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川西乡城地区的玻镁安山岩基质中辉石微晶具有奇特的枝晶形貌。通过高倍率光学显微镜和扫描电镜观察，较详细地分析了辉石枝晶的形貌细节。辉石枝晶一般发育三级分枝，各分枝间以近于90°和110°交角沿单斜辉石结晶学主轴方位优先生长，各级分校具有整体一致的光学性质，如同单个晶体。玻镁安山岩浆流动性大，呈薄层状。快速冷凝作用和强的结晶能力是辉石枝晶发育的前提条件。初步探讨了在远离平衡态结晶时，辉石枝晶生长方式和界面稳定性对晶体形貌的控制作用。
The pyroxene crystallites in the vitrinite andesite matrix in the Xiangcheng area of western Sichuan have strange dendrite morphology. By high-magnification optical microscopy and scanning electron microscopy, detailed analysis of the morphology of pyroxene dendrites. Phyllite dendrites generally develop three branches, with branches preferentially growing along the crystallographic axis of the clinopyroxene at angles of approaching 90 ° and 110 °. Branches at all levels have uniform optical properties as a single crystal. Magnesia Anshan magma fluidity, was thin layer. Rapid condensation and strong crystallization ability are the prerequisites for the development of pyroxene dendrite. The control effect of the growth mode and interfacial stability of pyroxene dendrite on the morphology of the crystal was also discussed preliminarily.