Chalcopyrite Chalcopyrite Chalcopyrite ( ) is a copper iron sulfide mineral that crystallizes in the tetragonal system. It has the chemical formula CuFeS. It has a brassy to golden yellow color and a hardness of 3.5 to 4 on the Mohs scale. Its streak is diagnostic as green tinged black. On exposure to air, chalcopyrite oxidises to a variety of oxides, hydroxides and sulfates. Associated copper minerals include the sulfides bornite (CuFeS), chalcocite (CuS), covellite (CuS), digenite (CuS); carbonates such as malachite and azurite, and rarely oxides such as cuprite (CuO). Chalcopyrite is rarely found in association with native copper. Natural
Out of a Center Which Is Neither Dead nor Alive Out of a Center Which Is Neither Dead nor Alive Out of a Center Which Is Neither Dead Nor Alive is the debut full-length album by Chicago-based post-metal band Minsk. Produced by Sanford Parker, the album was released in 2005 on At a Loss Recordings. In a review of the album, Allmusic's Greg Prato wrote: "Although the group has obvious roots in metal (as evidenced by tracks like 'Narcotics and Dissecting Knives'), Minsk has plenty of tricks up its sleeve, such as the sonic hodgepodge 'Holy Flower of the North Star' (a track custom-made for listening to on headphones)." Phil