converting ppb of Au to g/t Au

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converting ppb of Au to g/t Au

Postby geo78 » Sun Dec 12, 2004 1:56 am

I got some rocks analysed and results showed an average of 15 ppb Gold. I'm trying to figure out how to confert ppb to g/t (grams per ton). Any ideas?
geo78
 

Postby Guest » Sat Mar 26, 2005 7:23 am

15 ppb means 15 parts in a billion parts, for example 15 g Au/ 10^9 g rock. Unfortunately, your ton (assuming a metric ton) is 10^6 g of rock, so you have 15 milligrams of gold, a flyspeck.

Sorry, but if you bought the mine, you GOT the shaft. :(
Guest
 

Re: converting ppb of Au to g/t Au

Postby tom bowens » Tue Jan 22, 2008 10:33 am

geo78 wrote:I got some rocks analysed and results showed an average of 15 ppb Gold. I'm trying to figure out how to confert ppb to g/t (grams per ton). Any ideas?
15 ppb is 0.015 grams per tonne gold. 1000 ppb (1 ppm) is 1 gram per tonne.
tom bowens
 

Re: converting ppb of Au to g/t Au

Postby mettyc » Wed Oct 03, 2012 12:30 am

There's 0.02 g/ton in most fresh lake water!
mettyc
 

Re: converting ppb of Au to g/t Au

Postby BillK » Mon Nov 12, 2012 10:28 am

I submitted a sample for gold analysis. The sample was screened and each fraction was weighed and assayed for gold. Taking one fraction for example: It weighed 24 grams and the gold content was 15 ppb. How do I convert that to g/t? And how do I calculate the gold content of the total sample?
BillK
 


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