摩斯尔效应和高压电子显微镜在B型样本中检测到素
Science (New York, N.Y.)
|January 30, 1970
概括
月球上的克林诺素显示铁,和的有序分布. 这种阴离子分布表明在低于680°C的温度下处于平衡状态,这对晶体结构有影响.
科学领域:
- 地质化学 地质化学
- 矿物物理 矿物物理
- 材料科学 材料科学 材料科学
背景情况:
- 月球clinopyroxenes是了解月球地质历史的关键矿物质.
- 烟素中的阴离子分布会影响它们的物理和化学特性.
- 之前的研究还没有完全解决月球clinopyroxenes的位置占用问题.
研究的目的:
- 为了确定月球clinopyroxenes中铁性铁,和的占用率.
- 为了研究离子排序及其与形成温度的关系.
- 为了分析月球clinopyroxene晶体的微观结构.
主要方法:
- 核马射线共振吸收光谱使用 (57) Fe.Fe.
- 高压电子显微镜 (200 kv).
- 电子衍射分析.电子衍射分析.
- 用钻石刀进行超微镜切割,用于样品制备.
主要成果:
- 在M1和M2地点对Fe,Mg和Ca的占用率估计.
- 证明了有序的阴离子分布:Ca更喜欢M2,Mg更喜欢M1.
- 推断的平衡温度低于680°C.
- 观察到一致的300-600 Å宽带,对应于单晶域.
结论:
- 月球clinopyroxenes中的阳离子分布是有序的,反映出低温平衡.
- 微观结构分析揭示了样品内不同的单晶域.
- 需要进一步的研究来将这些域与低温磁性排序相关联.
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