Topotaxy

Japanese: トポタキシー(英語表記)topotaxy
Topotaxy
A coined word combining the prefix topo-, derived from the Greek word topos (place), with taxy, derived from taxis (arrangement, order). When a new phase is transformed or formed in a solid phase by the diffusion of temperature, pressure, atmospheric constituents, or a combination of these, the new and old phases have a crystallographic orientation relationship determined by their respective crystal structures. Examples of natural minerals that have been reported include pyrrhotite changing into marcasite and pyrite.

Source: Heibonsha World Encyclopedia, 2nd Edition Information

Japanese:
ギリシア語のtopos(場所)に由来する接頭語topo‐を,taxis(配列,順序)に由来するtaxyに組み合わせた造語。固相中で,もとの相の物質から温度,圧力,雰囲気構成物質等の拡散添加あるいはそれらの組合せによって新相が転換・形成されるときに,新旧両相それぞれの結晶構造から定まる結晶学的な方位関係を相互にもつ組織を示すこと。天然鉱物では磁硫鉄鉱が白鉄鉱と黄鉄鉱に変化した場合などの例が報告されている。

出典 株式会社平凡社世界大百科事典 第2版について 情報

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