Dysprosium (Dy)
References
https://en.wikipedia.org
http://images-of-elements.com/dysprosium.php
Dysprosium (Dy) is contained in the following rare earth mineral:
Another soft, silver metal, dysprosium has one of the highest magnetic strengths of the elements, matched only by holmium. Dysprosium is often added to permanent rare earth magnets to help them operate more efficiently at higher temperatures. Lasers and commercial lighting can use dysprosium, which may also be used to create hard computer disks and other electronics that require certain magnetic properties. Dysprosium may also be used in nuclear reactors and modern, energy-efficient vehicles.
