IXR Are tabulating their basket not to include the ore's quality – the grade – is not included .
4.4.2 Basket priceWhen pricing mineral concentrates and assessing mining projects the basket price is frequentlyused. The basket price indicates the potential price of 1 kg of rare earth elements (TREO), produced from a given rock, disregarding the amount of rock which should go into this quantum. Theuse of basket price has the built-in inconvenience that the ore's quality – the grade – is not included; therefore, a low value ore can achieve a higher basket price than a high value ore. Forexample, certain granitic rocks with only a few g/ton REE (i.e. low ore value) will be able to achievehigh basket price if the HREE/LREE ratio is high. Therefore, basket price cannot solely be usedas a parameter for the economy of an exploration project.Based on the prices in Table 4-2 and public data on the minerals' relative content of rare earthelements, the basket price for selected mines and projects has been calculated (Figure 4-14).Basket price is calculated both as a total value, in which all elements are included, and specificallyfor the magnetic metals neodymium, praseodymium, terbium, and dysprosium. The basket pricevaries between 7 and 30 USD/kg with the highest prices for projects with xenotime as the mainmineral (Ptinga in Brazil and Lehat in Malaysia) and IA deposits (Longnan and Guangdong inChina). Deposits with eudialyte (Norra Kärr in Sweden and Kringlerne in Greenland) both haverelatively high basket prices, while Kvanefjeld/Kuannersuit (Greenland), which is dominated bythe mineral steenstrupine, has a slightly lower basket price. The lowest basket prices are seenfor deposits dominated by monazite (Mt. Weld in Australia) and bastnäsite (Mountain Pass in theUSA and Bayan Obo in China), which is due to their relatively high content of lanthanum andcerium.
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