Ann: Major Discovery 1km plus High Chargeability Target Found, page-46

Hey Lithiumbull the sulphide content in a rock mass can be estimated using chargeability (mV/V) values from induced polarization (IP) surveys. While the exact sulphide percentage depends on the mineralogy, grain size, and host rock properties, the following provides a rough guide for sulphide content based on chargeability readings:

20 mV/V → ~1–2% sulphides (Weakly mineralized, background levels in some environments)
30 mV/V → ~2–4% sulphides (Low to moderate sulphide content, often disseminated)
40 mV/V → ~4–6% sulphides (Moderate sulphide concentration, possible stringer or vein-hosted mineralization)
50 mV/V → ~6–8% sulphides (Significant sulphide content, could indicate semi-massive zones)
60 mV/V → ~8–12% sulphides (High sulphide concentration, possible massive sulphide zones)

Zinc (Sphalerite has very little to no charge at all). From old announcements there is little Iron sulphide in the system either so hopefully the Sulphide charge is copper/chalcopyrite's.

Just my thoughts so dyor

KL