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Identification of Silicate and Carbonaceous Presolar Grains in the type 3 Enstatite Chondrites

机译:硅酸盐和含碳含碳颗粒颗粒在3型脑牙酸盐中

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We surveyed presolar grains in primitive enstatite chondrites by isotopography using the HokuDai isotope microscope system. The mineral identification has been conducted by X-ray analysis with scanning electron microscopy. The chemical compositions are determined for eight silicate and ten carbonaceous presolar grains. Presolar grains of pyroxene compositions are dominant in the enstatite chondrites This suggests that presolar silicates of enstatite composition were selectively survived in the enstatite chondrite parent body or the enstatite chondrite formation area in the solar nebula.
机译:我们通过使用Hokudai同位素显微镜系统对原始Enstatite Chondrites中的预寄生颗粒进行调查。通过扫描电子显微镜通过X射线分析进行了矿物质鉴定。测定化学组合物八个硅酸盐和10个碳质预晶粒。辉石丁烯组合物的预寄生晶粒在山牙石组合物中占优势,这表明将山牙石组合物的预寄生硅酸盐硅酸盐在山牙石软石母体或太阳星云中的山牙石棺形成区域中选择性地存活。

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