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Economic geology / Igneous rocks / Gemstones / Nesosilicates / Zircon / Pegmatite / Uranium-lead dating / Monazite / Granite / Geology / Petrology / Igneous petrology


LEUCOCRATIC ROCKS U-Pb zircon and monazite analyses from granitic rocks indicate that crustal melting accompanied both metamorphic events. Folded leuocosome and pegmatites are typically 1.74 Ga, whereas leucocratic dikes
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Document Date: 2009-11-03 15:20:28


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Facility

235U Leucocratic dike / /

NaturalFeature

Ivanpah Mountains / /

Region

western North America / /

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