Sterling, Always great to hear from true Meteorite Royalty. Glad you are still posting here. Take care. Best Regrds, Carl -- Love & Life
---- "Sterling K. Webb via Meteorite-list" <[email protected]> wrote: > Hi, Jeff, Mattias, List, > > Diamonds are formed deep > within the Earth's mantle: > between 100 km and 200 km > below the surface at static > temperatures of 900 - 1300 C. > Pressures there are between > 45 - 60 kilobars. > > A meteor impact, even a > relatively small one (Meteor > Crater) can generate 20-25 > kilobars in impact pressures. > A 50% increase in veocity > would boost those impact > temperatures and pressures > to diamond-forming levels. > > If it was an iron meteorite > with carbon inclusions... > > Little diamonds... > > See: Meteor Impact on Solid > Surfaces, by E. J. Opik: > http://adsabs.harvard.edu/full/1958IrAJ....5...14O > > So, don't just drop the lumps > of coal; throw them down... > really hard. And it wouldn't > hurt to give them a good > squeeze before you do! > > Another good reference on > the effect of impact pressures > and temperatures can be found > here: > http://theconversation.com/meteorite-impact-turns-silica-into-stishovite-in- > a-billionth-of-a-second-48946 > > Diamonds and craters go together. > > Russia's largest diamond mine > IS a crater: "The world's largest > known diamond deposit was > formed by a massive asteroid > impact," they say: > > "Diamonds Beneath the Popigai > Crater -- Northern Russia:" > https://geology.com/articles/popigai-crater-diamonds/ > > Poipigai is the seventh largest > crater on Earth, and the world's > largest known diamond deposit. > It is 100 kilometers wide, with > a rim of deformed rock up to 20 > kilometers wide. > > It was formed by the impact of > a massive asteroid of 5 or 6 km. > The biggest diamonds there are > only 2mm in size, the size of the > carbon flakes they formed from. > > Interestingly, the conditions at > the impact point were too severe > to form diamonds! "The diamonds > found today were probably formed > in a thin zone of rock located > about 12 to 13 kilometers out > from the point of impact." > > > Sterling Webb > __________________________ > > From: Meteorite-list [mailto:[email protected]] On > Behalf Of Mattias Bärmann via Meteorite-list > Sent: Wednesday, January 10, 2018 10:39 AM > To: Jeff Kuyken; Gmail; Tommy; Met-List > Subject: Re: [meteorite-list] Extra-terrestrial Hypatia stone rattles solar > system status quo > > Sale of lumps of coal suspended pending further notice ; -) > > Am 10.01.2018 um 11:10 schrieb Jeff Kuyken via Meteorite-list: > > Hmmm... diamonds formed from shock with the Earth's > atmosphere or ground? Really? Can't say I'm convinced but happy to be proven > wrong. Although if I'm wrong I'm climbing up a tree and going to start > dropping lumps of coal... ;) > > Cheers, > > Jeff Kuyken > Meteorites Australia > www.meteorites.com.au > IMCA #3085 > www.imca.cc > _____________________________ > From: Gmail via Meteorite-list <[email protected]> > <mailto:[email protected]> > Sent: Wednesday, January 10, 2018 11:55 am > Subject: Re: [meteorite-list] Extra-terrestrial Hypatia stone > rattles solar system status quo > To: Tommy <[email protected]> <mailto:[email protected]> , > Met-List <[email protected]> > <mailto:[email protected]> > > > Seems strange that it has not been classified or published in the > MetBull which makes me question any of the findings. If I understand > correctly, meteoriticists/researchers cannot publish papers until the > meteorite has been published in the MetBull. > > Mendy Ouzillou > > On Jan 9, 2018, at 6:28 PM, Tommy via Meteorite-list > <[email protected]> > <mailto:[email protected]> wrote: > > Have any of you folks heard about this and if so what are your > thoughts? > > Regards! > > Tom > > > https://www.sciencedaily.com/releases/2018/01/180109112437.htm > > > ______________________________________________ > > Visit our Facebook page https://www.facebook.com/meteoritecentral and the > Archives at http://www.meteorite-list-archives.com > Meteorite-list mailing list > [email protected] > https://pairlist3.pair.net/mailman/listinfo/meteorite-list ______________________________________________ Visit our Facebook page https://www.facebook.com/meteoritecentral and the Archives at http://www.meteorite-list-archives.com Meteorite-list mailing list [email protected] https://pairlist3.pair.net/mailman/listinfo/meteorite-list
