Assaying, Microscopy, Mineralogy & XRF/XRD

Assaying, Microscopy, Mineralogy & XRF/XRD

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For those who are not aware of this choice, the Mining mode of pXRFs (Handheld Portable XRF) is not supposed to fit the needs of the Mining activities, nor the Soil mode the needs of Environmental activities. The Mining mode is expected to offer a...
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Last replied to by MattEck
I've not done any calibrations ever as we are just looking for patterns and not really values. My concern with calibrations to matrix changes is that they are not practical in an exploration environm...
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Am wanting to develop a method for my company where our rig geos can use pXRF (portable XRF) on (Reverse Circulation Drill) RC chips as they are logging with the rig (so an on-site method). Most of my research indicates pulverised samples are better...
Last commented on by
65 mesh
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Started by Helena Russell
How much are automated mineralogy techniques applicable beyond mineralogy and how much of the use of automated mineralogy data ‘beyond mineralogy’ has beento look at the rock properties that can be derived from having quantified the minerals pres...
Last commented on by David
Automated Mineralogy...
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Started by Maya Rothman
I am looking for the full manual of Delta Premium XRF. I face a problem in the Bluetooth pairing with Trimbel GPS
Last replied to by David
Here are the portable, handheld and desktop XRF user manuals:http://911Metallurgist.com/C/DELTA_Family--User-Manual-Canadian.pdfhttp://911Metallurgist.com/C/DELTA_PC_Software--UI_Guide-Manual-Canadia...
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About Exponential correction in calibration lines for Panalytical Cubix XRF applications: Could somebody explain how does this work on correcting a calibration line? It corrects for adsorption of fluorescence but i don't find enough information abo...
Last replied to by Helena Russell
My own experience as a cement chemist shows that a calibration using the classic model with alphas computed for median concentration values of your product using 1:10 dilution gives excellent results....
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Is it possible to analyze/assay rhodium in samples if your WD-XRF has a Rh target in the tube? I am presuming that it is not possible unless one has a tube with a different tartget element. If anyone has insight on this, it would be appreciated.
Last replied to by
The comments by the contributors to this discussion do a good job of highlighting the advantages of both the WDXRF & EDXRF systems. Among these are the flexibility to optimize the instrument parameter...
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Started by Helena Russell
We have been analyzing colemanite (a secondary mineral that forms by alteration of borax and ulexite) by WDXRF (except B2O3) then finding the B2O3 content by means of wet chemical analysis. And the wet chemical analysis part lasts a little long. Of c...
Last replied to by Victor Bergman
I would suggest that colemanite with its high B2O3 content should be almost self fluxing. The colemanite should decompose releasing H2O to make a glass of sorts CaO.xB2O3 and these will melt in the te...
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I am interested in hearing people's views on pressed pellets. What is the maximum pressures you use? What is the most common pressure you use? What is the minimum pressure you use?
Last replied to by
In Summary: Following are the Key Parameters responsible for preparing a Pressed Pellet to obtain an accurate and reproducible XRF results; Selection of binder compatible to the sample matrix. To ...
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According to our procedures, for a long period of time, we have been preparing synthetic calibration standards in our Lab to develop applications for XRF analysis of various matrix samples. Here the wet chemical analysis facilities are also availabl...
Last replied to by
Valid points put across by Mr. Ali...the last note mentions that the Fused bead method had to be used...PANalytical's WROXI works in this fashion, all are synthetically prepared. In one installation, ...
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Started by David
For a great Portable XRF for Geologists training course contact https://ca.linkedin.com/in/cynthiadawncollins
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Started by Maya Rothman
Can anyone suggest good ref to explain the difference between Large Drift Detector (LDD) and Silicon Drift Detector (SDD)? In regard to handheld field XRF unit.
Last replied to by
The main difference between the two options for detectors (SDD vs. LSDD) is that the LSDD has a larger area resulting in, ideally, more counts and shorter test times for the larger detector. Between d...
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Started by Maya Rothman
Hi all, i am still new user of Delta premium XRF I want to know more about the interpretation of the analysis spectrum. Can anyone share with us something from his experiences. thanks alot
Last replied to by
May,Looking at spectra is of key interest at least in two cases:your instrument detects and analyses an unexpected element (one that is not usually found in your geological context, for instance),you ...
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I am curious to hear among you, and hoping for user reviews as to who've been using those Handheld XRF instruments whether it matched your expectations and suited your need? Would you recommend them to other potential users? pXRF instruments fe...
Last replied to by David
My Delta Pro fantastic! http://www.911metallurgist.com/blog/compare-x-ray-xrf-to-laboratory-measurement-reliabilityHere is an XRF Brand Comparison Table.
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Started by David
Is there such a thing as a mini XRF, I mean an XRF with dimension around 10cm x 10cm x 10cm?
Last replied to by
INEL makes a mini XRD close to these dimensions.
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I need an Analysis for platinum in rock samples and hoping an XRF can shot platinum. Does anyone know if there is any portable or handheld analytical equipment that can quantitatively analyze Platinum in rock samples at less than 1ppm? I do not kn...
Last replied to by
With PGEs and with Au, detection limit is not the most important feature. In many cases, their distribution is highly heterogeneous, with frequent nugget effects. In this case, the pXRF beam may miss ...
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Started by Helena Russell
I am thinking of travelling to central/west Africa with a pXRF device for a short project assessment inspection trip. Have used them for several years, purchased two, and travelled to PNG with one with no problems. Has anyone had trouble entering/exi...
Last replied to by Helena Russell
Thanks guys for the useful and interesting responses. This will help my travelling with this Portable XRF.
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Shows how X-ray micro- and nano-CT provide for quantitative mineral exposure/liberationhttp://www.sciencedirect.com/science/article/pii/S0892687512001240Hard to understand why is there apparently so little interest in this technology for other applic...
Last replied to by Victor Bergman
I know of a lab that has largely ignored X-ray CT scanning and 3-d liberation data because we have a huge comparative database of 2-d liberation data from SEM-based sources. For mineral concentratio...
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Started by JohnnyD
Different heavy sand placers are mainly composed with Iimenite, Zircon, Rutile Monazite and Xenotime. On all X-rays diffraction patterns, I still have high intensity “d-spacing” 2,34 - 1,65 - 1,48. which don't correspond to the here above mineral...
Last replied to by JohnnyD
No, I didn't perform Rietveld refinement. I followed an XRD specialist who wrote :"Peak height can be misleading as it can change depending on crystal shape and preferred orientation of the sample dur...
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I had an interesting discussion with an applications specialist in XRD who was asked a question regarding 'amorphization' by inappropriate grinding. Their response was that this is a red herring, stating the age-old argument that peak-broadening is ...
Last replied to by
I have seen this effect when grinding dry versus grinding with an appropriate fluid (ethanol). It falls within the 'common pitfalls and myths' learning experiences. Nice share.
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Am needing help on How to enrich alumina in low grade bauxite Al from 42% to 46%, from a low grade bauxite mines with Al 43%, Silica 7.5 %, Iron 28% reserves 15 million tonnes, with Al2O3 43%, can anybody suggest a beneficiation process to ...
Last replied to by Victor Bergman
I agree, knowledge first. First step would be to "know your ground", full majors elemental analysis (Na if you can, K, Mg, P, Ca, Ti, Cr, Zr, Ni). Is your reported Fe FeO and Si SiO2?Then XRD, but yo...

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