Carbonado in the pores that are common in carbonados, they may have been introduced after carbonado formation. Inclusions of other minerals, rare or nearly absent in the Earth's crust, are found at least partly incorporated in diamond, not just in pores: among such other minerals are those with compositions of Si, SiC, and Fe‑Ni. No distinctive high-pressure minerals, including the hexagonal carbon polymorph, lonsdaleite, have been found as inclusions in carbonados, although such inclusions might be expected if carbonados formed by meteorite impact. Isotope studies have yielded further clues to carbonado origin. The carbon isotope value is very low (little carbon‑13
Now That's What I Call Rock Now That's What I Call Rock Now That's What I Call Rock is a compilation album released on January 22, 2016, by the distributors of the popular "Now That's What I Call Music" series in the United States. The collection brings together a diverse group of artists from a range of styles such as "EDM textures, summer festival blues-rock chug, arena alternative, post-Tool hard rock, triumphant psych-pop and cosmopolitan retro experiments." Despite the popularity of the "Now" albums, rock compilations have been an area of neglect by record companies. To reach out to a broad audience, the first rock volume