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 Post subject: Re: Russian impact diamonds
PostPosted: Sun Sep 23, 2012 5:23 am 
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Joined: Fri May 14, 2010 2:57 pm
Posts: 93
Location: wallasey, United Kingdom
Well, that kept us excited for a day or two! I was hoping that a new extra hard material could revolutionize diamond manufacturing! Talked to some friends in Antwerpen, they weren`t even worried when the first news came out!


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 Post subject: Re: Russian impact diamonds
PostPosted: Tue Sep 25, 2012 6:59 am 
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Joined: Sun Jun 28, 2009 9:56 am
Posts: 1220
just to summarize:

meteoritic genesis of diamond is related to collisions.

meteoritic diamonds are microscopic (from nanometers up to millimeters) and polycrystalline. Industrial quality, not gem quality.

they may be found in some impactites: formation in terrestrial carbon-rich rocks when these are impacted by a meteorite. For instance diamonds in impactites of the Popigai impact crater (Russia), and in the alluvions that came from it. Diamond bearing impactites were discovered in other impact craters around the world (ukraine, germany, canada)

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they may be found in some meteorites: formation inside a carbon-rich meteorite (carbonaceous chondrites, ureilites, some siderites) when it undergoes collisions in space or when it impacts the ground.
For instance: diamonds in the Canyon Diablo siderite meteorite found in Arizona (USA), diamonds in carbonaceous chondrites meteorites found in Antartica, diamonds in ureilite meteorite found in Russia...


another type of extraterrestrial genesis? A recent hypothesis suggest that the polycrystalline variety of diamond known as carbonado might have originated from the explosion of a supernova (later falling on earth as a meteor)

Lucy in Space with Diamonds!


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