Geopolitics 2

Question 1

Al average crustal abundance and concentration factor?

Answer 1

8%, 3-4x to make it viable

Question 2

Porphyry copper

Answer 2

formed on volcanic arcs

Question 3

Uses of copper

Answer 3

Power generation, building and construction (200kg Cu/house)

Transport (1.5km wiring/20kg)

Question 4

Copper useful metal

Answer 4

Cu + Zn = brass
Cu + Sn = bronze
High elec/heat conduct.
corrosion resistant
toxicity e.g. e col/stainless steel

Question 5

Porphyry copper

Answer 5

Abundant large phenocrysts
Finer grains - looks like granite
Itermediate to acidic magmas, shallow intrusions
Destructive boundaries e.g Chile