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jjedwab
08:20:47 Wed
Jul 29 2009

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Gold as a byproduct of tellurium dearth?

Yes, times are changing (or would they?):

http://en.wikipedia.org/wiki/Cadmium_telluride

At the present time, the price of the raw materials cadmium and tellurium are a negligible proportion of the cost of CdTe solar cells and other CdTe devices. However, tellurium is an extremely rare element (1-5 parts per billion in the Earth's crust), and if CdTe were to be used in sufficiently large quantities (for example, to make enough solar cells to provide a significant proportion of cadmium telluride photovoltaics worldwide energy consumption), tellurium availability could be a serious problem.

  
Zooka
15:23:19 Sun
Aug 30 2009

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Re: Gold as a byproduct of tellurium dearth?

I saw a couple of articles on this subject several months ago. I wonder what happened to all of the tellurium separated from the gold in Calaveras County, California and Colorado over the past 150 years. Was it just burned off, or is is around in the dumps somewhere?

In a similar vein, I just got back from a long vacation out west. An amazing thing is happening in West Texas. THere are literally thousands of new structures, stretching for literally hundreds of miles. They are 180 foot diameter, three blade windmills. Literally thousands of them. So many in fact that many sit idle; there arent enough power lines to take their product yet, nor permits. But they are still putting them in. It's an amazing sight. The tips of the blades are moving at 400 mph they say. I wonder if this will change the weather. I wish I had stock in the companies putting them in.

-Z

  
Zooka
03:54:41 Mon
Aug 31 2009

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Re: Gold as a byproduct of tellurium dearth?

Good points, GW.
I think they ought to put the windmills on or by dams, with pumps in stead of turbines. They can take water that has run thru the turbines on the dam and pump it back up into the lake for recirculation.
Sure it is not terribly efficient; but the energy is free.
Still waiting for that super battery technology, arent we.
-Z

  
OldAuHead
01:07:21 Tue
Sep 1 2009

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Re: Gold as a byproduct of tellurium dearth?

Zooka,
There is a turbine, water shoot like you mentioned, it's near Chattanooga, TN @ Racoon MT.
They pump the water up to the top of the mountain, from the TN River @ low power demands, and let it flow back though a tunnel in the mt that is carved out of stone,. Runs through the turbines and transmits power. BUT TVA all ready had the transmission lines in place, thanks to taxpayer money via Congress.

  
OldAuHead
01:10:47 Tue
Sep 1 2009

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Re: Gold as a byproduct of tellurium dearth?

PS forgot the subject:
Reckon there is tellurium dearth in N GA??

  
OldAuHead
01:17:36 Tue
Sep 1 2009

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Re: Gold as a byproduct of tellurium dearth?

PPS
After raeding about the Stuff, I hope it's not in N GA gold..Stuff is VERY toxic, even deadly.
bout all I know
course guns aren't deadly, bullets are

  
overtheedge
03:42:21 Tue
Sep 1 2009

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Re: Gold as a byproduct of tellurium dearth?

Getting back to tellurium, the biggest hurtle for recovery of the syvanite/calaverite is economics.

There has to be enough ore to not only mine at a profit, but also pay for a refinery/smelter. Better figure roughly 20 years of production to get a reasonable return on the investment.

Why a smelter? Cause there tain't none in the US. The only producer gets recovery from copper refining. If you export the ore, will the pure metal be sent back? Remember, free market supply and demand.

Better read this:
http://minerals.usgs.gov/minerals/pubs/commodity/selenium/mcs-2009-tellu.pdf

  
overtheedge
19:31:08 Tue
Sep 1 2009

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Re: Gold as a byproduct of tellurium dearth?

Even if the economics are there for profit, another consideration is the EIS and all the environmental groups that will sue over dotting the I's and crossing the T's.

On this regard, take something out of the political science playbook. You never need a majority, just an effective majority that might be no more than a handful of individuals. Their weapon is emotional responses. As examples, cyanide extraction and The Pebble Project. Science need not apply. All that is needed is "What if scenarios." Fear is a potent tool to manipulate an ignorant society.

"Fear is the mind killer." Frank Herbert, "Dune"

  

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