4.2 Earth Resources

Question 1

What are Earth resources?

Answer 1

Materials removed from the ground for their economic value

Question 2

What is the difference between a resource and a reserve?

Answer 2

Resource is the material extracted eg oil, coal, metals and water
Reserve is the amount of material you are able to extract from the ground

Question 3

Key terms for yield calculations- average grade

Check example calculations

Answer 3

Concentration of mineral in the ore body
I.e % or Grams
E.g per tonne 2% copper and 1.5 g/t gold

Question 4

Strike length

Answer 4

Length in which mineralisation is found in the ore body horizontally
Eg 500 metres horizontally

Question 5

Depth

Answer 5

The depth in which the mineralisation is found in the ore body vertically
Eg 200 metres vertically

Question 6

Width

Answer 6

The width in which the mineral is found in a drill hole

Eg100 metres of width

Question 7

Specific gravity

Answer 7

Density of the ore body

I.e the rock