Assaying, Microscopy, Mineralogy & XRF/XRD

Assaying, Microscopy, Mineralogy & XRF/XRD

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Automated Mineralogy Methods QEMScan
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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...
X-ray Computed Tomography
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Started by
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...
Minerals determination with X-Rays diffraction XRD
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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...
Amorphization in Grinding
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Started by
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.
Enrich Alumina from Bauxite
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Started by
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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