Chapter 10 - Geologic Resources

Question 1

cumulate

Answer 1

layer of dense minerals forming a concentrated deposit on the floor of a magma chamber

Question 2

pegmatites

Answer 2

form in magmas containing dissolved water - minerals crystallize and expel water rich in elements

Question 3

placer deposits

Answer 3

sedimentary deposits found in stream channels that contain metallic ores

Question 4

grades of coal (low to high)

Answer 4

lignite > bituminous > anthracite