One possible use of this mineral is the sequestering of CO2 from the atmosphere. At higher temperatures and pressures it undergoes a phase transition to wadsleyite, which can 
One possible use of this mineral is the sequestering of CO2 from the atmosphere. At higher temperatures and pressures it undergoes a phase transition to wadsleyite, which can then undergo a further transition to ringwoodite. Thought to be the most abundant mineral in the Earth's mantle at shallower depths, it occurs in both mafic and ultramafic igneous rocks. Compostitions of this mineral are usually given as molar percentages of forsterite, the magnesium rich variety, and fayalite. Also giving its name to a group which includes tephroite, monticellite, and kirschsteinite, this is, for 10 points, what mineral also known as peridot and which occupies the top of the discontinuous branch of Bowen's reaction series.
One possible use of this mineral is the sequestering of CO2 from the atmosphere.
{Olivine}