Title:  Senior Geologist - Resource Estimation

Requisition ID:  123255

Phoenix, AZ, US, 85004-2121

Category:  Scientific Services

Freeport-McMoRan is a leading international mining company with headquarters in Phoenix, Arizona. We operate large, long-lived, geographically diverse assets with significant proven and probable reserves of copper, gold, and molybdenum. The company has a dynamic portfolio of operating, expansion and growth projects in the copper industry. Freeport-McMoRan is one of the world’s largest publicly traded copper producers, the world’s largest producer of molybdenum and a significant gold producer. We have a long and successful history of conducting our business in a safe, highly efficient and socially-responsible manner.

We have the assets, the talent, the drive and the financial strength to provide attractive and rewarding careers of our employees. We encourage you to take the time to explore the opportunity to advance your career at Freeport-McMoRan.


Responsible for the safe and efficient operation of the Geology department, including the direct coaching of personnel involved in the design and execution of resource estimation, resource modeling, development and mine geology programs. Provide technical analysis and feedback to operating units to enhance the efficient and optimal mining of resources.


  • Oversee the geological evaluation and resource modeling estimation studies for the mining, exploration of assigned projects 
  • Perform evaluation and analysis of the Model-Mine-Mill processes and reconciliation 
  • Assist with the generation of 10K Ore Reserve statements for review by the Senior Management team 
  • Communicate resource estimation information regularly to management level to keep them informed of progress, problems and proposed solutions
  • Train and develop staff in the procedures to ensure consistent and accurate geological models and resource estimates and reporting
  • Development of practical procedural manuals for geologic resource estimation so that procedures can be clearly understood by both technical people and clients
  • Perform other duties as required


Minimum Qualifications 

  • Bachelor’s degree in Geology or related Mining Engineering and five (5) years of Resource Estimation experience, OR
  • Master’s degree in Geology and three (3) years of Resource Estimation experience
  • Ability to meet in the future qualification as a “Competent Person” for the reporting of Mineral Resources
  • Knowledge of the principles and practices of geology and mining
  • Knowledge of the geology of porphyry and skarn hosted copper and gold systems
  • Fluent in English (written and verbal)
  • Skill in the practical application of resource estimation and geostatistics 
  • Skill in mineral resource modeling and 3-dimensional geologic problem solving
  • Advanced user in the operation of at least one of the major 3D Modeling software packages 
  • Must be willing and able to learn to use the Vulcan modeling software exclusively
  • Demonstrated ability in the production of technical reports
  • Good problem solving and judgment skills 
  • Ability to work to a deadline
  • Ability to communicate highly technical procedures and results to others, both inside and outside the immediate group


  • Six (6) to eight (8) years of overall experience in Geology, Exploration or Mining 
  • Experience working at underground and/or open pit mines 


  • Ability to understand and apply verbal and written work and safety-related instructions and procedures given in English 
  • Ability to communicate in English with respect to job assignments, job procedures, and applicable safety standards
  • Must be able to work in a potentially stressful environment
  • Generally office based sedentary work
  • Position is in busy, non-smoking office located in downtown Phoenix, AZ
  • Location requires mobility in an office environment; each floor is accessible by elevator and internal staircase
  • Occasionally work may be performed in a mine, outdoor or manufacturing plant setting
  • Must be able to frequently sit, stand and walk
  • Must be able to frequently lift and carry up to ten (10) pounds
  • Occasionally will be required to make visits to active mine and exploration sites, which may include exposure to extremes in temperature and humidity, moving mechanical parts, risk of electrical shock, toxic chemicals, explosives, fumes or airborne particl
  • May require the employee to demonstrate manual dexterity, climb stairs and ladders, work on elevated platforms, talk, hear and see
  • Personal protective equipment is required when performing work in a mine, outdoor, manufacturing or plant environment, including hard hat, hearing protection, safety glasses, safety footwear, and as needed, respirator, rubber steel-toe boots, protective clothing, gloves and any other protective equipment as required
  • Freeport-McMoRan promotes a drug/alcohol free work environment through the use of mandatory pre-employment drug testing and on-going random drug testing as per applicable State Laws

At Freeport, we are committed to providing an employment package that recognizes excellence, rewards value and impact, and encourages safe production. Benefits and compensation are foundational elements of this package, along with career development opportunities, job progression and a culture supported by our core values, among others. Learn more at: FCX Jobs - Working Here



We provide an industry-leading benefits package with some of the lowest cost to employees – offering health, wellness, life insurance, paid time off, retirement savings and more. These benefits are available to you and your dependents starting day one. Our comprehensive benefits program is important to how we support the health and wellness of employees and their families. For further benefits information please click here: Benefits Details



The estimated annual pay range for this role is currently $94,000-$132,000. This range reflects base salary only and does not include bonus payments, benefits or retirement contributions. Actual base pay is determined by experience, qualifications, skills and other job-related factors. This role is eligible for additional discretionary and incentive payment considerations based on company and individual performance. More details will be shared during the hiring process.  


Safety / Work Conditions:

Candidates will be required to participate in a post-offer, pre-employment medical examination for the following positions which may have essential job duties that can impact both their own safety and the safety of others:

  • Site-based positions, or positions which require unescorted access to site-based operational areas, which are held by employees who are required to receive MSHA, OSHA, DOT, HAZWOPER and/or Hazard Recognition Training; or 
  • Positions which are held by employees who operate equipment, machinery or motor vehicles in furtherance of performing the essential functions of their job duties, including operating motor vehicles while on Company business or travel (for this purpose “motor vehicles” includes Company owned or leased motor vehicles and personal motor vehicles used by employees in furtherance of Company business or while on Company travel).


Equal Opportunity Employer

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