A pegmatite is an igneous rock showing a very coarse texture, with large interlocking crystals usually greater in size than 1 cm (0.4 in) and sometimes greater than 1 meter (3 ft). Most pegmatites are composed of quartz, feldspar, and mica, having a …

Pegmatite is the host rock for many rare mineral deposits. These minerals can be commercial sources of: beryllium , bismuth, boron, cesium, lithium, molybdenum, niobium, tantalum, tin, titanium, tungsten, and many other elements.

2019年4月12日 · Pegmatite is the host rock for numerous mineral deposits and can be the commercial sources of beryllium, bismuth, tin, titanium, tungsten, niobium, and many other elements. Large sheets of mica are often mined from pegmatite and used to make components electronic devices, circuit boards, optical filters, detector windows, and many other products.

Gemstone deposits: Some pegmatites host valuable gemstones like emeralds (Be₃Al₂(SiO₃)₆), aquamarines (Be₃Al₂Si₆O₁₈), and tourmalines (Na(Li,Mg,Fe,Mn,Ca)₃Al₆(BO₃)₃(Si₆O₁₈)(OH)₄).

2025年1月8日 · World-class Li-pegmatite deposits are found in the eastern Tibetan Plateau region 16, including the Jiajika, Ke’eryin, and Zhawulong deposits 17, 18, 19. Recently, new prospecting targets have...

伟晶岩稀有金属矿床成矿熔体/流体具有低黏度、富水、高分散性、富碱等性质，可导致P、F和B等元素在伟晶岩中的极端富集，使其与稀有金属组成各类络合物或化合物而迁移与富集。 富含Li-Cs-Ta (LCT)型伟晶岩与S型花岗岩关系紧密，成矿物质主要起源于黑色页岩等海相沉积物质，而富含Nb-Y-F (NYF)型伟晶岩常与A型花岗岩联系紧密，属同源岩浆演化和矿化。...

Elements such as tungsten, boron, tantalum, columbium, bismuth, tin, uranium, radium, sheet mica, and sulfide minerals of various metallic elements are among substances obtained from pegmatite deposits. Pegmatites have provided radioactive minerals for use in radiometric age dating of many rock complexes.

2017年12月1日 · Pegmatite bodies control the geomorphology, their composition the chemical weathering. Climate is accountable for the plain- and valley-type supergene deposits. Wet-and-dry and humid tropical climates are most favorable target areas. Targets are rare metal pegmatites, kaolin, gemstone-, Nb/Ta, Sn, REE placers.

2013年7月23日 · This article will review the generally accepted model of the pegmatite formation and shed light into the geology of Volyn pegmatite deposit, Ukraine – one of the greatest sources of gem minerals in Europe.

2023年2月1日 · The rare metal pegmatite deposit (enriched in Li, Rb, Cs, Be, Sn, Ta, and Nb) is a crucial rare metal deposit type (Černý et al., 2005). Accurate determining of the mineralizing age of the deposits is a crucial issue to restrict its metallogenetic geodynamical setting.