Science. 1984 Jan 20;223(4633):281-3. doi: 10.1126/science.223.4633.281.
Two asteroids have clear indications of olivine-rich surface petrology without any indication of pyroxene or plagioclase, suggesting that the olivine may be quite pure. They provide probable examples of mantles of differentiated parent asteroids exposed by fragmentation and are good candidates for the parent bodies of the unusual olivine meteorite Brachina or the olivine-iron alloy meteorites called pallasites.
两颗小行星具有富含橄榄石的表面岩石学的明显特征，没有任何辉石或斜长石的迹象，表明橄榄石可能相当纯净。它们提供了分化母体小行星地幔暴露的可能实例，是异常橄榄石陨石 Brachina 或称为橄榄石铁合金陨石的母体候选体。
