Go Time VTEM

Having doubled down in the current SPP I thought some more info on VTEM may be useful. The reliability of VTEM conductors being mineralised —especially when lower-grade mineralisation is present — depends on severalfactors. I note we are flying circa 1000 line km - this flying time could take 7-10 days weather dependant. Its a big moment for a small company - if we get some quality conductor targets things will start to heat up. Here's a bit on VTEM for those interested and it clearly shows LMS systematic approach to to tick the boxes and firm up those targets

1. Type of Mineralisation

• Sulfide minerals (e.g., chalcopyrite, pyrrhotite) are conductive, so VTEM is reliable for detecting these.
• Oxide or silicate-hosted mineralisation (e.g., some nickel laterites or low-grade disseminated gold) may not produce a strong EM response.
• Disseminated mineralisation may have weak or no detectable response if it's too low in volume or poorly connected.

2. Conductivity vs Grade

• VTEM detects conductivity, not grade.
  • A low-grade but well-connected sulfide body may produce a strong conductor.
  • A high-grade but poorly connected or disseminated sulfide system may be missed or appear weak.
• Low-grade mineralisation often correlates with less sulfide volume, reducing conductivity — lowering VTEM's reliability as a predictor.

3. Depth and Host Rocks

• Conductors at greater depth may have a weaker signal.

4. VTEM System Parameters

• Pulse width, receiver bandwidth, and survey altitude affect detection capability.
• VTEM is sensitive to moderate to highly conductive bodies, so subtle, low-grade zones can be masked.

5. Adjuncts that improve reliability:

• Reliability improves when VTEM data is combined with:
  • Geology
  • Surface geochemistry
  • Ground EM or IP survey
    
  
  

PotentialScenarios:

	Scenario	VTEM Reliability	Notes
1	Massive sulfides, even low-grade	High	Strong conductor, even if grade is low.
2	Disseminated sulfides, low-grade	Low–Moderate	Weak EM response; may be undetected.
3	Graphitic or clay-rich rocks present	Low	May yield false conductors.
4	No sulfides, oxide/gangue minerals dominate	Very Low	VTEM unlikely to detect.

GeneralVTEM Detection Depths

	Target Type	Estimated Maximum Depth
1	High-conductivity bodies (e.g., massive sulfides)	300–500 m, sometimes deeper
2	Moderate conductors	200–300 m
3	Weak conductors (e.g., disseminated sulfides, low-grade targets)	<150 m

So VTEM is reliable for detecting conductive bodies, but notinherently reliable for indicating mineralisation or grade, especially in low-gradesystems. Its reliability increases if:

• The mineralisation is massive sulfide or well-connected.
• Integrated with geochemical, geological, and other geophysical data.

Good luck to us all!!