ICP-AES vs ICP MS ( assaying ) Back in 2011 - Langmuir seen - ICP MS - analysis
A 0.5 g sample is digested in aqua regia at 90°C in a
microprocessor controlled digestion block for 2 hours. The solution is diluted and analyzed
by ICP/MS using a Perkin Elmer SCIEX ELAN 6000, 6100 or 9000 ICP/MS.
WEB SEARCH -
ICP-MS provides the added bonus of being able to detect the ions themselves rather than just the photons (-OES and -AES), as ICP-MS mates the plasma coupling technology with mass spectrometry. The markedly higher sensitivity of ICP-MS allows for detection limits in the parts per trillion (ppt) range
Why is, ICP MS important ?
It's better than, ICP AES
What acids were used in 2011 ?
Agua Regia
How would it apply to, two types of nickel ores ?
olinines + sulphides ?
Aqua Regia uses several kinds of acids,
ensuring higher solubilty.
If higher solubility then, married with, ICP MS analysis
ICP MS can now - zero in on.... ion or ionic bonds
Far more accurate....whereas, ICP AES can't detect ions.
WHY ELSE IS THIS IMPORTANT ?
If a deposit has two kinds of nickel, sulphide and
silicate ( olivine ) the olivine nickel is in a state of,
nickel 2 chloride salt.
ICP MS - would detect the - ionic nickel in - olivines.
Thus... increasing grade percentages.
CANADA NICKEL ( PEER )
Used a different kind of assaying -
June 27 2022
Analysis for precious metals (gold, platinum and palladium) are completed by Fire Assay while analysis for nickel, cobalt, sulphur and 17 other elements are performed using a peroxide fusion and ICP-OES analysis
As we can read,
only peroxide
ICP OES ( totally diff lab alaysis)
ICP OES - WHAT DOES IT DO ?
Inductively Coupled Plasma Optical Emission spectroscopy (ICP-OES) is an analytical technique used to determine how much of certain elements are in a sample. The ICP-OES principle uses the fact that atoms and ions can absorb energy to move electrons from the ground state to an excited state.
AND THERE IT IS...
ICP OES detects at the ion level.
Accommodating any potential - silica nickel.
which if found... increases grades.
Will i fret over tihs ? lol
I look at it this way...
Langmuir has seen lots of drilling over the years....
Former cores seen the ICP MS with aqua regia
While the newer drills to bring the deposit into compliance
seen Sodium peroxide ICP AES.
Most likely.... these were infilling drills.
Married with.... former drill core assays.
If i were Prez...?
The question i would be asking is...
Were the newer drill assays inline with former ?
One would need to columbize former with newer in
an interpolation value comparision.
Were the new infill drilling values same as, former ?
Keep in mind -= former 2011 used - ICP MS.
Or were there slight or gross way factors that newer
infill drills were perhaps a tad ... lessor than former ?
If so... then, sodium peroxide acted as a reducer...
SUPPOSE -
If lessor.... such would bring down the total tonnage
of potential nickel...especially when dealing in 1 billion tonnes.
Keep in mind...
Only ( 0.10% ) would be needed to take EVNI into the
same metal nickel tonnage as CNC - 3.5 million metal tonnes
Former reports point out - 15% of hte nickel is found in the silicates.
My goodness... if one could capture a good .10 % - boom.
EXAMPLE -
0.25% + 0.10 %
= 0.35 %
X 1 BILLION TONNES
= 3.5 MILLION TONNES METAL NICKEL
= 7.7 BILLION LBS NICKEL
Hence.... take a few of the newer cores...
perform an ICP MS using ( plain peroxide )
and then... use aqua regia using ICP MS.
SUPPOSE JUNIOR DID A FEW RE-ASSAYS -
Were newer assaying methods....
- able to increase grade ?
- able to pick up more silicate chloride nickel ?
How many new drills using - peroixe - ICP AES
vs
former drills using aqua regia acids and ICP MS
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What i also find interesting is...
CNC's metallurgy report was only a synopsis
of, SGS's report.
I have yet to read what acids SGS used, to perform it\s
metallurgy... which is rather important...
HOW SO...
Well... .suppose EVNI performs their metallurgy report,
uses a firm which uses - different acid - that suddenly finds
more nickel in the silicates ?
Would it ever be revealed in terms of, found more ?
Or.. .would the lab be clueless and think... they're recoveries
were exceptional... due to better ore geology...lol
Others may find this topic rather silly...
But few years ago i was in a lithium stock...
They were trying to figure out what type of lithium was in the ores...
At first they thought it was only carbonate...
Yet... pointing out the lithium turned to a salt at top the basin
suggested there was also a lithium salt present.
Two kinds of lithium.
Which is really important to address...
When it comes to extraction and metallury.
I laughed when they had nearly 100% recovery.
I said to myself...
They must have used a diff acid... in pilot tests,,,
and as so... both carbonate lithium and salt lithium
solubilized - thus... increasing all the more lithium recoiveries.
Which... one has to ask....
If not performed properly at - intital - lab assay phase...
prior to metallurgy...
Then... perhaps some miss the - extra - grams or percentages
when at the metallurgy stage - for cause of, metallurgy
too shy or other.. .to say... our own reocveries are higher than the
actual... intital lab assays...wink.
So... i'd love to see cnc's - sgs report - to see what sgs used to
run extraction tests....lol
Furthermore...
Whne speaking about co2 sequestration....
would any of these co2 ores be mixed with - concentrates...?
lol
But... that's another suvject.
Wink.
So as one can see....
there's a significant diff using - ICP AES vs ICP MS
Using aqua regia vs sodium peroxide vs just plain peroxide.
Yes.... i like to squeeze every PPM / PPB out of every resource.
Maximize shareholder value.
Now... if i haven;t convinced Sean, with these talking points -
I don't know what would.
Such makes a very compelling case in which to pull a few
newer drill cores and retest -
After all.. why not use the same acids and ICP MS as former
drills right ?
Cheers....