mineral resources final exam Flashcards
main mineral used in almost everythingq
sand and gravel
Other main minerals
sodium and iron, nitrogen and sulfer
economically variable rock with metal rich minerals
ore
Shallow ore body less expensive and less dangerous, need large areas for waste drop, rock broken up by explosives
open pit mining
usage of tunnels, drill shaft, made with dynamite, dangerous due to potential collapses
Underground mines
How does mining affect the environment?
Can create ugly scared landscapes, produces waste rock called tailings, gets put into a pile
what are acid mines drainage?
When acid mines deposit the acid into the environment and rivers, can effect the ecosystem and kills stream biota and mobilizes heavy metals
Ways mineral deposits are formed?
- ) Magnetic Activity
- ) Hydrothermal Process
- ) Sedimentary Deposits
- ) LEaching
- ) Hydraulic Sorting
How does acid drainage occur?
Slfide reacts with O2 to form sulfuric acid and this reacts with water forming AMD
what mineral resources are not renewable?
oil and coal, and all
What is mountain top removal? how does it affect the environment?
It is the removal of the summit of the mountain to access coal deposits; It affects the environment due to movement of sediment and rocks into nearby rivers and streams and destroying
What is Magnetic activity caused by?
Volcanoes caused the body of magma underneath surfaces to crystallize sulfur rich minerals
How does the hydrothermal process work?
Hot magma is heating up ground water which convects the water and moves through cold cracks and creates new minerals
where do black smokers occur?
along all mid ocean ridges
how do sedimentary deposits form?
Form under banded iron formations, required huge changes in oxygen in water and atmosphere
