Rare, Lunar Olivine Basalt, Meteorite (.6g USD $4,300) Send Comment If Ur Interested

Olivine is denser than most other minerals in basalt and it is also one of the first to start crystallizing. Hence, it often sinks, if it has room to do so, and forms basalts that are abnormally enriched in olivine in the lower part of lava flows for example.
Olivine basalt occurs as massive boulders, greyish-green coloured, fine grained and highly jointed.