Ep 122: Mining the Margins - What makes nickel laterites so complex

In this episode, Julian Aldridge (Managing Consultant, EMEAA) joins Laurie Hassell (Senior Consultant, UK) to discuss the complexities of nickel laterite deposits - from geology to geometallurgy and the processing challenges posed by magnesium and free silica. With more than 20 years' experience in resource geology, Julian brings practical insight into how geological variability affects processing decisions, cost, and mine planning. Key Points & Timestamps: 00:34 – What is a nickel laterite deposit? 01:03 – The role of mafic and ultramafic rocks 01:30 – Laterite vs saprolite horizons 02:10 – Why geometallurgy is critical for processing 03:07 – The impact of magnesium and free silica 04:38 – HPAL vs pyrometallurgical processing routes 05:35 – How free silica dilutes grade and increases OPEX 06:30 – The importance of early-stage planning and blending Have a question or want to get in touch? Contact us: [email protected] Explore more: https://snowdenoptiro.com/ 👍 Like, comment, and subscribe for more technical mining insights from our global consulting team. You can find our Fresh Thinking by Snowden Optiro podcasts on YouTube, Spotify, Apple Podcasts and most other podcast platforms. Who we are: Snowden Optiro is a resources consulting and advisory group that provides independent advice, consulting and training to mining and exploration companies, their advisors and investors. We help mine developers to advance their projects, mining companies to improve their operations and their professionals, and investors to de-risk their investments by the provision of quality advice, training and software in the field of Mineral Resources and Mineral/Ore Reserves. For training or consulting enquiries: training(at)snowdenoptiro.com  contact(at)snowdenoptiro.com  #NickelLaterite #Geometallurgy #MiningPodcast #SnowdenOptiro #FreshThinking