A pyroxenite xenolith record of subduction-related metal and metalloid mobilisation in the upper mantle and lower crust

摘要

Mineralisation in the crust is the culmination of multiple factors from the source of the magma/metals to the location of 'deposition' of the ore body. Whilst the main concentrating events that lead to mineralisation are predominantly crustal processes (e.g. mag-matic differentiation, S-saturation, etc) the fertility of the source region is important. The lower the concentration of metals in the source region, the more 'upgrading' is required by later (crustal) processes. By understanding the principals dictating source composition and fertility, we may inform mineral exploration models.