Hapkeite
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Hapkeite is a mineral discovered in a meteorite found in 2000 in the Saudi peninsula of Oman, which originated from Earth's moon. Hapkeite's composition is of silicon and iron, and is similar to other silicon-iron minerals found on Earth. On the moon, the impact is thought to have heated and melted the rock. The metallic vapour is redeposited on rock grains as tiny beads in a glassy coating. Hapkeite is named after University of Pittsburgh scientist Bruce Hapke, who predicted the presence and importance of vapour-deposited coatings on lunar soil grains about 30 years ago. Due to its 2:1 composition of silicon-iron, it was given the chemical formula Fe2Si.
Reference
- Lunar and Planetary Science XXXIV (2003) (http://www.lpi.usra.edu/meetings/lpsc2003/pdf/1818.pdf) PDF format.Template:Mineral-stub