IT is usually from the investigations of mineralogy that an estimation of the grade of metamorphism is made, since the appearance of some minerals and disappearance of others—or the change of ...

While sourcing these substances quickly is difficult and certainly a headache for the US, and while prices of these low-volume materials have already rocketed, there are critical mineral projects ...

Jorge Valverde's research working on critical minerals has developed from the UNU MERIT UNESCO Chair for Science, Technology and Innovation for Latin-America. China recently banned the export of ...