agardite
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English
[edit]Etymology
[edit]From Agard + -ite, after French geologist Jules Agard.
Noun
[edit]![](http://upload.wikimedia.org/wikipedia/commons/thumb/a/ab/Agardite-%28Ce%29-174233.jpg/220px-Agardite-%28Ce%29-174233.jpg)
agardite (countable and uncountable, plural agardites)
- (mineralogy) Any of a group of copper arsenate minerals that contain varying proportions of several rare earth elements such as cerium, neodymium, lanthanum and yttrium.