Texture of lutecite

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概要

• 論文の詳細を見る

• Lutecite is an aggregate of microcrystalline silica; its variety with a hexagon form is known as hexalite. Textures of lutecite and hexalite from the Arz-Bord Range, in northwestern Gobi, Mongolia, and from Banyan-obo, China, were observed by optical microscopy, synchrotron X-ray diffraction, and transmission electron microscopy (TEM). Cross sections of lutecite and hexalite observed through optical microscopy show fibrous textures. TEM observations revealed that the quartz crystals constituting each fiber exhibit irregular shapes elongated parallel to [212], which is nearly perpendicular to (101); a width of 0.5 μm; and length of a few micrometers. The results of selected area electron diffraction analyses show that the fiber bundles have V-shaped cross textures, and the crystals are twinned according to the Reichenstein-Grieserntal law. X-ray diffraction analysis indicates a total moganite content of approximately 10 wt% in this lutecite aggregate, and moganite appears as irregular-shaped domains within quartz under high-resolution TEM.

• 日本鉱物科学会の論文
• 2013-04-01

著者

• Nagase Toshiro

  The Tohoku University Museum

• Kuribayashi Takahiro

  Department Of Earth Science Graduate School Of Science Tohoku University

• TANAKA Masahiko

  Synchrotron X-ray Station at SPring-8, National Institute for Materials Science

• MOMMA Koichi

  Department of Geology, National Museum of Nature and Science

関連論文

• Application of FIB system to ultra-high-pressure Earth science
• Tanohataite, LiMn_2Si_3O_8(OH) : a new mineral from the Tanohata mine, Iwate Prefecture, Japan
• Texture of lutecite
• Texture of lutecite

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