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DChartre

What is the acceptable grade of blank samples submitted by mining companies in grams per ton?

A consultant told me one can get 0.08g/t in salt water ? lol Laughing

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DC

fireguy · Site Admin Joined: 31 Jul 2007 Posts: 39

Hi DC:
Rocklabs sells a certified blank (which I think they may be out of):

http://rocklabs.com/current_ref_range.php

The certified value of this was less than 0.002 ppm gold.

That may be a good starting point for a blank grade.
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JonSnow · Posted: Wed Nov 11, 2009 3:22 pm Post subject:

I have had great results for over 5 years using SRM's but CDN Resource Laboratories.

Not only do they have blanks, but also have many fire assay standards to pick from.

Here is their link...

http://www.cdnlabs.com/
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DChartre · Posted: Mon Nov 30, 2009 7:56 pm Post subject:

JonSnow · Posted: Tue Dec 01, 2009 3:53 pm Post subject:

I welcome customers to supply blanks and or standard reference materiel if they wish.
My only requirement is that is certified.

http://www.cdnlabs.com/Certificates/CDN-BL-4%20Certificate.pdf

This SRM has recommended values of <0.01g/t in Au,Pt,Pd

Notice, that the round robin is made up of 10 major labs

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"This is a society where everyone can rise as high and as far as his own ability will take him" -Ronald Reagan