-iron minerals found on Earth. An impact on the Moon is thought to have launched the partially molten or vaporized material into orbit.