YARROWITE
YARROWITE Yarrowite – Cu9S8 – is one of the forms of copper sulfide. It is relatively rare and is part of copper ores. There are nine different minerals that are formed only by Cu+S. Copper sulfide formed at low temperatures (T<~105ºC) is monoclinic chalcocite. At high temperatures (T>~105ºC) (including in blast furnaces) digenite (Cu9S5 trigonal) […]