Stone artefacts and cultural properties provided informations to interpret life and cultural exchange of ancestors. Therefore we have carried out geological study about the material characteristics of stone artefacts. In this study, jade ornaments excavated from Oksan-ri site, Sancheong was examined on petrographic study and micro-XRF analysis to give fundamental data for provenance presumptions. Also Stupa of the Buddhist Monk Soyo at Baegyangsa temple, Jangseong was studied about petrological characteristics and attempted to figure out its provenance through geological field survey of Jangseong area.
The jade ornaments of Oksan-ri site, Sancheong were green color and one of the constituent minerals in granitic pegmatite. There were characterized as two parts of microtextures in thin section. One was combinations of albite and pericline twining in microcline. The other was exsolution texture which was an intergrowth of K-rich and Na-rich feldspar. Their compositions were sanidine(Ab3-22Or78-92) and anorthocalse(Ab83Or17) respectively. It contained Rb, Pb, Fe, Ti, Ze, Ga, W as trace elements. According to its petrographic characteristics and chemical analysis results, the green mineral excavated Okasn-ri site was very similar to amazonite which is a green variety of microcline.
The Stupa of the Buddhist Monk Soyo at Baegyangsa temple, Jangseong was composed of fine-grained grayish sandstone. Under the polarizing microscope, it consisted of dominant quartz and some plagioclase, muscovite, opaque and little matrix. There were two sample considered as sandstone in Sageo-ri, Bugi-myeon and Ssang-ung-ri, Bhkha-myeon, Jangseong. However they contained more plagioclase and matrix than the stone stupa. In this study, the southwest part of sedimentary rocks in Jangseong was examined restrictedly. In order to presume the source rock of the stone stupa, it is necessary to study about the southeast area.
The results, through petrological and mineralogical study on stone artefacts and culural properties, will be providing for information to interpret provenance presumption and cultural exchange of ancestors.