Limestone is the rock that is most useful to modern industrial countries because it is the source for the main ingredient in cement.
why are rocks useful to man
Granite is a durable rock which has been useful in step construction.
sedimentary
determining the structure of sediments and basement rock
Granite
mineral content
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The rock would be considered an ore.
The rock would be considered an ore.
Some yes,some,no. There are uesful and not-so-useful in both sexes. It really depends on your definition of "useful".
Rock Phosphate contains P2O5 in insoluble form(insoluble in water of land so could not be useful) while Super phosphate fertilizers conatin P2O5 in soluble form(soluble in water under the earth and is useful and give fertility to land).So Superphosphate is more useful than Rock phosphate
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ore
maybe copper
slate and marble
flat rock buy the sea level.
Granite is one kind of hard rock.