Story with many implications, real or imaginary: http://www.nature.com/news/rock-samples-suggest-meteor-caused-tunguska-blast -1.13163?WT.ec_id=NEWS-20130611
"Researchers from Ukraine say that they have found a smoking gun for the Tunguska event," and it is a small fragment from an iron-nickel-carbon meteor that could have caused the half-megaton blast, leaving few traces. The study is published in Planetary and Space Science. Hold on ... there is more... including the possibility of a Rossi/ LENR connection! <g> Aside from the enormity of the blast and the lack large rock debris, there is an overlooked factoid - the samples which have been found contain an exotic form of carbon called Lonsdaleite - which is somewhere between graphite and diamond ... and can be nanoporous. There has been prior speculation on carbon - in some exotic form or another, as being part of the Rossi secret catalyst... otherwise this Tunguska story is not exactly on topic. This particular form of carbon was found at another special impact site - which also relates to a pivotal period at the end of the last ice age, around 11-13 thousand years ago which is steeped in mythology (the demise of the Clovis culture, the rise of the Gobekli Tepe culture, Atlantis, the flood of Noah, etc). Lonsdaleite has been found as nano-crystals embedded in iron-nickel and dated to this exact time period at Lake Cutizeo near Guanajuato, Mexico, supportive of the controversial Younger Dryas impact hypothesis. That was presumed to be a massive explosion, since melt-glass from it was found as far away as Syria. Lonsdaleite is an allotrope of carbon with a hexagonal lattice. The crystal lattice, is harder and stronger than diamond and usually embedded in an iron-nickel matrix, and there is the important nano-geometry (it is called nano-diamond), and the fact that many meteors contain ice, methane and hydrogen - all of which, taken together with a larger than expected explosion ... hmmm... maybe it is a bit surprising that the Pentagon hasn't taken an active interest in the HotCat... or maybe they have. Jones
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