Lead Resource Geologist

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About this role

Lead Resource Geologist Houston, TX, Houston, Texas, US, San Francisco HQ About Mariana Minerals Mariana Minerals is a software-first, vertically integrated minerals company on a mission to supply the critical minerals powering modern energy, AI, and defense technologies. We're reimagining the minerals supply chain by combining deep industry expertise with advanced software, automation, and data-driven decision-making. The Role Mariana Minerals is seeking a Lead Resource Geologist to support resource development, mine geology, and technical studies across open pit and underground mining projects. This role will contribute directly to geological interpretation, resource modeling, and grade control inputs that underpin mine planning, engineering, and economic evaluation. In this role, you will work closely with mine planning, mining engineering, and operations teams to ensure geological models are technically sound, practical, and aligned with mining realities. You will apply hands-on experience in nickel and copper systems to support resource growth, model refinement, and operational decision-making across multiple stages of project development. This role is ideal for a geologist with solid field, modeling, and operational experience who wants to demonstrate technical excellence and impact in a fast-moving, project-driven environment. What You'll Do Geological Modeling & Interpretation - Own geological and mineral resource model governance, including assumptions, documentation, uncertainty, and technical defensibility - Build, update, and maintain geological and resource models supporting open pit and underground mine designs and economic evaluation - Interpret lithology, structure, alteration, and mineralization using drilling, mapping, and sampling data - Define and apply domain-based modeling approaches and geostatistical methods appropriate for

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