Posts Tagged ‘#technology’

Wednesday, October 4th, 2017

Join Jamil Sader, (Bureau Veritas’ Corporate Geochemist) during Exploration ’17 for some insightful conversations and technical presentations.

Exploration 17Tuesday 24 October 2017 – 11:55-12:15

Advances in ICP-MS Technology & the Application of Multi-element Geochemistry

There have been several advances in ICP-MS analytical technologies in the last decade (2007 to 2017). Collision/reaction cell ICP-MS and triple quadrupole ICP-MS instruments can produce lower detection limits for select elements that experience interferences with a standard quadrupole instrument (i.e., Se and As). Triple quadrupole ICP-MS instruments in particular, can eliminate virtually all polyatomic or isobaric interferences for highly accurate measurements of some element isotopes systematics that are of great interest in mineral exploration, namely Pb/Pb. Laser ablation ICP-MS has become more popular as an effective analytical tool to measure mineral grain trace elements, which could assist in vectoring to mineralization or exploration drill targets. The ablation of a spot on a Li-borate fused glass disk paired with XRF analysis has also gained popularity as an alternative to total whole rock characterization packages that employ several separate digestions and analytical methods. While there have been several advancements in ICP-MS technologies in exploration geochemistry in the last decade, they have not been widely accepted or implemented. This slow adaptation could be due to the extended recession in the mining industry over the last 5 years, which is not currently over. It is also possible that standard ICP-MS data (i.e., no collision/reaction cell) is still fit for purpose. This stands in stark contrast to implementation of ICP-MS in the previous decade (1997 to 2007), which was transformational for the industry.

Consideration of all elements from large multi-element ICP-MS analytical suites for mineral exploration can be an extremely powerful tool in the exploration toolkit. The discovery of the White Gold district, Yukon is a prime example of how the utilization of soil geochemical data, when plotted spatially, can vector to gold mineralization. The presence of Au+As+Sb soil anomalies were key to delineating mineralization, especially when accompanied by publicly available geological, geographical, and geophysical data. Additionally, elements and element ratios not typically considered in Au exploration including Ni and U were utilized to determine the lithological and structural controls on mineralization. The availability of multi-element ICP-MS data was also useful in the discovery of the Cascadero Copper Taron Cesium deposit. Ore grade Cs was discovered only because Cs was included in the multi-element ICP-MS exploration geochemistry suite. Before the availability of ICP-MS, it is unlikely that this deposit would have been discovered.


Jamil_4WebWednesday 25 October 2017 – 11:05-11:25

Advancements in Analytical Geochemistry at Bureau Veritas Minerals

Several analytical firsts have been developed at Bureau Veritas Minerals. Among those is the implementation of laser ablation ICP-MS analysis paired with XRF for routine geochemical analysis. Benefits include the elimination acid-related digestion issues, no upper limits, and total whole rock characterization with detection limits lower than many acid digests. Secondly, Artificial Neural Network modelling of data collected from various spectral devices such as Fourier Transform Infrared Spectroscopy (FTIR), has enabled prediction of geochemistry, geomet, mineralogy, mine data and other physical properties at extremely low sample costs. Lastly, BV has developed an innovative software application, MineDSI, which allows visualization of, and interaction with, several types of down-hole data in one location.

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