Initially, it may seem extremely daunting to be sitting in front of several thousand carats of
small diamonds, knowing that the likelihood of finding a diamond with a meaningful …

The Arabian Plate originated∼ 25Ma ago by rifting of NE Africa to form the Gulf of Aden and
Red Sea. It is one of the smaller and younger of the Earth's lithospheric plates. The upper …

We present the first finding of continental crust-derived Precambrian zircons in garnet/spinel
pyroxenite veins within mantle xenoliths carried by the Neogene Hannuoba basalt in the …

Sustainable development and the transition to a clean-energy economy drives ever-
increasing demand for base metals, substantially outstrip** the discovery rate of new …

Experimental clinopyroxenes synthesized at 850–1500° C and 0–60 kbar in the CMS and
CMAS-Cr systems and in more complex lherzolitic systems have been used to calibrate a Cr …

The minerals constituting the Earth's upper mantle are nominally anhydrous silicates
(NAMs). However they do contain hydrogen as a trace element, decorating point defects in …

Small melt fractions very rich in potassium are likely to be present beneath the lithosphere,
and will separate from the matrix when there is more than 10− 3% melt present if their …

Mantle-derived garnets recovered in diamond exploration programs show compositional
variations in Cr, Ca, Mg, Fe and Ti that reflect the chemical, physical and lithological …

Surface wave tomography, using the fundamental Rayleigh wave velocities and those of
higher modes between 1 and 4 and periods between 50 and 160 s, is used to image …

The equilibrium Ca content of olivine coexisting with clinopyroxene was experimentally
determined in natural lherzolitic compositions (Mg/(Mg+ Fe) ol≈ 0.9). The experiments from …