三重県伊勢市西部の御荷鉾緑色岩類分布域から含アルカリ角閃石石英片岩が発見された．含アルカリ角閃石石英片岩は薄い層状（最大層厚30cm）を示し，緑色岩と互層する．主要構成鉱物は角閃石，スティルプノメレーン，チタナイト，石英および曹長石である．アルカリ角閃石はマグネシオリーベック閃石からクロス閃石に分類される．比較的粗粒なアルカリ角閃石（幅80µm程度）は累帯構造を示し，コアからリムに向かってFe^3＋／（Fe^3＋＋Al^vi）が減少し（0.9→0.5），最外縁部にウインチ閃石が存在する．またウインチ閃石は，マイクロブーディン構造を示すアルカリ角閃石の断裂部分にも存在する．アルカリ角閃石およびウインチ閃石はそれぞれ，累進および後退変成作用時に形成されたと考えられる．

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Degradinite is not classified as an independent maceral, but it is considered to be a variety of the vitrinite group (Stach et al., 1982). Degradinite is finely dispersed and characterized by lower reflectivity, more colorful fluorescence, higher H/C atomic ratio, higher alkane content, higher calorific value, volatile matter content and maximum fluidity compared with other vitrinite macerals. It would be logical to classify degradinite as liptodetrinite in the exinite group of the vitrinite maceral group.

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A small-scale analytical technique for carbon and oxygen isotopic analyses of dolomite, siderite and magnesite was developed using a batch method. Carbonate samples were reacted with conc-phosphoric acid at 100°C in vacuo. Using this batch method, standard calcite and dolomite samples were examined to check the minimum size of samples required. CO₂ gas greater than 10µl can be precisely measured with the conventional certainty. For smaller samples, isotopic results are affected by some contaminations evolved during reaction at 100°C with phosphoric acid. Metamorphic calcite and dolomite collected from the Kasuga contact aureole, Gifu Pref. were examined using the small-scale analyses. Within a hand specimen size, a large oxygen isotopic heterogeneity up to 6‰ Was observed.

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