Gravity potential: High
Gold already liberated by nature and occurring in gravel, sand and sediments.
Typically starts with physical sizing and gravity potential.
YOUR ORE
EVERY ORE IS DIFFERENT.
How the gold occurs in the ore determines what has to happen next. NORSE begins with the material.
Core application
Gold that can be physically liberated from hard rock through controlled crushing and grinding.
Requires controlled liberation before recovery can be evaluated.
Test required
Gold occurring together with sulphide minerals. Recoverability depends on how the gold occurs and how effectively it can be liberated.
Requires testwork to understand liberation and recovery potential.
Specialist evaluation
Very fine gold locked inside mineral structures and not necessarily recoverable by physical separation alone.
Requires specialist evaluation before a process route is selected.
THE FIRST QUESTION
CAN THE GOLD BE PHYSICALLY LIBERATED?
Free gold
Where gold is sufficiently liberated, gravity separation may provide an effective recovery route.
Mixed liberation
Some gold may be free while some remains associated with other minerals. Testwork determines the route.
Locked gold
When gold remains locked in mineral structures, additional evaluation is required before selecting a next step.