Page "Ore" Paragraph 62

Other, lesser, commodities do not have international clearing houses and benchmark prices, with most prices negotiated between suppliers and customers one-on-one.

This generally makes determining the price of ores of this nature opaque and difficult.

Such metals include lithium, niobium-tantalum, bismuth, antimony and rare earths.

Most of these commodities are also dominated by one or two major suppliers with > 60 % of the world's reserves.

The London Metal Exchange aims to add uranium to its list of metals on warrant.