Abstract: In the structure of valleriite, iron ions may occupy twosites: tetrahedral site in sulfide layer and octahedral site in hydroxide layer. Based on the mossbauer data at room temperature, it is suggested that the high-spin Fe²⁺ presents in tetrahedral site with isomer shift of 0.42-0.48 mm·s^-1 and quadrupole splitting of 0.81-1.28 mm·s^-1; while the low-spin Fe³⁺ in octahedral site with isomer shift of 0.32-0.36 mm·s^-1 and quadrupole splitting of 0.44-0.59 mm·s^-1.

Key words: valleriite, mossbauer spectrum, coordination

摘要： 在墨铜矿的结构中，Fe离子可占据硫化物层中四面体和氢氧化物层的八面体两种配位位置。穆斯堡尔谱结果表明：高自旋的Fe²⁺占据四次配位位置，同质异能位移为0.42～0.48mm·s^-1;四极分裂为0.81～1.28mm·s^-1；低自旋的Fe³⁺占据六次配位位置，同质异能位移为0.32～0.36 mm·s^-1、四极分裂为0.44～0.59 mm·s^-1。

关键词: 墨铜矿, 穆斯堡尔谱, 配位