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Building the base camp for prospectors.<br />
Rare Earths are used in a variety of high tech and green technologies<br />
including wind turbines, cell phones, magnets, motors, flat panel<br />
displays, and phosphors, etc. What makes rare earths so valuable is there<br />
are essentially no suitable substitutes for them in many applications.<br />
Efficiency or practicality is always sacrificed when a substitute is used.<br />
Recently the US Department of Energy outlined the five rare earth<br />
elements that are the most “critical” to clean and high tech industries.<br />
“Critical” is the term used to indicate a commodity that is in the greatest<br />
demand while being in the shortest supply in the long term, with<br />
the added aspect that substitutes for it are hard or impossible to find.<br />
These are Neodymium, Europium, Terbium, Dysprosium, and Yttrium.<br />
Neodymium is the main component of high strength “super magnets”,<br />
required for all types of motors and related applications (such as wind<br />
turbines, electric vehicles, cell phones). Dysprosium is critical for these<br />
magnets as it allows for use at high temperatures without compromising<br />
magnetic strength. Terbium may substitute for Dysprosium in certain<br />
applications and is used in green phosphors. Europium and Yttrium are<br />
used as phosphors, essential to produce colours in screen displays such<br />
as flat screen televisions and cell phones, as well as in various lighting<br />
applications. Europium is required for producing the red colour in screen<br />
displays with no known substitutes, thus demanding one of the highest<br />
prices of all rare earth oxides. Deposits enriched in these five critical<br />
elements, in addition to significant total rare earth oxide grade, are generally<br />
thought to have the better chance of making it to production. It is<br />
estimated that only five or six new mines outside of China are needed<br />
to satisfy future demand.<br />
Often, the term “rare earth distribution” is used to partially evaluate<br />
a rare earth deposit’s economic potential. It refers to the relative quantity<br />
of each rare earth expressed as a percentage of the total quantity<br />
of all the rare earths. Deposits with higher distribution percentages of<br />
the critical rare earth elements are typically considered the most valuable,<br />
although grade, tonnage, and location are always essential factors.<br />
Rare earth deposits may occur in a variety of geological environments<br />
but most predominantly in carbonatites such as Ashram<br />
(Nunavik), Mountain Pass (California), and Bear Lodge (Wyoming)<br />
deposits; intensely weathered carbonatites, also called laterites, such<br />
as Mount Weld (Australia) and Zandkopsdrift (South Africa) deposits;<br />
MAKIVIK mag a zine<br />
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