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清镇陨石以具有高度还原的矿物组合为特征。普通球粒陨石和碳质球粒陨石中的亲石元素在顽火辉石球粒陨石内显示亲铜或亲铁的性质。在该陨石中发现的矿物有陨硫钙石。硫镁矿、钾的硫化物——硫铜钾矿,含Si的铁纹石及Ni的硅化物——硅磷镍矿等。顽火辉石和斜顽火辉石具有低的FeO含量,其FeO/(FeO+MgO)比值范围为0.004—0.01。在未完全熔融的球粒中发现具尘粒状贫Ni金届包裹体的残余橄榄石颗粒。本文首次报道陨石中含Ga的闪锌矿和发现陨石中稀少的碱硅镁柱石。金属-硫化物组合显示再加热和熔融的结构特征,金属发生硫化作用并被硫化物所取代。清镇陨石(EH_3)的化学成分与EH_(4,5)球粒陨石很相似,其La/Sm比值比平均EL高,Co/Ni则比EL低。清镇陨石的形成部位比任何其他球粒陨石群更靠近太阳,可能形成于水星-金星区。
Qingzhen meteorites are characterized by highly reduced mineral assemblages. The lithophile elements in common chondrites and carbonaceous chondrites show copper- or iron-binding properties in enstatite chondrules. The minerals found in this meteorite are melatonite. Magnesite, potassium sulphide - copper pyrophyllite, Si-containing ferrite and Ni silicide - silico-phosphorus nickel ore. The hematite and the oblique enstatite have a low FeO content with a FeO / (FeO + MgO) ratio in the range of 0.004-0.01. The residual olivine particles with dusty, granular, Ni-depleted inclusions were found in partially melted spherulites. This paper reports for the first time the sphalerite containing Ga in meteorites and the discovery of sparse basaltic magnesites in meteorites. The metal-sulfide combination shows structural features of reheating and melting, and the metal undergoes sulfidation and is replaced by sulfide. The chemical composition of Qingzhen meteorite (EH_3) is very similar to that of EH_ (4,5) chondrites. The La / Sm ratio is higher than the average EL and the Co / Ni is lower than the EL. Qing town meteorite formation than any other chondrites closer to the sun, may form in Mercury - Venus.