This article was written
especially for "Crain's Petrophysical Handbook"
by E. R. Crain,
P.Eng in 202.
This webpage version is the copyrighted intellectual
property of the author.
Do not copy or distribute in any form without explicit
metric tonnes Li metal equivalent. Hard rock ore grade is
reported in percent Li2O, similar to potash ore grade in
percent K2O. An average ore grade for a hard rock mine might
be 2.4%. In brines, quality is graded in parts per million (ppm
or mg/liter) Li+ ions – 500 ppm represents a fairly high
concentration in an oilfield brine or a moderate value for a
near-surface brine deposit.
Fox Creek and Valleyview in Canada have 362 000 and 385 000 metric
tonnes of Li metal equivalent, respectively, while the Smackover
Formation in the U.S. has 750 000 metric tonnes.,
membrane-based processes, and electrolysis-based