Pieters C M
Science. 1982 Jan 1;215(4528):59-61. doi: 10.1126/science.215.4528.59.
Olivine is identified as the major mafic mineral in a central peak of Copernicus crater. Information on the mineral assemblages of such unsampled lunar surface material is provided by near infrared reflectance spectra (0.7 to 2.5 micrometers) obtained with Earth-based telescopes. The composition of the deep-seated material comprising the Copernicus central peak is unique among measured areas. Other lunar terra areas and the wall of Copernicus exhibit spectral characteristics of mineral assemblages comparable to the feldspathic breccias returned by the Apollo missions, with low-calcium orthopyroxene being the major mafic mineral.
橄榄石被确定为哥白尼环形山中央山峰中的主要镁铁质矿物。通过地基望远镜获得的近红外反射光谱（0.7至2.5微米）提供了有关此类未采样月球表面物质矿物组合的信息。构成哥白尼中央山峰的深部物质成分在已测量区域中是独一无二的。其他月球高地地区和哥白尼环形山的边缘呈现出与阿波罗任务带回的长石角砾岩相当的矿物组合光谱特征，其中低钙斜方辉石是主要的镁铁质矿物。
