The benefits of multicomponent mineralogical analysis – an example from the Isortoq Fe-V-Ti deposit.

The benefits of multicomponent mineralogical analysis – an example from the Isortoq Fe-V-Ti deposit.

The R500 Isortoq project in South-West Greenland contains two titanomagnetite-rich troctolite veins striking 15 km with an inferred resource of 70 Mt and potential products of Fe, Ti and V. As with many modern exploration assessments there is a need to quantify the mineral proportions of the ore, along with the key mineral carriers of the target elements. For any complex ore where the target elements are hosted at different concentrations, in different minerals, this process of characterisation usually necessitates using multiple techniques. Generally, the concentrations of vanadium in vanadiferous titanomagnetite deposits are low (0.3 – 1.9 %V2O5) and mostly contained as solid-solution with vanadiferous titanomagnetite. It is normally recovered as a co-product with major elements Fe and Ti, which themselves may be hosted by multiple other phases. As such the assessment of mineralogy particularly benefits from combining techniques to resolve the overall mineralogy, trace element and major element deportment and liberation characteristics (Figure 1). Figure 1: Comprehensive Mineralogical Characterisation In isolation, any one of these techniques would be insufficient. Although deductions may be made, assays on their own...
Job Opportunity – Laboratory Technician

Job Opportunity – Laboratory Technician

Thank you for your interest in this position. However, applications are now CLOSED. A position is available for a Laboratory Technician working in our busy sample preparation laboratory. MAIN PURPOSE The postholder will work under supervision to assist in the preparation of sections from geological and construction materials for microscopic analysis. This is a position that will require routine operation and maintenance of precision machinery to cut, grind and polish materials. The postholder will also record and prepare samples for routine mineralogical and petrographic tests, including weighing and sieving. LOCATION This post will be based primarily at the company office at Redruth. The postholder will also be required to collect and deliver materials and occasionally use other sample analysis/preparation equipment based in the south-west region (Cornwall & Devon). To apply, please see the application pack here – LabTech_JobAppPack_30-01-19 – or if you experience problems then request one by email to petrolab@petrolab.co.uk We look forward to receiving your application! The closing date for submission of applications is 12:00 noon, Monday 18th February...
Petrolab are Proud Sponsors of #ProcessMineralogy2018

Petrolab are Proud Sponsors of #ProcessMineralogy2018

Petrolab are proud sponsors of Process Mineralogy 2018 in Cape Town this month and have the privilege of presenting both at a pre-conference workshop and within the main conference. The workshop is organised by Zeiss microscopy, focussed on “New developments in Automated Mineral Analysis” and has gathered together experts from Grinding Solutions, Zeiss Microscopy, Hippo Geoscience, Mintek, Geological Survey of Finland and the Centre for Minerals Research. The workshop is free to attend and promises to be an excellent overview of the state of the art, along with driving towards the next generation requirements of the technology, particularly as it relates to addressing the currently existing challenges in industry and academia. Within the workshop itself James Strongman, Petrolab’s director, will be presenting on “Maximising the value of mineralogy, a staple rather than luxury in the Metallurgists’ diet”. The full Workshop Agenda can be found here, and is also reproduced below.     The conference presentation later in the week is the first output to come from the ATSE grant-funded work, in conjunction with the University of Tasmania into developing the use of automated mineralogy with kinetic tests. For this presentation...
2nd EDS Detector!

2nd EDS Detector!

Last week saw the visit of Bruker to fit our second EDS detector (the xFlash 6|60) and upgrade the analytical software. The additional detector allows Petrolab to acquire spectra simultaneously on two detectors reducing the time required to reach an acceptable level of counts for mineral identification. There are further added benefits in improving edge effect analysis and allowing more versatile analysis options on samples with topography. Finally, the software upgrade from Esprit 1.9 to 2.1 for the Bruker software brings added power and utility for element mapping and quantification. All-in-all the upgrades are an exciting development for Petrolab allowing us to increase sample throughput, analyse a wider range of sample morphologies and with greater analytical versatility on point & shoot job requirements.  ...
Petrolab welcomes Libby Rose

Petrolab welcomes Libby Rose

Petrolab are delighted to welcome Libby Rose. Libby has a First-Class Honours degree in Geology and was awarded a MSc with Distinction in Mining Geology at Camborne School of Mines in 2017. She went on to complete an internship at CSIRO on their CMR Discovery Internship Program in Perth, WA. Here she studied the hyperspectral infrared spectral data from multiple komatiite drill holes hosting nickel, and then carried out and compared Tornado x-ray fluorescence element mapping, scanning electron microscopy, and more detailed infrared microscopy....
Mineralogic 101 – Complex Outputs

Mineralogic 101 – Complex Outputs

In the previous Mineralogic 101 post, we covered the general outputs available in Mineralogic through the Reporter software. However, there are further outputs that can be generated from the raw database either through SQL modeling or Microsoft Excel. Taken together these outputs improve the visualisation of complex data, enabling the client to obtain useful information on the data relevant to their mineral processing, environmental mineralogy or tailings control. Grain Size Distribution Further detailed liberation analysis, in particular Theoretical grade-recovery curves Liberation yield bar charts Theoretical mineral-recovery curves Mineral association data These complex outputs are more important when the minerals textures are playing (or may play) an important role in limiting processing performance. Often (but not always), difficulties in processing boil down to liberation issues which is why there are several different tools available for visualising liberation characteristics within a sample.   Grain-size distribution (GSD) This analysis returns the GSD of target phases and the overall particles. Although not a direct measure of liberation it is a very useful tool for visualising distributions that may explain poor recoveries. Often, in tailings, the target phase is fine-grained...