Chapter 16 Mining

Evaporites form in areas with high ____________. 

• rainfall
• humidity
• volcanic activity
• rates of evaporation

What type of mineral is valued for its economic worth?

• gangue
• native
• ore
• compound

Which of the following is a compound?

• gold (Au)
• silver (Ag)
• quartz (SiO2)
• Uranium (U)

Which of the following is not a characteristic of all minerals?

• naturally occuring
• usually inorganic solid
• orderly internal structure
• contains DNA

What is the term for minerals that have little to no economic value?

• ore
• native
• compound
• gangue

What is the first step in coal mining?

• take core samples
• remove overburden
• cut the coal for easier removal
• refining coal

Acid mine drainage is cause by which element?

• carbon
• sulfur
• nitrogen
• boron

Which of these is a type of surface mining?

• room and pillar
• longwall
• solution
• quarrying

What is the layer of impurities that forms during smelting?

• slag
• flux
• dredge
• sludge

Collapse of _________ can lead to subsidence (sinkholes).

• placer deposits
• coal
• pillars in abandoned mines
• magma seams