CH 16 Study Guide
a law that regulates the release of hazardous substances into the air, soil, and water by mining operations
Comprehensive Response Compensation and Liability Act
a law that sets standards to minimize the surface effects coal mining on the environment
Surface Mining Control and Reclamation Act of 1977
contaminated water that results when acid dissolves toxic minerals remaining in mines and excess rocks
acid mine drainage
A quarry could also be called
an open pit
Evaporites most commonly form in
arid regions where rates of evaporation are high
Which of the following is not a characteristic of a mineral?
atoms in random patterns
funds posted before a mining project begins
bond
Surface mining can cause
both air and noise pollution
two or more atoms chemically bonded together
compound
What do hot, subsurface waters contain when they are identified as hydrothermal solutions?
dissolved minerals
a floating barge on which buckets fixed on a conveyor excavate sediments
dredge
large piles of excess rock from mines
dumps
What is one property that may be used to distinguish metallic from nonmetallic minerals?
electrical conductivity
The first step in finding an ore deposit is
exploring rock formations for mineralization
a layer of impurities that forms atop molten metal during smelting
flux
a material that bonds with impurities and separates them from molten metal during smelting
flux
nonmetallic minerals prized mainly for their beauty, rarity, or durability are called
gemstones
For mining to be profitable, the price of the final product must be
greater than the costs of extraction and refining
Which of the following would not likely be mined using solution mining?
gypsum
Placer deposits are surface deposits concentrated by
movement of wind and water
What can contaminate a river as a result of dredging?
muddy sediments
minerals that are economic to extract
ore minerals
rocks that cover coal seems near the surface
overburden
Subsidence can result from the collapse of
pillars in abandoned mines
a network of entries in coal mines
rooms
The layer of impurities on top of molten metal that forms during smelting
slag
Which of the following is a water contaminant that can cause acid mine drainage
sulfuric acid
Which of the following is not a regulation mining companies must follow?
the Hazardous Products Act
ore deposits formed in cracks in rocks
veins
About ___ percent of the world's salt comes from the solar evaporation process.
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