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 Fresh Hell Is This? commercial obscurity", and "Calgary Herald" critic James Muretich calling the album "more tortured, timeless tunes of sex, drugs and rock 'n' roll by Canada's subculture answer to Ray Davies, Leonard Cohen and Paul Westerberg". It won the Juno Award for Best Alternative Album in 1996. Bergmann followed up with "Design Flaw", an album of rerecorded versions of songs from his earlier albums, in 1998, but did not record another full-length album of new material until "The Apostate" in 2016. What Fresh Hell Is This? What Fresh Hell is This? is the fourth studio album by Art Bergmann, released in 1995