Two people stand on a sand dune under a cloudy sky
Our story
Our story

About us

About us

Three decades of expertise.
A new chapter.

Three decades of expertise.
A new chapter.

Western Geolabs has operated as a heavy mineral separation laboratory for more than 36 years. Under renewed geologist-led ownership, the foundations are being modernised while retaining the hands-on expertise that defines specialist laboratory work.

Western Geolabs has operated as a heavy mineral separation laboratory for more than 36 years. Under renewed geologist-led ownership, the foundations are being modernised while retaining the hands-on expertise that defines specialist laboratory work.

Change of ownership
Change of ownership

36 years of service with a fresh approach.

36 years of service with a fresh approach.

Since the September 2025 change of ownership, the laboratory has invested heavily in modernisation — see Our Capabilities for the detail.

Since the September 2025 change of ownership, the laboratory has invested heavily in modernisation — see Our Capabilities for the detail.

The laboratory is led by a geologist with a research background in heavy mineral systems and extensive experience in mineral sands exploration. That geological understanding feeds directly into how samples are analysed, alongside the technical laboratory work the team carries out. For more complex separation work, such as centrifuge optimisation, a research-driven approach is applied.

The laboratory is led by a geologist with a research background in heavy mineral systems and extensive experience in mineral sands exploration. That geological understanding feeds directly into how samples are analysed, alongside the technical laboratory work the team carries out. For more complex separation work, such as centrifuge optimisation, a research-driven approach is applied.

This position at the intersection of commercial laboratory practice and scientific rigour is deliberate. The questions that matter to an explorer, a resource geologist, and a researcher are different — but the quality of the separation data underpins all of them.

This position at the intersection of commercial laboratory practice and scientific rigour is deliberate. The questions that matter to an explorer, a resource geologist, and a researcher are different — but the quality of the separation data underpins all of them.

"Finding new mineral deposits is becoming increasingly harder. The tools and methods we rely on today won't be enough for the next decades. We took on this laboratory because we want to be part of the solution — and we're genuinely excited about what better separation capability and new analytical methods could do for explorers, resource geologists, miners, and researchers." Gisela Gartmair, Owner, Western Geolabs

"Finding new mineral deposits is becoming increasingly harder. The tools and methods we rely on today won't be enough for the next decades. We took on this laboratory because we want to be part of the solution — and we're genuinely excited about what better separation capability and new analytical methods could do for explorers, resource geologists, miners, and researchers." Gisela Gartmair, Owner, Western Geolabs

Western Geolabs welcomes university geoscience and chemistry students through work placement and summer programs.

Western Geolabs welcomes university geoscience and chemistry students through work placement and summer programs.

Years of legacy

36+

Built on more than three decades of heavy mineral laboratory operation in Western Australia, continued under new ownership with a modernised approach.

Years of legacy

36+

Built on more than three decades of heavy mineral laboratory operation in Western Australia, continued under new ownership with a modernised approach.

Years of continuity

14+

Senior laboratory expertise retained through the change of ownership, with more than 14 years' continuous service at Western Geolabs.

Years of continuity

14+

Senior laboratory expertise retained through the change of ownership, with more than 14 years' continuous service at Western Geolabs.

Results reviewed

100%

All results are reviewed against acceptance criteria before release, with laboratory QA/QC insertion rates tailored to each client's requirements.

Separation workflows

3

Funnel, large centrifuge, and small centrifuge workflows, covering coarse separation through to fine-fraction analysis.

Separation workflows

3

Funnel, large centrifuge, and small centrifuge workflows, covering coarse separation through to fine-fraction analysis.

a person holding sand in their hands
What drives us
What drives us

Our values.

Our values.

Western Geolabs is built on precision, transparency, partnership, and continuous improvement — delivering reliable results, clear communication, and a commitment to constantly advancing capability.

Western Geolabs is built on precision, transparency, partnership, and continuous improvement — delivering reliable results, clear communication, and a commitment to constantly advancing capability.

01

Precision

Every sample is controlled, monitored, and documented from receipt through to final separation, with consistent methods applied at every stage to protect result integrity.

01

Precision

Every sample is controlled, monitored, and documented from receipt through to final separation, with consistent methods applied at every stage to protect result integrity.

02

Transparency

Capability, development status, and the improvement journey are reported plainly. No claims that can't be backed up — and no surprises after samples arrive.

02

Transparency

Capability, development status, and the improvement journey are reported plainly. No claims that can't be backed up — and no surprises after samples arrive.

03

Partnership

Every program starts with the client's goals. Where a requirement sits beyond current capability, real effort goes into finding a way — through new equipment, new methods, or a rethought approach.

04

Improvement

Continuous improvement is built into how the laboratory works — regular internal testwork, a willingness to try new approaches, and ongoing investment in capability, systems and facility.

04

Improvement

Continuous improvement is built into how the laboratory works — regular internal testwork, a willingness to try new approaches, and ongoing investment in capability, systems and facility.

a person holding sand in their hands
What drives us

Our values.

Western Geolabs is built on precision, transparency, partnership, and continuous improvement — delivering reliable results, clear communication, and a commitment to constantly advancing capability.

01

Precision

Every sample is controlled, monitored, and documented from receipt through to final separation, with consistent methods applied at every stage to protect result integrity.

02

Transparency

Capability, development status, and the improvement journey are reported plainly. No claims that can't be backed up — and no surprises after samples arrive.

03

Partnership

Every program starts with the client's goals. Where a requirement sits beyond current capability, real effort goes into finding a way — through new equipment, new methods, or a rethought approach.

04

Improvement

Continuous improvement is built into how the laboratory works — regular internal testwork, a willingness to try new approaches, and ongoing investment in capability, systems and facility.

Our team
Our team

Meet the team

Meet the team

Western Geolabs is built around a team with hands-on geological and laboratory experience, combining technical rigour with practical project understanding to support clients at every stage of the workflow.

Western Geolabs is built around a team with hands-on geological and laboratory experience, combining technical rigour with practical project understanding to support clients at every stage of the workflow.

Gisela Gartmair

Owner & Managing Director

Gisela, our Owner and Managing Director at Western Geolabs, plays an active role in the lab's development. Gisela holds a Master of Research in Geology, with published research on heavy mineral provenance using TIMA and LA-ICPMS. Her background spans mineral sands, rare earths, and regolith exploration across Australia, with training in Resource Geology and QA/QC. Hands-on with clients and workflows, Gisela focuses on practical, fit-for-purpose services that meet today's needs while growing the lab's capabilities.

Stuart Briggs

Co-Owner (Silent Partner)

Stuart, our co-owner of Western Geolabs, serves as a silent partner in the business. He holds a double degree in Mechanical Engineering and Commerce from the University of Western Australia, and an MBA from the University of New South Wales, with over 14 years' oil and gas industry experience. Stuart is not involved in day-to-day lab operations, focusing his professional time elsewhere. His role is ownership and background support, not hands-on involvement in daily work.

Rachel Hewett-Jones

Senior Laboratory Technician

Rachel, our Senior Lab Technician and team lead, is one of the most experienced members of the Western Geolabs team. With 25 years' experience in mineral sands laboratories, Rachel holds a Certificate IV in Applied Science – Laboratory Techniques and has been with Western Geolabs for over 14 years. As team lead, she oversees lab processes, drives quality assurance and control, and trains new team members, building the skills and consistency behind the lab's day-to-day operations.

Koshali Dissanayake Arachchige

Chemist

Koshali (Kisha) is our Chemist and Laboratory Supervisor, and the team's technical lead across heavy liquid separation at Western Geolabs. Kisha holds a Bachelor of Science (Honours) in Chemistry, with hands-on industrial lab experience in quality control, analytical testing, sample preparation, and production support within structured quality management systems. Kisha leads both funnel and centrifuge processes, focusing on fine fraction heavy liquid separation, optimisation, test work, and new process development, a key contributor to the lab's ongoing modernisation.

Trang Dang

Laboratory Technician

Trang (Jade), our Lab Technician, contributes across the wider laboratory workflow at Western Geolabs and is taking on more responsibility as she grows into a team leader role. Jade holds a Bachelor in Environmental and Analytical Chemistry, giving her a strong foundation in laboratory protocols, data management, and compliance. She brings well-rounded capability across funnel heavy liquid separation and the lab's wider workflow, while also playing a key supporting role in centrifuge separation alongside Kisha.

Daina Short

Laboratory Technician

Daina, our Laboratory Technician, brings a diverse laboratory background to the wider Western Geolabs team. Daina holds a Bachelor of Science and is working toward further study in data science, reflecting her strong interest in data-driven work and continual learning. She brings experience in agricultural soil and water analysis, as well as heavy machine oil analysis. At Western Geolabs, Daina supports the team across general laboratory operations, sample processing, and funnel heavy liquid separation.

Torquil Briggs

Laboratory Assistant

Torq, our Laboratory Assistant, brings over 40 years of mining engineering experience to Western Geolabs. Torq is a mining engineer with experience across Britain, South Africa, Botswana and Western Australia, and holds an MSc in Mining Engineering from Camborne School of Mines, spanning mineral sands, iron ore, underground gold mining and tailings reclamation. At Western Geolabs, Torq supports laboratory operations, equipment oversight and site health and safety, bringing decades of practical, hands-on experience.

William Hewett

Laboratory Assistant

Will, our Laboratory Assistant, has built a strong foundation in laboratory work since joining Western Geolabs earlier this year. Will joined the team at the start of his career to build practical skills in a hands-on environment, taking on greater responsibility and developing a strong eye for detail in sample handling. At Western Geolabs, Will supports daily laboratory operations, including key sample handling stages, and plays an active role in onboarding new starters.

Birendra Kunwar

Laboratory Assistant

Biren, our Laboratory Assistant, brings a background in environmental health research to the Western Geolabs team. Biren's career began as an Air Pollution Technician in Nepal, monitoring indoor air quality using specialised equipment. Since moving to Australia, he has built a reputation for attention to detail, safety-conscious practice, and careful record-keeping across a range of industries. At Western Geolabs, Biren applies this foundation and attention to detail across laboratory operations and sample processing.

Jhon Bermudez Contento

Laboratory Assistant

Jhon, our Laboratory Assistant, brings a hands-on approach and a diverse work background to the wider Western Geolabs team. Previously engaged in media research, Jhon is working toward an Advanced Diploma of Civil Construction Design, building his CAD and technical drawing skills. At Western Geolabs, Jhon is developing his skills across sample preparation and laboratory processes, while also putting his diverse skill set to good use in supporting our ongoing modernisation approach.

Jessica Chapin

Laboratory Assistant

Jess, our Laboratory Assistant, is completing her studies while working at Western Geolabs. Jess is undertaking a Geology Honours degree at Curtin University, building on her Bachelor of Applied Geology. Her project examines sediment grain size and shape in a marine estuary. She brings experience as a student intern in petroleum systems, reservoir modelling, and well-log analysis. At Western Geolabs, Jess supports the team's sample preparation while studying, bringing an analytical background and curiosity for industry.

Samantha Goswell

Laboratory Assistant Intern

Samantha, our Laboratory Assistant, joins the Western Geolabs team periodically during her university breaks. Samantha is in her third year of studying Applied Geology at Curtin University and brings a strong sense of curiosity, enthusiasm, and initiative to the lab, with a genuine interest in the minerals industry. During her time with us, Samantha continues to build her technical skills and industry knowledge. We look forward to welcoming her back during her university break.

Apply today

Join our team

We’re always interested in hearing from skilled and motivated people who are passionate about laboratory work, geology, and technical problem solving. If you’d like to be part of the Western Geolabs team, send through your CV.

Apply today

Join our team

We’re always interested in hearing from skilled and motivated people who are passionate about laboratory work, geology, and technical problem solving. If you’d like to be part of the Western Geolabs team, send through your CV.