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Gold Prospecting Forums - General => Scientific Journal => Topic started by: idled on May 22, 2014, 08:00:54 PM

Title: Gold found in coal
Post by: idled on May 22, 2014, 08:00:54 PM
This is a very interents artical I found today.

Gold in coal raises shining prospect
STEVE CONNOR , Science Correspondent Monday 02 August 1993
   
   
   
   
   
   
 Shares: 7
 
GEOLOGISTS have found significant quantities of gold in Welsh coal and believe the discovery may prove to be more than a scientific curiousity.
energyandcapital.com/Coal_IndustryAlthough the concentrations are small - a fraction of a gram of gold in every ton of coal - the scientists believe it may one day prove commercially viable to mine coal for its gold content.
The average concentration of gold was 0.04 grams per ton of South Wales coal but the two researchers, Rod Gayer and Professor David Rickard, at the University of Wales, Cardiff, found gold concentrations as high as 4.42 grams (1.55oz) per ton in the ash left over from burning coal.
Professor Rickard said higher concentrations may be possible and because coal is such a huge geological deposit, the prospect of extracting it commercially 'is worthwhile looking at a little more'.

Writing in today's Nature, the researchers say it is the first time that gold has been found in coal. 'One of the amazing things is that we can see the gold under a microscope and take pictures of it,' Professor Rickard said yesterday.

British Coal's stockpile of coal is about 13 million tons, worth about pounds 351m at current prices. Assuming a gold content of about the average found in Welsh coal, this means the stockpile contains about half a ton of gold, worth nearly pounds 5m.

Extraction would not be economic on these figures, but Professor Rickard says that the advantage of coal is that it can be burned first and then the ash could be processed relatively cheaply to extract its gold.

'We may not have found the highest value for the gold concentration in coal and when you burn coal you end up with a higher concentration still in the ash.'

Where the gold came from is a mystery. Professor Rickard suggested that the ancient plants that were ultimately turned into coal probably concentrated the gold that was initially present as a watery solution.

Title: Re: Gold found in coal
Post by: idled on May 22, 2014, 08:03:26 PM
The reason I posted the above artical was this piece of coal that I
was given today by a freind. It was found in a coal pit in
Northern Alberta.
I was wondering if anyone else has ever seen gold in a lump of coal.

(http://gpex.ca/image-sharing/thumbs/img4577.jpg) (http://gpex.ca/image-sharing/images/img4577.jpg)

Title: Re: Gold found in coal
Post by: mcbain on May 22, 2014, 08:23:48 PM
Hi IdledI never seen gold in a lump of coal but do believe is possiple I have not seen a lump of coal in 50 some years.But go back too where coal came from same as DiamondsThe hard part would be trying too refine enough burnt coal too make it worth while.India or china coal fired power plants would be a good place.Or some of the states still burn coal to generate power.oh for the time too check these things out.Luck mcbain.
Title: Re: Gold found in coal
Post by: idled on May 22, 2014, 08:40:09 PM
Can you imagen checking some of the ash piles from the 1800's, kind of boggles the mine on how much gold
many have been thrown away back then.
Title: Re: Gold found in coal
Post by: 3 N 1 PRODUCTIONS on May 23, 2014, 12:13:10 PM
I don't know how true it is, but I've heard of gold deposits found under coal beds in WA state.
Title: Re: Gold found in coal
Post by: bmgold on May 27, 2014, 09:55:49 AM
I've never seen gold in coal but have seen many lumps of coal with streaks of yellow sulfur that looked like gold.  I hope that is not what is in your piece of coal.  Most of the coal fired power plants around here (Pennsylvania, USA) are being shut down but many people still heat their house with coal.  Years ago, I hauled fly ash from a coal fired power plant (20 tons or so each load) and wonder how much gold might have been in those ashes.

bmgold
Title: Re: Gold found in coal
Post by: goldave on November 08, 2014, 09:52:09 AM
hmm, the more coal or near coal that goes through sluice  seems like more gold I am recovering as the flat shape makes it stay in the sluice, many people say it is too light compared to gold but I have been following this and now am into recovering nuggets along with fines / nuggets are darker because of the silver content, a nugget is a nugget, N Alberta river, hmm?
Title: Re: Gold found in coal
Post by: sour dough on November 15, 2014, 07:47:29 AM
If coal and shale's are from the oroginic source then coal could contain gold. It would have to be trapped in pyrites(Arsenic and Iron) while organic material was being deposited. Unless you own a spectrometer you will not see the gold as it is a micron size particle, try like a 600 power to even see the gold. As for accumulating at the bottom of a coal incinerator I think not because of it's small size it is likely been vaporized. Not sure how one could separate coal (carbon) from the Gold but I am sure it can be done.
Title: Re: Gold found in coal
Post by: fatkat on April 11, 2015, 12:38:39 PM
looks like iron pyrite to me .....common in coal over here [uk]
Title: Re: Gold found in coal
Post by: Vagadero on April 19, 2015, 04:02:30 PM
Just a typing error "4.42 grams (1.55oz) per ton"
But: 4.42 grams = 0.15591091181 oz only
Title: Re: Gold found in coal
Post by: RngdMtrx on May 08, 2015, 05:50:42 AM
thanks for sharing i will keep an eye out, i have an old coal yard, from cn, not far from where i live. if i ever find anything ill let you guys know.
Title: Re: Gold found in coal
Post by: AuTiger on May 10, 2015, 04:32:16 AM
Found this yesterday digging under an Old uprooted Tamarack, lots of good size river rock and when it was wet at 1st I thought it was Quartz? More like a conglomerate imbedded with coal. Tiny Au specs in Black areas. Poser for me! Anyone know this type of Rock?

(http://gpex.ca/image-sharing/thumbs/p1000276txt.jpg) (http://gpex.ca/image-sharing/images/p1000276txt.jpg)
Title: Re: Gold found in coal
Post by: Weary1 on May 10, 2015, 05:24:07 AM
I have a buddy that finds gold on the top of coal seams exposed in river or creek banks. I've been wanting to check this out myself in a few locations.
Title: Re: Gold found in coal
Post by: AuTiger on May 11, 2015, 05:31:31 AM
I have a buddy that finds gold on the top of gold seams exposed in river or creek banks. I've been wanting to check this out myself in a few locations.

Sorry, not getting the correlation here? Just thought some of the Rockhounds could lay a name to this type of Rock. I'm quite sure the Black areas are imbedded Coal? <-thinking->
Title: Re: Gold found in coal
Post by: aumbre on May 11, 2015, 04:07:23 PM
AU Tiger,I thought it lookerd like quartz vein material or maybe quartz rich schist type stuff. A better picture on a freshly broken face would help.
Title: Re: Gold found in coal
Post by: AuTiger on May 12, 2015, 05:09:47 AM
Thanks Aumbre, will crack it open soon!
Title: Re: Gold found in coal
Post by: AuTiger on May 16, 2015, 03:39:37 PM
Aumbre, Cracked the top 1/3 off, 3 or 4 flakes fell out, don't know what I lost on the Garage floor?? Only used hammer and chisel, Rock looks same after splitting, but no Coal!
(http://gpex.ca/image-sharing/thumbs/p1000288.jpg) (http://gpex.ca/image-sharing/images/p1000288.jpg)
Title: Re: Gold found in coal
Post by: aumbre on May 18, 2015, 04:19:45 PM
Sorry, really can't see much from the photos (glare?) so same old guesses. Is the dark material earthy? or is some the chunky stuff glassy or?

3 or flakes of mica or gold?
Title: Re: Gold found in coal
Post by: AuTiger on May 18, 2015, 07:52:39 PM
Would the pic not enlarge for you? The Black is crunchy but pickable. Au is typical Alberta Fine, but flat! Was hoping you would have a better view of the bigger portion of the Rock, It really looked out of place amongst the larger round river rock, was hoping it contained some Quartz? Thanks