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毫县陨石是一种球粒陨石,它于1977年10月20日降落在安徽省毫县张沃吝子门大队。落地时陨石破裂成两块,相距2000米,大块(1号样)重约5.5公斤,小块(2号样)重约2.5公斤。文中3号样系该陨石的近表部、但不含熔壳的样品。两块陨石的主要化学成分相同。陨石球粒和基质的主要矿物成分基本相同,主要有斜方辉石、少量单斜辉石、橄榄石、尖晶石、钛铁矿、陨硫铁、铁纹石、镍纹石、自然铜等。根据化学成分和矿物成分分类,毫县陨石属于L或LL群。
Mill County meteorite is a chondrites, it landed in October 20, 1977 Zhang County, Anhui Province Zhang Wo mean son gate. When the meteorite landed on the ground into two pieces, apart from the 2000 meters, a large piece (No. 1) weighs about 5.5 kg, small pieces (No. 2) weighs about 2.5 kg. In the paper No. 3 Department of the meteorite near the surface, but does not contain the sample of the melt. The two main meteorites the same chemical composition. The main mineral composition of the meteorite pellets and matrix are basically the same, mainly orthopyroxene, a small amount of clinopyroxene, olivine, spinel, ilmenite, meteorite pyrites, iron stone, nickel stone, natural copper Wait. According to chemical composition and mineral composition classification, Mi County meteorite belongs to L or LL group.