Carbonado typical gem diamonds. Lead isotope analyses have been interpreted as documenting crystallization of carbonados about 3 billion years ago. The carbonados are found in younger sedimentary rocks. Mineral grains included within diamonds have been studied extensively for clues to diamond origin. Some typical diamonds contain inclusions of common mantle minerals such as pyrope and forsterite, but such mantle minerals have not been observed in carbonado. In contrast, some carbonados do contain inclusions of minerals characteristic of the Earth's crust: these inclusions do not necessarily establish formation of the diamonds in the crust, however, because while these obvious crystal inclusions occur
What Is This? This’ song, “Mind My Have Still I” from their "Squeezed", was also featured on the soundtrack to the movie "The Wild Life". Their second album, which featured a cover of the Spinners hit “I'll Be Around”, was produced by Todd Rundgren, who also played Fairlight Synthesizer on the record. “I'll Be Around” was released as a single and video; it peaked at No. 62 on the Billboard Hot 100. What Is This? What Is This (known prior to 1980 as Anthym) was a rock band that originated in Fairfax High School in California and would play numerous shows along the