Source:
Geology.com
The
Salar de Atacama, in northern Chile, is a 3,000 km2 desert
salt basin and the world’s largest producer of lithium. Two
companies, Sociedad Quimica y Minera (SQM) and Rockwood Holdings,
Inc., extract lithium from this brine. SQM has a claim of ~820 km2
and two operations in the nucleus. It currently produces lithium from
its south-western operation. Rockwood has a claim of ~137 km2
and one operation in the south-east, part of which is devoted to
lithium extraction. A buffer zone ofaround 100 km2
separates the two companies’ claims. Atacama’s salt nucleus, in
the southern half of the salar, is a layer of halite (salt) with an
area of around 1,400 km2 and a thickness of around 360 m in the
center of the basin. In the uppermost 30 to 40 m of the halite layer,
there are abundant pores between the halite crystals. This porous
zone is referred to as an aquifer, and it contains a very saline
solution (brine) that contains from 900 ppm to 7,000 ppm of lithium,
the world’s highest known concentrations in brines of this type.
Brine outside of this nucleus has lower but still important
concentrations of lithium, up to 1,000 ppm. Recent estimates for
reserves of lithium in the aquifer range from 1.0 to 7.25 Mt. Tahil
estimates that the aquifer contains 1.0 Mt of lithium. SQM estimates
that their claim contains 6.0 Mt of lithium reserves. Including SQM’s
and Rockwood’s claims, the buffer zone, and a portion of the area
to the north of the nucleus containing 400,000 tonnes of lithium,
Evans estimates that the salar contains a total of 7.0 Mt of lithium
reserves. Yaksic and Tilton also accept this estimate. Clarke and
Harben have a slightly higher value of 7.25 Mt but provide no
information on why they increased the estimate.
Companies
active in Chile
Albemarle
Corporation
Sociedad
Chilena Del Litio Limitada
Sociedad
Quimica y Minera
(NYSE:SQM
Wealth Minerals (WML:CN)
SQM finally ended an almost four year long
dispute with the Chilean Government, with the latter allowing the
company to expand their lithium production quota from around roughly
50-60K tonnes today up to 216,000 tonnes per annum (tpa) through 2025.
As a result of this news, the markets responded by selling off lithium
stocks across the board out of worries of an oversupply caused by SQM
flooding the markets.
Talison Lithium (Tianqi Lithium Corporation-51%, Abemarle-49%) Wealth Minerals (WML:CN)