Hapkeite

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.

Due to its 1:2 composition of silicon-iron, hapkeite was given the chemical formula Fe₂Si. It occurs as opaque, yellowish to silvery microscopic isometric crystals.

It is named after University of Pittsburgh scientist Bruce Hapke, who predicted the presence and importance of vapor-deposited coatings on lunar soil grains about 30 years ago (see also space weathering).

See also

• Glossary of meteoritics
• List of minerals
• List of minerals named after people

References

• Lunar and Planetary Science XXXIV (2003) PDF format.
• Space weathering on airless planetary bodies: Clues from the lunar mineral hapkeite 2004 PNAS
• Mindat data
• Webmineral data