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- Aggregate of
interlocking silicate minerals formed by
cooling and solidification of
magma.
Source: Leet, L. Don. 1982.
Physical Geology, 6th Edition. Englewood Cliffs, NJ: Prentice-Hall
- Rock formed by the solidification of molten material that originated
within the earth.
Source:
Dictionary of Mining, Mineral, and Related Terms
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