湖北十堰是世界著名优质绿松石产地, 所产松石颜色鲜艳、 质地细腻。 距十堰绿松石矿区直线距离300 km的河南偃师二里头遗址于2002年以来出土了大量绿松石器。 有学者推测二者存在供与用玉的关系, 即存在古老的“绿松石之路”。 然而, 为了考证该推测, 并试图给出二里头松石的矿源地, 本次研究以十堰地区三个矿区(秦古、 文峰和云盖寺)的三组样品、 及一组二里头出土样品为研究对象, 通过对获得的红外光谱特征进行比对与分析。 谱学特征显示, 秦古、 文峰和云盖寺样品红外光谱于1 200～950和700～400 cm-1峰位存在细微的, 但可以识别的差异。 在1 174 cm-1处, 文峰样品中出现吸收峰, 而秦古和云盖寺样品均没有出现。 在700～400 cm-1范围内, 文峰样品出现5个吸收峰, 而秦古和云盖寺样品出现7个相似的吸收峰。 二里头样品的红外光谱特征在以上峰位上与文峰绿松石差异较大, 而与秦古、 云盖寺松石的谱学特征相似。 在1 159 cm-1附近, 其吸收峰特征与云盖寺样品更加吻合。 利用公式A=lg(1/T), 将透射光谱值转换为吸光度光谱值, 计算出二峰值相对吸收强度比值(R=A783 cm-1/A837 cm-1)。 文峰、 秦古、 云盖寺及二里头绿松石的比值范围依次为0.819～0.920, 0.870～1.010, 0.806～0.860和0.827～0.878。 显然, 二里头与云盖寺样品重合率最高。 综上, 我们认为所测二里头绿松石来自于云盖寺的可能性最大, 并认为用红外光谱示踪出土文物来源有一定的参考或诊断意义。

Shiyan district in Hubei province is a famous locality of high-quality turquoise with brightcolor, finegrain in the world. Erlitou archaeologicalsite, which is about 300km north to the Shiyan Turquoise mine, has been excavated a remarkable number of turquoise artifacts since 2002. Some researchers infer that there was “a road of turquoise” between the two sites in history. In order to check the inference, and identify local features of the turquoises found in Shiyan, and Eelitou site as well, spectra of three turquoise groups from Shiyan, Hubei and one group of Erlitou unearthed samples were obtained by means of IR.Theirspectrahavevisible differences in the 1 200～950 and 700～400 cm-1 range. Peak 1 174 cm-1 appears only in samples from Wenfeng, and from 700 to 400 cm-1, 5 peaks show in samples from Wenfeng while 7 peaks emerge from the other two sites. Turquoises in Erlitou site have similar spectra to those from Qingu and Yungaisi, and are more similar to Yungaisi of peak around 1 159 cm-1. According to A=lg(1/T), intensity of transmittance spectra were calculated and then Ratios(A783 cm-1/A837 cm-1) were yielded. The ratios of samplesfrom Qingu, Wenfeng, Yungaisi and Erlitou site are 0.819～0.920, 0.870～1.010, 0.806～0.860 and 0.827～0.878 respectively, allowing for a suggestion that turquoise in Erlitou site was the most probable from Yungaisi. This research can be used as example for identifying origin of the unearthed turquoise relics, which is more likely a good tool for archeological research.