Maps of plagioclase, olivine, and pyroxene at 1 km resolution are derived from a combination of data from the Diviner Lunar Radiometer on the Lunar Reconnaissance Orbiter and the Kaguya Multiband Imager. The Diviner instrument features three infrared bands designed to characterize a spectral feature of lunar soils that is sensitive to the average silica polymerization of the surface called the Christiansen Feature, which is directly sensitive to the presence of plagioclase, the dominant lunar silicate. Existing global mineral maps based on near-IR data largely infer the presence of plagioclase from the bright mineral’s effect on total reflectance, excepting in rare locations where the surface is nearly pure plagioclase and a weak feature in the plagioclase near-IR spectrum can be relied upon. By integrating both wavelength regions we produced more robust estimates of the abundance of the three dominant minerals. In the process of this work, we also improved the removal of space weathering effects from Christiansen Feature maps, and showed that silica rich compositional anomalies could be reliably detected by decorrelating Christiansen Feature and FeO maps. New silica-rich locations are reported as are the global abundances of the three major silicates.

中文翻译：

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月球勘测轨道器 Diviner 月球辐射计实验的 Christiansen 特征图：改进的校正和衍生矿物学

分辨率为 1 公里的斜长石、橄榄石和辉石图来自月球勘测轨道飞行器上的 Diviner 月球辐射计和 Kaguya 多波段成像仪的数据组合。Diviner 仪器具有三个红外波段，旨在表征月球土壤的光谱特征，该光谱特征对表面的平均二氧化硅聚合敏感，称为 Christiansen 特征，该特征对斜长石（主要的月球硅酸盐）的存在直接敏感。基于近红外数据的现有全球矿物图在很大程度上从明亮矿物对全反射率的影响推断出斜长石的存在，除了在表面几乎是纯斜长石的稀有位置和斜长石近红外光谱中的弱特征可以依赖之上。通过整合两个波长区域，我们对三种主要矿物的丰度进行了更可靠的估计。在这项工作的过程中，我们还改进了从 Christiansen 特征图去除空间风化效应的效果，并表明可以通过对 Christiansen 特征图和 FeO 地图进行去相关来可靠地检测富含二氧化硅的成分异常。报告了新的富含二氧化硅的位置以及三种主要硅酸盐的全球丰度。