Geological Terms Beginning With "X"
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A crystal that has grown in a rock during the process of metamorphism
and which has not developed its characteristic crystal faces because of space limitations.
A preexisting rock that has been incorporated into magma
without melting. When the magma crystallizes the preexisting rock
fragment is known as a xenolith.
A plant that can survive in a very dry location or climate.
A technique used to identify minerals by bombarding them with X-rays. Planes of repetition within the atomic structure of the mineral diffract the X-rays. The pattern of diffraction is unique for each mineral structure and can be used for identification.
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|Minerals: Information about ore minerals, gem materials and rock-forming minerals.|