Geologist Open-Pit Production (Porphyry Copper)

ASARCO LLC; Kearny (AZ); On-site; USD 90,000 - 130,000; Full time

Job summary

ASARCO Ray Mine in Arizona is seeking a Mine Geologist - Open-Pit Production (Porphyry Copper) to support safe, efficient ore extraction and ore boundary definition at a world-class deposit. The geologist will provide precise interpretation, field validation, and informed ore routing for Mine-to-Mill optimization.

Reporting to the Chief Mine Geologist, the role requires collaboration with Drill & Blast, Short-Range Mine Planning, Operations, and Processing teams, ensuring data integrity and

Responsibilities

• Execute daily open-pit ore control, including rapid ore/waste boundary updates, blast hole logging, and active mining shovel support to minimize dilution.
• Conduct detailed pit mapping, geologic logging, and sampling focusing on lithology, structure, alteration, and mineralization for accurate material classification.
• Partner closely with Drill & Blast, Short-Range Mine Planning, Operations, and Processing teams to support Mine-to-Mill optimization.
• Collaborate with LSXEW and Metallurgy teams to optimize heap leach material selection, copper solubility, and acid consumption compatibility.
• Assist in updating 3D operational geology models in Leapfrog Geo under the direction of the Chief Geologist.
• Participate in grade reconciliation, QA/QC of sampling procedures, and data integrity reviews.
• Ensure all field and documentation practices comply with site HSE standards and technical reporting standards.

Tools

Leapfrog Geo

Job description

ASARCO Ray Mine is seeking an enthusiastic Mine Geologist - Open-Pit Production (Porphyry Copper) to be part of a dedicated team focused on supporting copper production at a world class copper deposit. The Ray Mine Geologist plays a critical role in supporting safe and efficient ore extraction by providing accurate geological interpretation, ore boundary definition, and field validation at an autonomous haulage, high-tonnage open-pit copper mine, which processes both sulfide and oxide ores. Reporting to the Chief Mine Geologist, this position ensures that ore control decisions are informed by field observations and geological data, and that ore routing supports both Mine-to-Mill optimization and LSXEW leach material performance. The Mine Geologist is instrumental in linking and integrating geology with operations, planning, and metallurgy to drive site-wide value generation.

Key Responsibilities:

• Execute daily open-pit ore control, including rapid ore/waste boundary updates, blast hole logging, and active mining shovel support to minimize dilution.
• Conduct detailed pit mapping, geologic logging, and sampling focusing on lithology, structure, alteration, and mineralization for accurate material classification.
• Partner closely with Drill & Blast, Short-Range Mine Planning, Operations, and Processing teams to support Mine-to-Mill optimization.
• Collaborate with LSXEW and Metallurgy teams to optimize heap leach material selection, copper solubility, and acid consumption compatibility.
• Assist in updating 3D operational geology models in Leapfrog Geo under the direction of the Chief Geologist.
• Participate in grade reconciliation, QA/QC of sampling procedures, and data integrity reviews.
• Ensure all field and documentation practices comply with site HSE standards and technical reporting standards.