Show:
mines
minerals
Environmental Impacts
water
miscellaneous
100
These use some of the largest machines on Earth.
What is strip mining?
100
Gold, Silver and Copper
What are native elements?
100
Large piles of excess rocks from mines.
What are dumps?
100
An environmental impact of mining where water resources are negatively impacted.
What is Water contamination?
100
The process of returning land to its original or better condition after mining is completed.
What is reclamation?
200
A horizontal work of entries called rooms are cut into a seam and between the rooms, pillars of coal are left standing to support the roof.
What is room and pillar mining?
200
A mineral that is valuable and economical to extract.
What is an ore mineral?
200
Sinking of regions of ground with little or no horizontal movement.
What is subsidence
200
Hot, subsurface waters that contain dissolved minerals.
What is hydrothermal solution?
200
Nonmetallic minerals that are prized for their beauty, rarity or durability.
What are gemstones?
300
extracting rocks or minerals from the Earth by and open-pit or borrow.
What is open pit mining?
300
The shine of a metallic mineral.
What is metallic luster.
300
An environmental impact of mining where wind blows across unreclaimed soil and overburden.
What is air pollution?
300
The salts that are left behind when seas or lakes evaporate that have dissolved salt deposits in them.
What are evaporites?
300
Sand, Gravel, Crushed Rock
What are aggregates?
400
The act of extracting minerals from under Earth's surface.
What is subsurface mining?
400
Minerals with no commercial value.
What are gangue minerals?
400
When acidified soil is returned to the mine site, it may be difficult to grow plants.
What is infertile topsoil?
400
The outflow of acidic water from metal or coal mines.
What is acid mine drainage?
400
When crushed ore is melted at high temperatures in furnaces to separate impurities from molten material.
What is smelting
500
Mining in which soil and rock overlying the mineral deposit is removed.
What is surface mining?
500
Minerals concentrated by wind and water into surface deposits.
What are placer deposits?
500

This is caused when metals such as arsenic, cobalt and lead contained in excavated rock, are exposed to oxygen or water, thereby polluting water and soil.

What is heavy metal pollution?

500
When hot water is injected into the ore and dissolves it, then air is pumped into the dissolved ore, and air bubbles lift it to the surface.
What is solution mining?
500

Minerals are not... List 3 things

organic, liquid, other answers