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The miarolitic cavities and miarolitic pegmatites are sources of rare and unusual minerals containing elements not found in abundance in normal igneous rocks. Minerals containing lithium, rubidium, beryllium, boron, niobium, tantalum, tin, bismuth, fluorine and other elements can be found.
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is gradually excluded from the forming crystal phases until it becomes trapped within the body and forms the cavities which often contain
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in reference to a variety of granite, rich in cavities, from Baveno in northern Italy.
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Formation of tourmaline-rich gem pockets in miarolitic pegmatites
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crystallizes from the outside walls toward the center. The
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69:of elements incompatible with the typical
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142:. You can help Knowledge (XXG) by
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49:. The central portions of
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111:London, David;
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189:Mineralogy
183:Categories
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95:References
82:miarolitic
51:pegmatites
194:Petrology
80:The term
71:silicate
67:minerals
59:volatile
43:granitic
89:miarolo
86:Italian
134:This
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