Category: Geology

A Three Letter Word that Sank a Thousand Mineral Projects

This post was written by Mike O’Brien, Geostatistician Seequent Expert Services (previously ARANZ Geo), based on his experiences working as a consultant on mineral projects

‘AND’ is a logic gate that sneaks up on mineral projects and destroys their value.

‘AND’ is a logical conjunction and, to grossly simplify, it implies the outcome of applying a series of factors in combination is only positive if each of the series of factors is positive. This logic gate controls a lot of things that we do. For example, (Exam passed by Jane) = (Jane goes to school) AND (Jane goes to exam venue) AND (Jane obtained pass mark). All three conditions have to happen for Jane to pass the exam.

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The Open Mining Format

By Nicole Doucette

Imagine this: You’re a geologist at a mining company, and you’ve just finished updating your company’s geological model with new drilling results. You now need to pass this model to the mining engineers, so they can redesign a section of the mine. The mining engineers use a different software program than you do though, as it’s an industry standard to use different specialized programs for each part of the mining lifecycle.

However, your software programs are proprietary and not interoperable – meaning they don’t easily share information. They each have a unique file format. Your company has created a custom script to convert from one software to another, so you spend hours running the script and checking the data. You’re wary to run any new software updates, as it could change the file structure and render your script useless. You also have to meticulously check the file to make sure it’s converted correctly – because once the file was corrupted and haul trucks were sent to the wrong location, which was both dangerous and costly.

Instead of being able to focus on your work, you’re losing time every day converting and re-importing files for different programs. Since mining is iterative, you pass files back and forth with other geologists and engineers often. Every time they send you their data, they have to follow this same time-consuming process as well.

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Distance functions as a resource / Confidence classification and drillhole planning tool

By Findlay Craig

The distance function tool in Leapfrog Geo allows you to calculate the distance from a given object or objects within a project, and derive distance buffers – solids whose walls are a set distance from the objects we are interested in.  Although conceptually simple, this tool can be applied to drillhole planning and resource classification to quickly and easily inform and justify our planning, and quantify current and potential reserves.

In the example below, we have an ore body which is partially drilled out; to the south it is poorly constrained and we need to plan an additional drillhole program to gather more information in this area.

Distance functions as a resource blog

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3D geological mapping: From 2D GIS maps to 3D modelling

By Antonio Celis

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Traditionally, geoscientists have translated their field data collection efforts into a digital version of a geological map, which is typically built using GIS software (e.g. ArcGIS). Consequently most companies will have large archives loaded with GIS information from their projects. With more companies now choosing to collect their field data using electronic devices it ultimately results in a large repository of GIS data.

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Client Paper: Rockmass classification – different ways of interpreting a 3D Leapfrog Geo model

We are grateful to Davi Newton Pinheiro da Costa Gomes, Geologist Engineer – Rock Mechanic at AngloGold Ashanti, for producing this paper. The paper is provided in the original Portuguese as well as English  , and aims to show how the rockmass classification of the mine known as Orebody V was performed, as well as different ways of interpreting a 3D geotechnical model.

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Leapfrog and the Integra Gold Rush Challenge

The 2015 Integra Gold Rush Challenge was a crowd-sourcing competition inviting participants to help uncover the next big gold discovery in Canada’s Val-d’Ors, Quebec. Crowdsourcing offers mining an alternative to traditional approaches as it harnesses the accumulated wisdom of a wide and diverse group of individuals.

Leapfrog was the official 3D modelling partner. With access to over six terabytes of digital mining and exploration data, it was a great opportunity to showcase our powerful FastRBF™ engine. Over 1,300 participants registered to use the free Leapfrog Gold Rush licences we provided, including all of the five finalists.

 
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Geotechnical data collection and presentation – It starts and ends with a vision

We’d like to share this article by Louie Human and Ben Jupp, Principal and Senior Consultants at SRK. The article gives some great advice on best practice approaches to Data Collection as the first step towards minimising uncertainty and input into the advanced technical assessment and design of a caving operation. The article goes on to stress the importance of using 3D visualisation tools such as Leapfrog in engineering, to make the understanding of the data in a spatial context possible.

The authors outline why combining robust data collection with software toolsets that visualise, interrogate and develop geotechnical models is so important and how these ultimately feed into the mine design and decision making process and impact on the safety and economics of recovery.

The article first featured in AusIMM Bulletin in August this year: http://bit.ly/2dPsZa9

 

 

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Leapfrog Aspect: Tips and tricks

By PJ Hollenbeck

The Leapfrog Aspect Android app has been available for more than a month on Google Play. Over 300 devices have installed the app, and use cases have ranged from general geology and mining visualization to civil tunneling projects and environmental studies.

The first update went out two weeks after release which added support for contour lines and planned drillholes, as well as a number of minor bugs.

 

File size limitations

Questions regarding File Size limitations have come up a lot, but unfortunately there’s not a great answer for a standard size limit.  Aspect has better success loading wireframes than drillholes and point data, so a file that’s 50MB but mostly wireframes is going to be more suitable for viewing in Aspect than a 20MB file consisting of 3000 drillholes.  High-resolution texture maps on surfaces (such as draped aerial photos on topography) will also slow down Aspect and may lead to crashes or other undesirable behavior. Likewise, if a scene is choppy or erratic on the desktop Viewer, it will probably have issues in Aspect. If there are errors in wireframes they may also cause issues in Aspect, so be sure to use clean data when exporting scenes!

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Leapfrog Central: What does it mean for your organisation?

By Peter Joynt

In 2003, ARANZ Geo released the first version of Leapfrog. Leapfrog’s implicit modelling engine brought about a paradigm shift in the way geologists generate 3D interpretations. Organisations that have embraced this new technology have realised significant benefits by building dynamic implicit models in less time.

Now, in 2016, we are releasing Leapfrog Central, a model management system that will bring about another paradigm shift, to continuous modelling.

What is continuous modelling? Continuous modelling supports incremental changes to models as data becomes available, and because the development of the model is visible to the wider organisation, decisions can be made based on the latest data and the most current understanding.

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