幌満産カンラン石はんれい岩中のトウ輝石の離溶ラメラ [in Japanese] On the Exsolution Lamellae of Diopside in Olivine Gabbro from Horoman Area, Hokkaido [in Japanese]
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Diopside in olivine gabbro from Horoman area, Hokkaido, has exsolution lamellae arranged parallel to the (100) diallage partings. These (100) exsolution lamellae are composed of two different lattices, i. e., a monoclinic pyroxene with space group P21/c, and an orthorhombic pyroxene with space group Pbca. These two phases may presumably be grown sub-microscopically side by side. Estimating the chemical composition of these (100) lamellae by refractive indices and lattice constants, the monoclinic pyroxene with space group P21/c is a closer member to clinoenstatite in the compositional range from clinoenstatite to pigeonite.
- Earth Science (Chikyu Kagaku)
Earth Science (Chikyu Kagaku) 22(5), 219-223, 1968
The Association for the Geological Collaboration in Japan