Silicates and nickel-iron alloys are present at 50% each.

Broadly divided into two categories: olivine iron meteorite (olivine + metal) and medium stony iron meteorite (olivine + paleocopper pyroxene + metal), but a variety of stony iron meteorite of **** the same point is very little, so it is difficult to categorize into categories.

Also known as meteoritic ironstone, it is a relatively rare class of meteorites, accounting for 2% to 4% of the meteorite population. Iron-nickel and silicate minerals content is comparable (30% to 65%). The main minerals are olivine, a variety of pyroxene, iron-striated and nickel-striated.

Most stony-iron meteorites have a density of about 5.5 to 6 g/cm^3. In metallic iron-nickel alloys, the nickel content is mostly 12 to 14 percent, so the Widmann structure occurs.

Based on the mineral composition will be divided into four categories of olivine stony iron meteorite, paleocopper pyroxene lepidolite quartz stony iron meteorite, paleocopper pyroxene olivine stony iron meteorite and pyroxene plagioclase stony iron meteorite.

According to the different chemical composition, meteorites can be divided into three categories, a class of stone meteorites, the main component of silicate; a class of iron meteorites, the main component of iron-nickel metal; the other class of stony-iron meteorites, the composition of which is between the first two. In all the meteorites, stone meteorites are the most, accounting for about 92%, stone iron meteorites are more rare, accounting for only 2% of all meteorites.