As indicated by the wide range of possible values contained within the confidence intervals, this
analysis is a very crude approximation of indium’s long-term price. Although additional data or
different techniques may help to reduce the variation in the estimates, these would not address
some of the underlying weaknesses with this approach. For example, although the plots in Figure
26 and Figure 27 can be intuitively appealing, the methodology ignores specific features of
minerals that complicate such a broad-brush comparison:
Various minerals and types of ore bodies are associated with varying degrees of
affect historical supply and prices.
Various types of deposits are found in various types of mines The depth and geometry of
dilution tends to not be reported in company resource estimates and would therefore
potentially bias the ore concentration calculation.
Many deposits contain more than one mineral. A mineral’s association with other metals
a mine’s profitability will directly affect the level of costs and therefore the price required
to recover that mineral.
Despite these shortcomings, these estimates provide an important starting point for assessing the
long-term supply of indium. Further work is needed to estimate the quantities of indium likely
contained in deposits of different concentrations, mineralogies, and geographic locations.
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