Texture and growth process of low-crystallinity minerals from low-temperature solution

2015 Fiscal Year Final Research Report

• Project/Area Number: 25400506
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Petrology/Mineralogy/Economic geology
• Research Institution: Tohoku University
• Principal Investigator: Nagase Toshiro 東北大学, 学術資源研究公開センター, 准教授 (10237521)
• Co-Investigator(Kenkyū-buntansha): KURIBAYASHI Takahiro 東北大学, 理学研究科, 准教授 (20302086)
• Co-Investigator(Renkei-kenkyūsha): MIYAMOATO Tsuyoshi 東北大学, 東北アジア研究センター, 助教 (90292309)
• Project Period (FY): 2013-04-01 – 2016-03-31
• Keywords: アモルファス・結晶中間体 / 透過型電子顕微鏡 / 走査型電子顕微鏡 / 結晶成長 / 核形成 / 鉱物組織 / 準安定相

Outline of Final Research Achievements

We researched about precipitation processes of low-crystallinity minerals, which have crystal structure with numerous defects, from low temperature solution on the basis of observations for their textures and occurrence. The low-crystallinity mineral, which precipitates under metastable condition or out of stable region, are major in mineral species on the earth, and contribute to the diversity of minerals. It is considered that origins of the metastable phase were effects of impurity and interface energy. We will propose a new model for nucleation process of low-crystallinity minerals.

Free Research Field

鉱物学