Research on the production and circulation of bronze mirror in Japan and China.

采自矿山的朱砂样品678件朱砂样品来自日本地质调查局、国立先进工业科学技术研究所地质博物馆。这些矿石是从几乎所有使用朱砂的日本矿山中采集的。从废墟中收集朱砂收集的标本来自日本弥生时代晚期到高芬时代(公元100-400)的日本皇室古墓。测量了朱砂粉末的重量。王水被加入到标本中并将其溶解。用ICPS-1000III电感耦合等离子体原子吸收光谱仪(ICPS-1000III，日本京都岛津株式会社)测定了样品中的微量元素含量。为了观察朱砂在一只小鼠体内的含量是否相近，我们测量了朱砂矿石的含量，记录了同一矿山的采集点。通过对大和矿(奈良县)、牛矿(三叠县)、绥矿(德岛县)、出津矿(北海道县)四个主要矿山朱砂中微量元素含量的测定，比较了不同矿山间朱砂中微量元素含量的差异。废墟间朱砂中微量元素含量的比较在测定大和地区废墟中朱砂的含量时，使用的是大和矿或牛矿出土的朱砂。相反，据推测，德岛和歌山遗址使用的朱砂是从隋矿挖掘出来的。

Sampling and measurementCollection of cinnabar from minesThe cinnabar ore of 678 samples were gifted from Geological Museum of Geological Survey of Japan, National Institute of Advanced Industrial Science and Technology. Those ores were collected from almost of all Japanese mines in where a cinnabar was worked.Collection of cinnabar from ruinsThe ruins collecting the specimens were selected from old tomb of Royal family of Japan from the latter term of Yayoi era to Kofun era (A.D. 100 to 400).Measurement Powdered cinnabar was weighed. Aqua regia was added to the specimen and dissolved it. Contents of trace elements in the specimen were measured by Inductively Coupled Plasma Atomic Absorption Spectrometry (ICP-AES) (ICPS-1000III, Shimadzu Co., Kyoto, Japan).Results Comparison of the contents of trace elements in cinnabar ores collected in same mines. For observation whether the contents in cinnabar were similar levels in one mice or not, we measured the contents in cinnabar ores recorded the collecting place in same mines. As the results, similar levels of trace elements in cinnabar were observed in the ores collected in same mines.Comparison of the contents of trace elements in cinnabar ores between minesOres from four major mines, Yamato mine (Nara Prefecture), Niu mine (Mie Prefecture), Sui mine (Tokushima Prefecture), and Itomuka mine (Hokkaido Prefecture), excavated cinnabar were measured for comparing the contents of trace elements in cinnabar.As the results, there was difference the levels between the mines. It is thought that the difference depends on the components of ore.Comparison of the contents of trace elements in cinnabar between ruinsWhen the contents in cinnabar collected from the ruins in Yamato area were measured, the cinnabars excavated either Yamato or Niu mines were used in the ruins. On the contrary, it is speculated that the cinnabar used in Wakasugi-Yama ruin in Tokushima was excavated from Sui mine.