-
- 大藤 弘明
- 愛媛大学地球深部ダイナミクス研究センター
書誌事項
- タイトル別名
-
- Self-organization process of framboidal pyrite investigated by microtextural analysis
- 日本鉱物科学会研究奨励賞第7回受賞者 受賞記念研究紹介 微細組織から探るフランボイダルパイライトの自己組織化プロセス
- ニホン コウブツ カガクカイ ケンキュウ ショウレイショウ ダイ7カイ ジュショウシャ ジュショウ キネン ケンキュウ ショウカイ ビサイ ソシキ カラ サグル フランボイダルパイライト ノ ジコ ソシキカ プロセス
この論文をさがす
抄録
The 3D packing structures of microcrystals in framboidal pyrite have been investigated by morphological observations and crystallographic orientation analyses using the EBSD technique to understand its self-organization process. The packing structures are basically classified into three types: (i) face-centered cubic (fcc), (ii) icosahedral and (iii) random packings. The orientation analyses on many ordered (fcc) framboids revealed that about a half of the microcrystals in a framboid involve high-angle (~ 90°) misorientation. This means that even in morphologically highly ordered framboids, the crystallographic orientations of microcrystals are not uniform, suggesting that the self-organization process of framboidal microcrystals is not crystallographically controlled. We propose a three-step model for the self-organization: (1) simultaneous nucleation of monodispersive pyrite microcrystals in a fixed volume (from precursor FeS), (2) aggregation of the randomly oriented microcrystals driven by surface forces and the reduction in total surface energy associated with both the individual microcrystals and the whole aggregate, resulting in the formation of the framboidal texture, and 3) reorientation of the microcrystals driven by further reduction in surface energy associated with the grain boundaries.<br>
収録刊行物
-
- 岩石鉱物科学
-
岩石鉱物科学 41 (1), 12-18, 2012
一般社団法人 日本鉱物科学会
- Tweet
キーワード
詳細情報 詳細情報について
-
- CRID
- 1390001206525595648
-
- NII論文ID
- 10030121962
-
- NII書誌ID
- AA1146088X
-
- BIBCODE
- 2012JMMPS..41...12O
-
- COI
- 1:CAS:528:DC%2BC38XmsFeksL4%3D
-
- ISSN
- 13497979
- 1345630X
-
- NDL書誌ID
- 023574864
-
- 本文言語コード
- ja
-
- データソース種別
-
- JaLC
- NDL
- Crossref
- CiNii Articles
-
- 抄録ライセンスフラグ
- 使用不可
