Gemstones are commonly found in pegmatites, which are igneous rocks that are ________. a. exceptionally mafic b. exceptionally coarse grained c. exceptionally fine grained d. extrusive, forming from lava

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Gemstones are commonly found in pegmatites, which are igneous rocks that are ________. a. exceptionally mafic b. exceptionally coarse grained c. exceptionally fine grained d. ex…

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Gemstones are commonly found in pegmatites, which are igneous rocks that are extusive or forming from lava

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