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The process by which rocks are broken down by the forces of nature.
Weathering
Main agent in chemical weathering.
Water
Branch of geology that deals with the identification of minerals.
Mineralogy
Largest group of minerals.
Silicates
Substances found naturally in the earth and have a crystalline structure.
Minerals
Gold, sulfur, carbon, and copper are all examples of what group of minerals?
Native Elements
Most commonly used type of coal.
Bituminous
Breaking and peeling away of rock in layers.
Exfoliation
T or F: chemical weathering is faster than physical weathering.
False
Hardest mineral.
Diamond
This kind of mining accounts for 60% of the world's total coal mining.
Underground Mining
Silicates compose over ___% of the earth's crust.
90%
Softest mineral.
Talc
A mineral's hardness is rated using the ___.
MOHs Scale
Geometric structures that are composed of atoms or molecules and have an orderly arrangement.
Crystal
Used as fuel for nuclear reactors.
Uranium
When scraping a mineral on a piece of unglazed porcelain, the mineral leaves behind a line of powder. What characteristic does this highlight.
Streak Color
How many native elements are recognized today?
50
Group that consists of compounds made with the elements flourine, chlorine, bromine, or iodine. Only a handful are common in the earth's crust.
Halides
The way light is reflected from the surface of a mineral.
Luster