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Started by Tobi
How best can one determine the total elemental composition of a substance/sample after been roasted?
Last replied to by inOr
My understanding is that XRF is a semi-quantitative  technique.  Measurements of concentrations of elements are not ve...
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Started by Standartenfurer
In mining and exploration, geologists and sample preparation technicians take a lot of care to correctly collect, sub sample and prepare a powder (pulp) of the original sample (usually starting a original lot of 1s to 10s of kilograms). Often the las...
Last replied to by Auggie
Some very interesting comments.  I've been in the assaying business for over 30 years and it always starts with the bul...
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Started by xvayia
Hello,  I am early researcher in XRF analysis and am wondering if it is finally so necessary the binder in pressed pellets or not. Someone advised me not  to use it, due to  the effect in matrix. Is is possible? Most of my analyzed samples are ge...
Last commented on by xvayia
Thank you very much for you response!
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Started by Bill Fraser
Can somebody tell me the effective area/volume that is analyses by a hand held XRF? I'm experimenting with a Niton hand held GOLDD+ device reading some fine grained samples and want to get an idea of what proportion of the lot is being analysed with ...
Last replied to by Bill Fraser
Well the final outcome of this experiment is that I came to conclusion is that PXRF is not going to work on mineral sand...
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301
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Started by Zander Barcalow
I'm interested if anybody has tried out the Niton direct rock sampler (especially on drill core).See http://is.gd/BR0Cf2Would be particularity interested to see how this validated against half core samples
Last replied to by Oberstorm
I have not yet bought this clever tool (a battery grinder fitted with a dust collector) but this obviously something tha...
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264
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Started by John Koenig
I'm interested to hear from fellow members on the type/manufacturer of XRF instrumentation that are in use for the determination of the following bauxite parameters: Total Al2O3, Available Al2O3, Total SiO2, Reactive SiO2 and Fe2O3. We have a PIMA MA...
Last replied to by Ace Levy
The comments on the importance of sample preparation for accurate XRF analysis are well placed. The entire process chain...
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265
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Started by OberstGruppen
I'm looking for some published information relating to differences between press-powder and glass fusion preparation for nickel laterite deposits. If you point me in the right direction particularly the likely shortcomings of pressed-powder in terms ...
Last replied to by Unterstarm
The grain size is critical. On a project we worked on (not Ni laterite) variable grain size produced by LM5 pulverizing ...
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Started by Zander Barcalow
Is an adjustment factor required to convert specific gravity to bulk density? And if so is it based upon mineralogy?
Last replied to by Tony Verdeschi
Couple of other pieces of information necessary: Are the place, timing and time where you want Bulk Density to be measur...
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Started by Carmen Ibanz
Field measurements performed on soil, rock, ore, waste etc using instruments such as portable XRF may not always be as accurate as laboratory analyses, but they can be performed in large numbers with little cost. They may therefore help to select the...
Last replied to by Carmen Ibanz
The idea of using regular XRF's fused beads with a pXRF is good. It may help to improve measurements results and get the...
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Started by Sandeep Bisht
I have been calling suppliers of XRF analyzers trying to look for a handheld XRF machine that maintains good accuracy without having to prepare the sample i.e. no crushing and pulverizing. Essentially I would like to shoot a beam at a freshly blasted...
Last replied to by Maya Rothman
LIBS are less represented here because it is still by far more experimental than pXRF. Its promising points are a bette...
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Started by Sugar Watkins
Process mineralogy is a term that is used in a lot of contexts from process optimization to geometallurgy but its usefulness and application is often clouded by misconceptions that it is too hard or “our ore body is homogeneous and simple”. I fee...
Last replied to by Bill Fraser
Totally agree. I found most people in the minerals processing world do not value the fundamental research much. They wou...
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Started by Victor Bergman
Can an XRF analysis well high sulfide samples. High grade ore chips or flotation concentrate?
Last replied to by Carmen Ibanz
The portable XRF can very well handle mineral concentrate analysis very accurately such as columbite, tantalite, cassite...
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Started by Marshal Dienes
I am working on a V-Ti deposit that is hosted in a magnetite bearing gabbro and are planning open pit mining of the recently defined reserve. As mineralisation was visual I have abundant assays of the ore (several thousand) but very few (a few hundre...
Last replied to by Marshal Dienes
Yes seeing DL for S in the 100-200 ppm range on SOIL Mode with 100 second read time, and most rock material 200-1000+ppm...
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Started by Bill Fraser
Nice video, but as ever the diffraction get to do all the exciting stuff and us XRFers are left with analyzing cement and oil etc. Although, we do on occasions get to do some unusual tasks (see one of my recent posts) X-ray crystallography ...
Last replied to by Bob Mathias
Let’s distinguish two processes: data exportation and data importation. Of course I don’t have experience with all X...
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Started by David Kano
I´m new in this interesting in Data Interpretation in qualitative analysis and hope you can help me with this:I have a powder Ag sample (containing little quantity of Ag2O) and have performed a WDXRF qualitative analysis (Rhodium target) with the ...
Last replied to by David Kano
Thank you all for these valuable contributions! In fact, I also analysed this sample with the LiF200 crystal and these p...