Category：Mineral

Year：1822（found date）

Introduction：Meteorites are space materials falling onto the Earth’s surface. They are compositionally classified into three categories, including iron meteorite with metal content > 90%, stony iron meteorite with metal content > 50%, and stony meteorites that contain two subgroups; chondrites having ~10% metals and achondrites containing ~1% metals. While meteorites of these three categories can be readily distinguished by the proportions of metal luster areas, the iron meteorites resemble slags from steel-making processes and achondrites are similar to terrestrial basaltic rocks, imposing difficulties on meteorite identification.

This sample clearly shows two components with sub-equal proportions; the dark gray portion with metal luster and the yellowish silicate portion. It is therefore a stony iron meteorite. Upon cooling of meteorites, crystallization occurs resulting in fractionation. Stony iron meteorites are products at the interface of metal and silicate phases. This explains their scarcity.

No.:0009799002