<紀要論文>
Chrome-diopsides in the Horoman and Higashi-Akaishi Peridotites, Japan

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概要 Green clino-pyroxene in the Horoman peridotite, Hokkaido, has been identified as chrome-diopside by optical, chemical, X-ray and infra-red absorption studies. For comparison, additional measurement wa...s made on vein chromediopside in the dunite from Higashi-Akaishi, Shikoku. Cell dimensions for the Horoman chrome-diopside are a=9.720Å, b=8.891Å, c=5.252Å, β=73°51′, cell volume=435.9Å^3 and for the Higashi-Akaishi chrome-diopside are a=9.734Å, b=8.915Å, c=5.274Å, β=74°04′, cell volume=440.1Å^3. High alumina content and small cell volume of the Horoman chrome-diopside are worthy of notice in that there is a possibility of the presence of a small amount of OH ions substituting for O ions in the structure of chrome-diopside.続きを見る

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登録日 2015.10.05
更新日 2021.02.18

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