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http://dx.doi.org/10.9727/jmsk.2014.27.2.63

Petrological and Mineralogical Characteristics and Firing Temperature of Pottery in the 5-6th Century from Changnyeong, Gyeongsangnamdo  

Woo, Hyeon Dong (Korea Institute of Nuclear Safety)
Kim, Ok Soon (Gyeongsangbukdo Institute of Cultural Properties)
Jang, Yun Deuk (Department of Geology, Kyungpook National University)
Publication Information
Journal of the Mineralogical Society of Korea / v.27, no.2, 2014 , pp. 63-72 More about this Journal
Abstract
This study is conducted to investigate mineralogical characteristics and estimate firing temperature and condition of earthenwares in the 5-6th Century which are found at ancient tombs in Gyo-dong, Gyo-ri, Changnyeong-eup, Changnyeong-gun, Gyeongsangnam-do, TKorea by applying petrological methods. For this study, mineralogical analysis, microtexture observation and chemical analysis were conducted. According to observations using a polarization microscope, the potshreds are mainly composed of quartz and feldspar and consist of some felsic volcanics, tempers, opaques and mullite, hematite and spinel were found under XRD and FTIR analysis. The flow pastes are observed in many potshreds, and it indicate that this textures made by the mixing process or the pottery made from the mixture of 2 sorts of clays at least. They dose not show the features of the potshreds firing under temperature of $1,200-1,300^{\circ}C$ rather than the earthenware firing under relatively low temperature of $1,000^{\circ}C$ approximately because of the existence of a number of pores and the crystals of the specific minerals. The growths mostly of mullite on the surface and into the cracks of the potshreds indicate that the firing condition was not uniform to make even temperature and oxidation. Most of the pottery shreds have felsic volcanic fragments and some of them have cristobalite which is formed at the temperature of more than 1,470^{\circ}C$. But considering the estimated firing temperature, these are not formed during firing but included in the original clay.
Keywords
earthenware; firing temperature; firing condition; mullite;
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Times Cited By KSCI : 2  (Citation Analysis)
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