Brines, uranium deposits

Derome, D., Cathelineau, M., Cuney, M., Fabre, C., Lhomme, T., Banks, D.A. 2005. Mixing of sodic and calcic brines and uranium deposition at McArthur River, Saskatchewan, Canada. A raman and laser-induced breakdown spectroscopic study of fluid inclusions. Economic Geology, 100, 1529-1545. 

Table 1 gives the average metal content of the earth s cmst, ore deposits, and concentrates. With the exceptions of the recovery of magnesium from seawater and alkaU metals from brines, and the solution mining and dump or heap leaching of some copper, gold, and uranium (see Uranium and uranium compounds), most ores are processed through mills. Concentrates are the raw materials for the extraction of primary metals. 

Figure 10. Maximum homogcni/alion temperatures of lluid inclusions in halite (Th ,ax) versus depth from the top 90 m of the Death Valley core (lOOka-Oka, with uranium series dates shown on left) The plot represents a total of 2,328 homogenization temperature measurements Lacustrine halites, deposited in a perennial saline lake. 35 ka to 10 ka. have exceptionally low maximum homogenization temperatures which suggests brine temperatures 4°C to 15 °C below modern late April temperatures (From Lowenstein el al.. 1998. Fig. 8. p. 2.W).

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