The major iron ore minerals are ________.
A. pyrite and chalcopyrite
B. galena and sphalerite
C. calcite and dolomite
D. hematite and magnetite
E. mica and quartz
Answer: D
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The difference between high water (high tide) and low water (low tide) is the ____
A) tidal bore B) tidal wave C) tidal range D) amphidromic point
Joints can provide rocks with some porosity and permeability
a. True b. False Indicate whether the statement is true or false
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