marble
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Marble. Credit: Mineral Information
Institute |
A metamorphic rock, composed chiefly
of calcium carbonate (CaCO3). Marble is formed by the metamorphism
of limestone and is often irregularly
colored by impurities. It is used for architectural and ornamental purposes.
The finest Italian marble is pure white calcite
and has been prized by sculptors throughout history. Related
category
GEOLOGY
AND PLANETARY SCIENCE
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