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Gold/Mining/Energy : Naxos Resources (NAXOF) -- Ignore unavailable to you. Want to Upgrade?


To: Richard Mazzarella who wrote (19664)8/5/1999 10:28:00 AM
From: Chuca Marsh  Respond to of 20681
 
I think you better read this, and wonder if such information is available to the folks at Global and MG and our favorite ...MAXAM:
( Rare Earths are what we are talking about ) RE:
NAXOS Due Dilly, as I see it, we have two extraction methods talked about and BOTH seem standard..I stretch and say is...THE LITHIUM TALK BASED UPON OUTPUT OF THE UNDISCLOSED PILOT PLANT results, and tweeking? SEE the EXTRACTION TALK under 2 uses <not in full text> at the above top left area above the TEXT word header-USES< also be aware that EXTRACTION last sentance says HYDROCHLORIC ACID which is the standard 2 chemicals mixed in AQUA REGIA>< Combo Nitric Acid and Sulphuric Acids>< which are usually AA finished see BMD results with Agua Regia last week with the AA finish, this is important because AA finish is a SFA type procedure acceptable to the Alberta Stock Exchange which all of us here are so aware of>:
freeyellow.com
the above info is from the later 5 year compilation of thje OLD DEFUNCT US Department of the Interior sub part entity called the BOM- Bureau of Mines which is now called the BLM- Bureau of Land Management functions changed somewhat. RE:
freeyellow.com
Chucka
birchmountain.com
Analytical Method Development

In March, 1999, Birch Mountain initiated an in-house program to develop analytical methods to resolve inconsistencies between SEM/EMP imaging and precious metals analysis, and to address the problem of repeatability. By adjusting experimental conditions, by carefully recording experimental conditions, and by systematically varying key parameters, Birch Mountain is deliberately striving to identify and control the variables causing the erratic results. We are using Birch Mountain's laboratory, and facilities and analytical instrumentation available in the Department of Geology at the University of Calgary. Significant results from Birch Mountain's recent in-house work are given in Table 5. Atomic absorption measurements carried out by Birch Mountain at the University of Calgary utilized three point standard additions calibration and deuterium arc background correction.

Table 5. Summary of Birch Mountain in-house analytical method development results, 1998 bulk sample BJ98-008.



Digest




Extraction




Collector




Analysis Type




Au (g/t)




Pt (g/t)




Pd (g/t)





Reductive




Static




None




FA/ICP3




0.593




0.132




0.015





Caustic




Bottle roll




Adsorption




FA/ICP




0.008




0.002




1.01





Acidic




Bottle roll




Adsorption




FA/ICP




0.008




0.004




1.90





Caustic




Bottle roll




Adsorption




FA/ICP




0.009




nd




0.558





Acidic




Static




Chiddey




FA/ICP




0.0008




nd




0.427





Acidic




Static




None




AA4




4 to 6




na




na





3Fire assay - ICP; Loring Laboratories Ltd., Calgary, AB.

4Atomic absorption, University of Calgary, Calgary, AB.

na — not analyzed; nd — not detected

Although Birch Mountain's testing has shown important values of gold and palladium, we have not yet been able to reproduce "hits" despite careful attention to replicating the conditions and procedures of runs which yielded positive results. We can not yet explain this lack of repeatability. It is unlikely, however, that contamination is responsible because we obtain similar results using different methods and laboratories. Results for sample BJ98-008 are summarized in Table 6.

Table 6. Summary of assay and leach results, 1998 bulk sample BJ98-008.



Method




Laboratory




Au (g/t)




Ag (g/t)




Pt (g/t)




Pd (g/t)





FA/ICP




Bondar Clegg




0.003




1.4




<0.005




0.003





INAA




Bondar Clegg




<0.002




<2




na




na





Aqua regia digest/AA




I M and E




0.08




na




11




nd





Aqua regia digest/AA




Birch / U of Calg.




4 to 6




na




na




na





Reductive pre-treatment, FA/ICP




Birch Mountain/ Loring




0.593




na




0.132




0.015





Bottle roll, column adsorption, FA/ICP




Birch Mountain/ Loring




0.008 to 0.009




na




0.002 to 0.004




0.558 to 1.90





Aqua regia digest, Chiddey precip, FA/ICP




Birch Mountain/ Loring




0.0008

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