For the Green revolution, how is a critical mineral different from an essential mineral?

The new ELI is the last in the current series of Essential Minerals for the Green Revolution. It is "Essential mineral – critical mineral: what is the difference?"

This activity defines the purpose of a national critical minerals list for the future needs of the UK’s technology. It could form a summary of the Earthlearningidea series on metal ores which are essential for the “new” technologies as well as for the growth of existing industries.

The full series of 'Essential Minerals for the Green Revolution' can be found in the Minerals section of Earth Materials on our website.