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Petrographic information

What are some common challenges faced by petrographers when analyzing rock samples, and how can these be addressed on the job?

Petrographers often encounter challenges such as distinguishing between similar mineral phases, dealing with altered or weathered samples, and interpreting complex rock textures. These issues can be addressed by using advanced microscopy techniques, collaborating with geologists and laboratory technicians for cross-verification, and staying updated on the latest analytical methods. Regular team discussions and access to reference collections can also help ensure accurate, consistent results in petrographic analysis.

What are the key skills and qualifications needed to thrive as a Petrographer, and why are they important?

To thrive as a Petrographer, you need a solid background in geology, mineralogy, and petrology, typically supported by a relevant degree such as geology or earth sciences. Familiarity with polarized light microscopy, X-ray diffraction (XRD), scanning electron microscopy (SEM), and petrographic software is essential, and professional certifications in geology can be beneficial. Critical thinking, attention to detail, and effective written communication are important soft skills for analyzing samples and reporting findings accurately. These competencies ensure precise identification and interpretation of rock and mineral samples, which is vital for research, construction quality assurance, and resource evaluation.

What is a petrographer?

A petrographer is a geoscientist who specializes in studying and analyzing rocks, particularly their composition, structure, and origin. They use microscopes and various laboratory techniques to examine thin sections of rocks to identify minerals and textures. Petrographers play a vital role in fields such as geology, mining, oil and gas exploration, and construction by helping to determine the suitability of materials and understanding earth processes. Their work is essential for resource exploration, academic research, and quality control in material industries.

What is the difference between Petrographic vs Geologist?

AspectPetrographicGeologist
CredentialsTypically requires a degree in geology, earth sciences, or related fields; petrographic analysis often involves specialized training in microscopy and mineralogyRequires a degree in geology, earth sciences, or related fields; may include certifications in fieldwork and geological mapping
Work EnvironmentLaboratory-focused, working with thin sections and microscopes to analyze rocks and mineralsField and laboratory work, including site surveys, sampling, and data interpretation
Industry UsageCommonly employed in petrochemical, mining, and academic research sectorsUsed across mining, oil and gas, environmental consulting, and academia

Petrographic specialists focus on microscopic analysis of rocks and minerals to understand their composition and origin, primarily working in labs. Geologists have a broader scope, including fieldwork and geological mapping, often utilizing petrographic techniques as part of their work. Both roles require geology-related credentials but differ in their primary work environment and specific tasks.

More about Petrographic jobs
What cities are hiring for Petrographic jobs? Cities with the most Petrographic job openings:
What states have the most Petrographic jobs? States with the most job openings for Petrographic jobs include:
What job categories do people searching Petrographic jobs look for? The top searched job categories for Petrographic jobs are:
Infographic showing various Petrographic job openings in the United States as of May 2026, with employment types broken down into 100% Full Time. Highlights an 100% In-person job distribution.

Traveling Renewables Technician

American Engineering Testing Inc

Saint Paul, MN • On-site

$21 - $23/hr

Full-time

Medical, Dental, Vision, Life, Retirement, PTO

Posted 18 days ago


Job description

About Us

American Engineering Testing, Inc. (AET) specializes in geotechnical engineering, pavement engineering, environmental consulting, building technology consulting, construction materials design and testing, and petrographic/chemical analysis. Our extensive in-house resources and solid reputation attract quality-focused regional, national, and international clients from a wide range of industries.

At American Engineering Testing you’ll have the opportunity to work with the best and brightest in the industry. Everyday our employees apply their diverse skills, expertise, and knowledge to our mission of engineering and delivering creative solutions that improve our world. We’ll support you as a valued member of our team, whether you’re established in your career or just starting out, through training programs, hands-on experience, mentoring opportunities, and guidance from respected industry leaders. As a 100% employee-owned company, our employees share in the rewards of our growth and success.


AET is hiring a Traveling Renewable Energy Field Technician of projects typically lasting 3-9 months


Job Summary

The Renewables Technician plays a critical role in supporting renewable energy project operations by performing on-site inspection, testing, maintenance, and troubleshooting of wind, solar, and battery storage systems. This position is responsible for field-based soil and concrete testing for wind farm construction projects, ensuring compliance with industry standards, safety regulations, and project specifications. The ideal candidate will demonstrate strong technical aptitude, problem-solving skills, and a commitment to safety while contributing to the successful delivery of high-quality renewable energy projects in a fast-growing sector.


This role requires frequent travel, with projects typically lasting 3-9 months (depending on project scope) before transitioning to the next assignment. Tower climbing is not a component of this position. Housing and food expenses are covered via a generous per diem allowance.


Essential Duties and Responsibilities

Reasonable accommodations or workable solutions may be made to enable individuals with disabilities to perform essential functions.

  • Conduct field concrete testing, including slump, cylinder casting, de-molding, and compression tests.
  • Perform soil inspections and testing (excavation observations, proof rolling, nuclear density testing, Dynamic Cone Penetrometer testing, etc.).
  • Document and report test results to contractors, clients, and project managers.
  • Communicate with the Lead Wind Energy Technician and contractors to ensure timely test completion.
  • Assist with installation, troubleshooting, and repair of wind, solar, and battery energy storage systems.
  • Conduct routine maintenance and inspections of renewable energy systems.
  • Collect and analyze performance data to optimize system efficiency.
  • Follow industry regulations (OSHA, NEC, environmental standards) to maintain safety and compliance.
  • Operate specialized field equipment for testing and diagnostics.
  • Adhere to company policies and procedures while following strict safety protocols.
  • Work in various environmental conditions, including remote outdoor settings.

Qualifications and Education Requirements

  • High school diploma or equivalent.
  • Ability to obtain ACI Level 1 Certification
  • Ability to learn and reliably perform the required tests, reliably document data and report results to contractors, clients, and project managers.
  • Valid driver’s license and acceptable driving record required.
  • Ability to travel 95% of the work year required.
  • Ability to work outdoors in inclement weather conditions required.
  • Capable of the physical labor required, with personal protective equipment.


Preferred Skills

  • ACI Concrete Field-Testing level I certification
  • Concrete and soil testing experience preferred.


Pay Transparency

Base compensation is expected to be in the range of $21.00 and $23.00 per hour based on skill set and experience. AET offers a comprehensive benefits package, including health benefits, insurance, Employee Stock Ownership Plan (ESOP), long term savings, paid time off, and professional development opportunities. The selected candidate must be authorized to work for any employer in the U.S. without requiring visa sponsorship now or in the future.

At AET we support employees through training programs, hands-on experience, mentoring opportunities, and guidance from respected industry leaders.

  • 401(k) with 3% Match
  • Health, dental and vision insurance
  • Flexible Spending Account
  • Disability and life insurance
  • Paid time off
  • Parental leave
  • Professional development assistance
  • Weekly Pay


Work Environment

The physical demands described here are representative of those that must be met by an employee to successfully perform the essential functions of this job. This job primarily operates in a field environment in outdoor conditions on construction sites with uneven ground and adverse weather conditions. This role routinely uses standard office equipment such as computers, phones, and photocopiers.   


Physical Demands

The physical demands described here are representative of those that must be met by an employee to successfully perform the essential functions of this job. While performing the duties of this job, the employee is regularly required to talk or hear. The employee is frequently required to stand; walk; use hands or finger, handle or feel; and reach with hands and arms. The employee is occasionally required to sit; climb or balance, stoop, kneel, crouch or crawl. This position may work outside in various weather conditions. Specific vision abilities required by this job include close vision, distance vision, peripheral vision, depth perception and ability to adjust focus.

Ability to:
  • Occasionally lift 30-60 pounds from the floor to 2 feet.
  • Rarely lift 60-100 pounds from the floor to 2 feet.
  • Occasionally carry 30-60 pounds for 10-30 feet.
  • Rarely carry 60-100 pounds for 10-30 feet.


Other Duties  

Please note this job description is not designed to cover or contain a comprehensive listing of activities, duties, or responsibilities that are required of the employee for this job. Duties, responsibilities, and activities may change at any time with or without notice.


Third Party Disclosure

Notice to Third Party Agencies: AET does not accept unsolicited resumes from third party recruiting firms. Absent a signed Service Agreement by AET’s Chief People Officer (CPO), AET reserves the right to pursue and hire these candidates without financial obligation to recruiters or agencies.