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| − | ==Server Error 404- Page Not Found== | + | [[Rock]] surrounding an [[igneous rock|igneous]] [[intrusion]] or below a [[lava]] flow. |
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| | + | Pellant, p. 250 |
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| | + | =Sources= |
| | + | *Pellant, Chris. ''The Complete Book of Rocks and Minerals'', Dorling Kindersley Inc.: New York (1995) |
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| | + | [[category:geology]] |