copper mineral deposits

Question 1

Process begins

Answer 1

Early stages of earth’s formation of crust

Lead, zinc in crust

Question 2

copper weight in average house? and car?

Answer 2

200kg
20kg in average car
40kg in luxury car

Question 3

Porphyry copper deposits uses

Answer 3

electrical and heat conductivity, resistance to corrosion, toxicity to microbes

Question 4

Porphyry copper mineralisation

Answer 4

Very large, low grade deposits, associated with intermediate to acidic plutonic intrusives. Characterised by intense and extensive hydrothermal alteration of host rocks

Question 5

What is porphyry?

Answer 5

intermediate to acidic magmas intruded at shallow levels

Question 6

Models of formation

Answer 6

Alteration - veins/stockworks
Mineralisation 
Nature of the fluids - 
stable isotopes
fluid inclusions 
Volatiles/brecciation

Question 7

Porphyritic

Answer 7

abundant large phenocrysts with finer grained groundmass

Question 8

Located?

Answer 8

Around major divergent and convergent faultlines

Question 9

Key facts

Answer 9

spatially and genetically related to igneous intrusions - I-type granitoids