Gem Systems

🧲 Magnetic Myth: “Magnetics is only for mineral exploration.”

Magnetic surveys are widely used to map geology and support mineral exploration — but that is only one application.

A newly established geomagnetic observatory at Pituffik, Greenland, is helping expand magnetic-field observations in the high Arctic, where coverage has historically been limited.

Observatory data supports research into Earth’s magnetic environment, space weather, navigation, and long-term geomagnetic change.

From a ground survey grid to a remote Arctic observatory, magnetometry is ultimately about measuring and understanding the same dynamic Earth system.

https://gi.copernicus.org/articles/15/1/2026/

Pituffik (PIF), a new magnetic observatory in the Arctic Abstract. Pituffik is a newly established geomagnetic observatory located in the high Arctic – a region with sparse geomagnetic observational coverage. Positioned within the polar cap at Quasi-Dipole geomagnetic coordinates 83.19° latitude and 25.25° longitude, the observatory provides valuable ...

Our base stations at work — around the world.

From remote exploration programs to UAV surveys and long-term monitoring sites, base stations provide the reference data behind reliable magnetic measurements.

Earth’s magnetic field changes throughout the day. By recording those variations continuously at a fixed location, a base station enables survey teams to correct rover and airborne data for diurnal variation.

The result is cleaner data, stronger line-to-line consistency, and more confidence in the anomalies that guide interpretation.

These field photos show GEM Systems base stations deployed across a range of environments and applications — each one helping turn raw magnetic measurements into dependable geophysical data.

Two datasets. One UAV flight.

The integrates high-sensitivity and -EM acquisition into a single lightweight platform.

By collecting magnetic and electromagnetic data simultaneously, MagVLF helps survey teams build a more complete picture of subsurface while reducing field time and operational complexity.

Designed for , geological mapping, and environmental surveys, the system supports high-resolution interpretation in remote and difficult-to-access terrain.



https://www.gemsys.ca/magvlf/

🧭 UAV magnetics guiding drill targeting at Martello Gold

Richmond Hill Resources recently completed a magnetic survey at the Martello Gold Project in Ontario ahead of upcoming drilling.

The programme used the system, integrating high-resolution airborne magnetics with GEM Systems base station support to refine geological interpretation and improve drill target definition.

The survey extends earlier geophysical coverage and helps sharpen structural understanding across the project area as it moves toward its next exploration phase.

UAV-based magnetics continue to play a key role in modern mineral exploration, providing efficient, high-resolution data to support decision-making before drilling begins.

Read the report at the link below:https://www.voxmarkets.com/articles/richmond-hill-updates-on-airborne-mag-survey-at-martello-gold-project-as-drilling-nears-06888c1

Richmond Hill updates on airborne MAG survey at Martello gold project, as drilling nears Richmond Hill has been steadily advancing its portfolio of Canadian assets over the past year

We want to wish you all a Happy Canada Day from everyone here at GEM Systems!

🧲 Magnetic Myth: “Magnetic surveys directly measure depth”

Reality:
Magnetic surveys do not measure depth directly — they measure variations in the Earth’s magnetic field caused by subsurface sources.

https://www.gemsys.ca/about-high-quality-data/

🧲 Magnetic Myth: “Magnetic surveys directly measure depth”

Reality:
Magnetic surveys do not measure depth directly — they measure variations in the Earth’s field caused by subsurface sources.

Depth is always an interpretation, not a direct measurement, and depends on:

- Source geometry (d**e, pipe, body, fault zone)
- Magnetic susceptibility and remanence
- Survey altitude and sampling density
- Inversion or modelling approach used

Two sources with identical magnetic signatures can appear very different depending on shape and orientation, which is why estimates require modeling, constraints, and context rather than raw magnetic intensity alone.

In exploration workflows, magnetic data is most powerful when used to:

- Delineate structures
- Define targets
- Constrain geological models

Depth comes from interpretation — not the sensor itself.

https://www.gemsys.ca/about-high-quality-data/

Recent mineral exploration work in Southern Nigeria demonstrates how high-resolution ground surveying continues to play a key role in delineating ore-bearing and lithologically complex zones.

A field study conducted in the Okpella region used our GSM-19 to acquire ground magnetic data for mapping subsurface variations associated with ore and marble deposits.

The survey enabled researchers to:

- Identify and map magnetic anomalies linked to mineralized zones
- Delineate structural trends controlling ore and marble distribution
- Integrate aeromagnetic and ground datasets for improved interpretation

Ground-based profiling remains a critical tool in early-stage , particularly in structurally complex basement terrains where direct exposure is limited.

By delivering high-resolution, low-noise total field measurements, systems such as the GSM-19 support exploration teams in refining targets before drilling decisions are made.

(PDF) Ground Magnetic Profiling for Delineating Ore & Marble Deposits Within Okpella, Southern Nigeria PDF | Ground magnetic profiling was deployed to delineate the occurrences of ore and marble minerals within the study area, Okpella, Edo state, Southern... | Find, read and cite all the research you need on ResearchGate

One of the best parts of what we do is seeing GEM Systems equipment at work in the field.

We've been sharing some of the sent in by our customers, and we always enjoy seeing the different projects, environments, and applications where our instruments are making a difference.

Have a photo from the field featuring GEM equipment? We'd love to see it.

Send us your and we may feature them on our page.

www.gemsys.ca

GEM Systems' DRONEmag™ was developed specifically for UAV magnetic surveys, combining ultra-lightweight design with high sensitivity to support detailed magnetic mapping from the air. The system can be integrated with UAV platforms for applications ranging from mineral exploration and geological mapping to environmental and engineering investigations.

Check out this video to see how the DRONEmag™ operates and why UAV-based magnetics have become an important tool for acquiring high-resolution magnetic data efficiently and safely in challenging terrain.

The Future of Magnetometer Exploration: DRONEmag GEM Systems DRONEmag™: Ultra Light-Weight Potassium MagnetometerDe...