Ore Deposits

Question 1

heavier minerals crystalize early and settle at the bottom of the magmatic chamber

Answer 1

crystal setting (magmatic)

Question 2

rare earth elements can be concentrated

Answer 2

fractional crystallization (magmatic)

Question 3

crystallization of this mineral concentrate certain minerals and elements

Answer 3

magmatic

Question 4

valuable substances are concentrated by this mineral that flows through rock pores

Answer 4

hydrothermal

Question 5

may contain large amount of dissolve metals

Answer 5

hydrothermal

Question 6

well-defined zones of mineralization that occur in faults or fissures

Answer 6

vein-type deposits

Question 7

ore minerals are distributed in very low concentrations through large volumes of rock

Answer 7

disseminated deposits

Question 8

precipitation of metals as sulfide minerals

Answer 8

massive sulfide deposits

Question 9

concentration of valuable substances by chemical precipitation coming from lakes or seawater

Answer 9

sedimentary ore deposits

Question 10

dissolved substances precipitate as most of the water evaporates

Answer 10

sedimentary ore deposits

Question 11

formed through the concentration of valuable substances through gravity separation during the sedimentary process

Answer 11

placer

Question 12

specific gravity of substances determine the concentration of valuable substances

Answer 12

placer

Question 13

heavy minerals are mechanically concentrated by water currents

Answer 13

placer

Question 14

result from the accumulation of valuable material through chemical weathering processes

Answer 14

residual

Question 15

_____ reduces the volume of the original rock and extracts common elements, leaving behind _______

Answer 15

leaching - residual elements