And as it turned out, these were igneous rocks, which was of surprise to us, but a really pleasant surprise because igneous rocks contain different kinds of information that we're interested in for return sample science.
Australian geologists summoned the hunt for precious minerals in Antartic say they have for the first time discovered the deposits of the igneous rock that yields diamonds.Here's Matt McGrath.
These are bodies of igneous rock, often ore-bearing, that have risen as liquid magma from Earth's interior but solidified before they reached the surface.
Unlike sedimentary rocks, which are made by particles of sand and other detritus slowly accumulating on top of each other over time, an igneous rock like Olivine is formed by the cooling of magma.