Erin A. McCullough and Nedal Nassar, "Assessment of critical minerals: Updated application of an early-warning screening methodology", https://doi.org/10.1007/s13563-017-0119-6
Increasing reliance on non-renewable mineral resources reinforces the need for identifying potential supply constraints before they occur. The US National Science and Technology Council recently released a report that outlines a methodology for screening potentially critical minerals based on three indicators: supply risk (R), production growth (G), and market dynamics (M). This early-warning screening was initially applied to 78 minerals across the years 1996 to 2013 and identified a subset of minerals as “potentially critical” based on the geometric average of these indicators—designated as criticality potential (C)....
Erin A. McCullough and Nedal Nassar, "Assessment of critical minerals: Updated application of an early-warning screening methodology", https://doi.org/10.1007/s13563-017-0119-6
Increasing reliance on non-renewable mineral resources reinforces the need for identifying potential supply constraints before they occur. The US National Science and Technology Council recently released a report that outlines a methodology for screening potentially critical minerals based on three indicators: supply risk (R), production growth (G), and market dynamics (M). This early-warning screening was initially applied to 78 minerals across the years 1996 to 2013 and identified a subset of minerals as “potentially critical” based on the geometric average of these indicators—designated as criticality potential (C)....
https://pubs.er.usgs.gov/publication/70191019
And:
Critical mineral resources of the United States—Economic and environmental geology and prospects for future supply
Which addresses antimony, barite (barium), beryllium, cobalt, fluorine, gallium, germanium and indium, graphite, lithium, manganese, niobium and tantalum, platinum-group elements, rare-earth elements, rhenium, selenium, tellurium, tin, titanium, vanadium, zirconium and hafnium.
https://pubs.er.usgs.gov/publication/70191019
(148 MB PDF)