Homework 8
Mining and Mineral Resources
Name _____________________ Note: the Final contains topics from the Midterm
including xrd and calcs applied to minerals
Use this to review Lecture 10
Lecture 10 Mining and Mineral Resources
A. Match the terms
1. Ore
a. worthless part of ore
2. Mineral resources
b. horizontal mine entrance
3. Mineral reserves
c. goods supplied without differentiation
4. Commodity
d. vertical excavation from the surface
5. Gangue
e. concentration of valuable element in ore
6. Grade
f. a conveyance used for moving workers
7.
Adit
g. are potentially valuable
8.
Drift
h. bars remove oversized boulders
9.
Shaft
i. valuable and feasible to extract
10. Stoping
j. the opening of underground rooms
11. Skip
k. left over after removing valuable fraction
12. Grizzly
l. near-horizontal passageway in a mine
13. Mine cage
m. contains minerals with important elements
14. Tailings
n. used to hoist ore to the surface
B. Essays.
15.List the first five steps, in order, in obtaining mineral based
commodities.
16.Select one Plate Tectonic setting and explain how valuable
minerals are formed there.
17.Explain how weathering modifies sulfides exposed at the surface.
18.A deposit contains 200 grams of Silver per metric ton of ore.
Calculate the grade.
19.Discuss reasons for choosing surface versus underground mining.
20. List the usual steps in Beneficiation, and explain how flotation
works. Also define tailings.
21. Explain the Smelting of Iron
22. Give an example of an environmental problem caused by
mining, beneficiation, or smelting, and give a solution in current
use.