薛家岗遗址出土古玉器的材质特征

The Texture Features of the Ancient Jades Excavated from Xuejiagang Site

摘要: 通过肉眼和显微镜观察，采用比重法、硬度法、X射线衍射法、红外光谱法、激光拉曼光谱法等无损仪器检测法对122件薛家岗出土玉器进行了玉种鉴定，探讨了玉器的物理性质和结构特征，并提出了出土古玉器的保护问题。分析结果表明，肉眼鉴别风化严重的古玉器，误判几率较大；彻底排除玉器内空气的影响，比重法分析可准确判定严重受沁古玉器的物相组成；古玉器内部与表层在颜色、致密度等存在差异，但主要物相组成相同。

Abstract: Through observing with naked eyes and microscope, measuring with some analytical techniques such as gravimetry, hardness test, X-ray diffraction analysis, Fourier transform-infrared spectrometry and laser Raman spectrometry, 122 pieces of ancient jade sam