Process Mineralogy 2017

Process Mineralogy 2017

Petrolab are proud sponsors of Process Mineralogy 2017 in Cape Town next week and have the privilege of presenting two papers at the conference. The first presentation is on the optimization of automated mineralogy for operational mine-site applications. Automated mineralogy systems have been around for over 20 years now but this presentation looks at the next paradigm shift in the application of this technology into operational contexts. Effectively using automated mineralogy on mine-sites has had to overcome three substantial hurdles. This has been (i) the presence of a sufficiently ruggedized system for mine-site deployment; (ii) the turnaround times, dependent on slow sample preparation, slow data acquisition and slow data interpretation, and (iii) the complexity of the systems that have often required (expensive) off-site specialists for implementation and running. Our paper explores solutions to these challenges and presents different case studies that it could be applied to (including one case study where it is being applied). The full abstract is below.   Optimising Automated Mineralogy for Operational Mine Site Applications. Strongman, J*., Brough, C*., Fletcher, J*., Garside, R*., Prinsloo, A’. & Tordoff,...
Job Opportunity – Software Engineer

Job Opportunity – Software Engineer

We currently have a temporary position available for an experienced Software Engineer. MAIN PURPOSE The postholder will work to continue the development of version 2 of a reporting application for the Carl Zeiss Microscopy Mineralogic Mining system. This is a temporary post with an expected project duration of approximately 2 months (full-time), though possibly longer. PROJECT BACKGROUND A WPF/ C#/ SQLite reporting application to be used to summarise, view and compare large mineralogical data sets produced by automated mineralogy using a scanning electron microscope and the Zeiss Mineralogic system. Data comes from analysis of a mineralogical sample (or samples) and consists of data on particles, made up of one or more grains. Each grain / particle has shape (morphometric) and composition (elemental) data. The overall goal of the reporting application is to streamline the workflow for calculating and producing summary project output (in the form of custom tables, charts and images) from Mineralogic output data in a reproducible and efficient manner. For more information and to apply, please e-mail petrolab@petrolab.co.uk to request an application...
Petrolab welcomes Corinne Garner

Petrolab welcomes Corinne Garner

Thank you for the recent interest shown in the vacancy for Junior Mineralogist at Petrolab Limited. We appreciate all the received applications and welcome Corinne Garner to the team at Petrolab. She recently completed her Masters at Camborne School of Mines having previously undertaken a Bachelors degree at the University of Aberdeen. Her courses included ore mineralogy and petrology, analytical techniques for mineral analysis and sample preparation, ore deposit geology and mineral...
Job Opportunity – Junior Mineralogist

Job Opportunity – Junior Mineralogist

UPDATE (16/01/2017): Thank you for all the interest in this position. This vacancy has now been filled. We are hiring! We currently have a place available for a junior mineralogist working primarily in our sample preparation laboratory and with our routine mineralogical tests. 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 undertake routine mineralogical and petrographic tests under supervision, including recording and preparing samples for testing, and operate scientific instrumentation and software (e.g. scanning electron microscope, Mineralogic automated mineralogy system, optical microscopes) to analyse a broad range of materials. 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 use other sample analysis/preparation equipment based in the south-west region (Cornwall & Devon). Occasional visits to client sites and conferences will also be required. To apply,...
Mineralogic 101 – Image Processing

Mineralogic 101 – Image Processing

In the previous posts on using Mineralogic we focused on analysis modes and mineral lists. One of the final critical things to consider before acquiring data is how to process the field image. Mineralogic offers a dizzying array of potential functions that can be combined together to form an image processing recipe and applied to each field image (e.g. arithmetic, logical, morphological, segmentation and several more). The purpose of these image processing functions is to aid in the interpretation of necessary data from the fields whilst omitting unnecessary analysis areas. A good primary example would be a basic threshold. This is the simplest of image processing recipes and ensures that the analysis mode you have chosen and mineral list you have developed is applied only to the particles (rather than the resin). It would after all be wasteful and inefficient to spend hours analysing epoxy resin. This could be made more complicated if, for example, several threshold levels were used to split out the different phases (by BSE intensity). As can be seen below in order to split our 4 separate...
New Paper: Automated Environmental Mineralogy

New Paper: Automated Environmental Mineralogy

Following the recently attended Sustainable Minerals conference, and the feedback we received our paper on the use of automated mineralogy has now been published in Minerals Engineering. Corrected proofs of the paper can be viewed here, with more information behind the rationale for the research here. This work has been a three-way collaboration between SRK Consulting, Geochemic and ourselves. This paper represents the first exploration of our use of Zeiss Mineralogic with mine waste assessments with more planned in the coming months. Abstract The prediction of acid rock drainage and metal leaching (ARDML) from mine sites requires a detailed understanding of the site specific rates and mechanisms of weathering. This is typically obtained through geochemical and mineralogical characterisation testwork that is undertaken on representative materials. One of the key components of this characterisation work is kinetic testing which generates critical data on the rate at which minerals within waste materials weather in the presence of moisture and oxygen. One of the most commonly applied kinetic tests is the humidity cell test (HCT) in which granulated material is exposed to cyclical...