ypically anthracite coal is found in metamorphosed rocks while lignite is found in sedimentary rocks. How might mining anthracite differ from mining lignite? Question Select one: a. Sedimentary rocks are harder and therefore it could be more difficult to mine anthracite coal. b. Metamorphic rocks are harder and therefore it could be more difficult to mine anthracite coal. c. There would be no difference. d. Metamorphic rocks are more likely to have higher concentrations of water in them and therefore are more difficult to mine.

Applications and Investigations in Earth Science (9th Edition)
9th Edition
ISBN:9780134746241
Author:Edward J. Tarbuck, Frederick K. Lutgens, Dennis G. Tasa
Publisher:Edward J. Tarbuck, Frederick K. Lutgens, Dennis G. Tasa
Chapter1: The Study Of Minerals
Section: Chapter Questions
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Typically anthracite coal is found in metamorphosed rocks while lignite is found in sedimentary rocks. How might mining anthracite differ from mining lignite?

Question Select one:

a.
Sedimentary rocks are harder and therefore it could be more difficult to mine anthracite coal.
b.
Metamorphic rocks are harder and therefore it could be more difficult to mine anthracite coal.
c.
There would be no difference.
d.
Metamorphic rocks are more likely to have higher concentrations of water in them and therefore are more difficult to mine.
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