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How do they form? — Omegatron 01:15, 26 June 2007 (UTC)
I think this needs a mention of why the Holtermann Nugget is not regarded as a nugget, since it weighed far more than the Welcome Stranger. -- Ozhiker ( talk) 08:06, 24 September 2009 (UTC)
Someone added this assertion, which needs a good cite. I've heard this claimed, but my guess it's rare to nonexistent. Nuggets (ime) are simply masses of native gold that get washed into streams and get rounded off, and you see them in all stages from near-pristine to gold dust. On average they get broken up as they get further downstream (ime). -- Pete Tillman ( talk) 23:48, 28 October 2010 (UTC), gold geologist
Peterlewis ( talk) 08:41, 29 October 2010 (UTC)
Well, try this ref from Mongolia for a pic of a cold welded nugget
http://www.mine.mn/gold_nuggets.htm
Peterlewis ( talk) 19:45, 29 October 2010 (UTC)
And here it is in English [1]:
* For the first time microbes have been shown to tinker with gold deposits. * Bacterial biofilms dissolve gold, which makes it available for re-depositing in purer form elsewhere.
and [2]
And [3]
So if you want to use this as a source -- we'll need to change the text to agree. See what you think. Best, Pete Tillman ( talk) 19:55, 30 October 2010 (UTC)
This unsourced speculation about particles welding together in streams shouldn't be in the article. It might happen with 100% pure, dry, clean gold, or in a goldsmith shop under a hammer blow, but it's not likely to be common underwater. Where there's, you know, *water* in between the surfaces. Not to mention copper/silver sulfide partial tarnish films due to the alloyed metals. Rep07 ( talk) 04:08, 12 August 2012 (UTC)
Are such nuggets valued for significantly more than the gold present, as collectors' items due to their rarity? If so, are there any available examples of the sort of prices large nuggets have sold for?-- Jrm2007 ( talk) 07:19, 25 December 2010 (UTC)
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This page states A 2007 study on Australian nuggets ruled out ... bacterial concentration, since crystal structures of all of the nuggets examined proved they were originally formed at high temperature deep underground.
But the page for the bacteria Cupriavidus metallidurans states that it is essential (alongside Delftia acidovorans) in the formation of gold nuggets. Am I missing something here, or are these pages contradicting each other? 192.77.12.11 ( talk) 07:55, 30 October 2023 (UTC)
This is the
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Gold nugget article. This is not a forum for general discussion of the article's subject. |
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How do they form? — Omegatron 01:15, 26 June 2007 (UTC)
I think this needs a mention of why the Holtermann Nugget is not regarded as a nugget, since it weighed far more than the Welcome Stranger. -- Ozhiker ( talk) 08:06, 24 September 2009 (UTC)
Someone added this assertion, which needs a good cite. I've heard this claimed, but my guess it's rare to nonexistent. Nuggets (ime) are simply masses of native gold that get washed into streams and get rounded off, and you see them in all stages from near-pristine to gold dust. On average they get broken up as they get further downstream (ime). -- Pete Tillman ( talk) 23:48, 28 October 2010 (UTC), gold geologist
Peterlewis ( talk) 08:41, 29 October 2010 (UTC)
Well, try this ref from Mongolia for a pic of a cold welded nugget
http://www.mine.mn/gold_nuggets.htm
Peterlewis ( talk) 19:45, 29 October 2010 (UTC)
And here it is in English [1]:
* For the first time microbes have been shown to tinker with gold deposits. * Bacterial biofilms dissolve gold, which makes it available for re-depositing in purer form elsewhere.
and [2]
And [3]
So if you want to use this as a source -- we'll need to change the text to agree. See what you think. Best, Pete Tillman ( talk) 19:55, 30 October 2010 (UTC)
This unsourced speculation about particles welding together in streams shouldn't be in the article. It might happen with 100% pure, dry, clean gold, or in a goldsmith shop under a hammer blow, but it's not likely to be common underwater. Where there's, you know, *water* in between the surfaces. Not to mention copper/silver sulfide partial tarnish films due to the alloyed metals. Rep07 ( talk) 04:08, 12 August 2012 (UTC)
Are such nuggets valued for significantly more than the gold present, as collectors' items due to their rarity? If so, are there any available examples of the sort of prices large nuggets have sold for?-- Jrm2007 ( talk) 07:19, 25 December 2010 (UTC)
Hello fellow Wikipedians,
I have just modified 2 external links on Gold nugget. Please take a moment to review my edit. If you have any questions, or need the bot to ignore the links, or the page altogether, please visit this simple FaQ for additional information. I made the following changes:
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Cheers.— InternetArchiveBot ( Report bug) 21:54, 13 January 2017 (UTC)
This page states A 2007 study on Australian nuggets ruled out ... bacterial concentration, since crystal structures of all of the nuggets examined proved they were originally formed at high temperature deep underground.
But the page for the bacteria Cupriavidus metallidurans states that it is essential (alongside Delftia acidovorans) in the formation of gold nuggets. Am I missing something here, or are these pages contradicting each other? 192.77.12.11 ( talk) 07:55, 30 October 2023 (UTC)