出典:Wiktionary
Originally named "gray sulphuret of copper in dodecahedral crystals" in 1817 by mineralogist James Sowerby.
Renamed in 1819 by William Phillips in honour of Smithson Tennant (1761-1815), an English chemist who discovered the elements iridium and osmium.
tennantite (複数形 tennantites)
出典:Wikipedia
出典:『Wikipedia』 (2011/06/14 12:23 UTC 版)
Tennantite is a copper arsenic sulfosalt mineral. Its chemical formula is Cu12As4S13. It is grey-black, steel-gray, iron-gray or black in color. A closely related mineral, tetrahedrite (Cu12Sb4S13) has antimony substituting for arsenic and the two form a solid solution series. The two have very similar properties and is often difficult to distinguish between tennantite and tetrahedrite. Iron, zinc, and silver substitute up to about 15% for the copper site.