Eucairite

Eu·cai'rite noun [ Greek ... seasonable, opportune; ... well, good + ... season.] (Min.) A metallic mineral, a selenide of copper and silver; -- so called by Berzelius on account of its being found soon after the discovery of the metal selenium.
Found on http://www.encyclo.co.uk/webster/E/72

Eucairite

• (n.) A metallic mineral, a selenide of copper and silver; -- so called by Berzelius on account of its being found soon after the discovery of the metal selenium.
Found on http://thinkexist.com/dictionary/meaning/eucairite/
No exact match found