Question

what is primary gold

Answer 1

1). Primary gold
Formed 2.6 billion years ago from very hot (300-550oC) water dissolving low-level “background gold” out of a
large volume of rock & redeposits it in a number of small areas to form large tonnage, generally fine
grained, but low grade deposits, several kilometres below the then surface of the Earth in the Yilgarn Block
of W.A.
These deposits tend to form associated with vein quartz and sulphide minerals in particular rock types &
environments. Some specimen gold nuggets may form if this quartz vein gold physically erodes.
This is the gold that the big companies are exploring for & mining.
Primary gold deposits form deep underground but may produce “primary” gold nuggets on erosion.
PRIMARY GOLD DEPOSIT CHARACTERISTICS
• large tonnage (millions of tonnes)
• low grade (2-8 ppm) & fine grained gold (tens of microns)
• low purity gold (10-15% silver), jagged, sharp & spiky
Archaean (2.6 billion years old)

Answer 2

Heye friend,
Primary gold
Formed 2.6 billion years ago from very hot (300-550oC) water dissolving low-level “background gold” out of a
large volume of rock & redeposits it in a number of small areas to form large tonnage, generally fine
grained, but low grade deposits, several kilometres below the then surface of the Earth in the Yilgarn Block
of W.A.
These deposits tend to form associated with vein quartz and sulphide minerals in particular rock types &
environments. Some specimen gold nuggets may form if this quartz vein gold physically erodes.
This is the gold that the big companies are exploring for & mining.
Primary gold deposits form deep underground but may produce “primary” gold nuggets on erosion.
PRIMARY GOLD DEPOSIT CHARACTERISTICS
• large tonnage (millions of tonnes)
• low grade (2-8 ppm) & fine grained gold (tens of microns)
• low purity gold (10-15% silver), jagged, sharp & spiky
Archaean (2.6 billion years old)
• formed from hot (300-550oC) water
• mineralized fractures associated with:
• faults
• quartz veins
• alteration zones
• sulphurous & carbonated waters
Hope it helps u
Thanks