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http://dx.doi.org/10.9727/jmsk.2014.27.4.243

Mineralogical Study on Microlites in the Baekdusan Obsidian and the Gadeokdo Obsidian Artefacts  

Jin, Mi Eun (Department of Geological Sciences and Research Institute of Natural Sciences, Gyeongsang National University)
Moon, Sung Woo (Department of Geological Sciences and Research Institute of Natural Sciences, Gyeongsang National University)
Ryu, Choon Kil (Korea Institute of Geological Environments)
Jwa, Yong-Joo (Department of Geological Sciences and Research Institute of Natural Sciences, Gyeongsang National University)
Publication Information
Journal of the Mineralogical Society of Korea / v.27, no.4, 2014 , pp. 243-249 More about this Journal
Abstract
We conducted investigations into the morphological characterstics and chemical compositions of the microlites included in the obsidians from the North Korean side Baekdusan (NK) and in the obsidian artefacts from the Busan Gadeokdo prehistoric site (BG). The morphology of the microlites from the NK can be divided into three groups, and trichite-acicular and trichite-asteroidal types are predominant. On the other hand the microlites from the BG show various morphological features such as acicular, margarite, lath, and asteroidal types. Silicate microlites from the NK are mostly of Ca-pyroxene compositions (hedenbergite to augite), whereas those from the BG are mostly of biotite (annite) with small amount of clinopyroxene (ferrosilite). It is well understood that the microlites from the NK are different from those from the BG in terms of the morphology, mineral content and mineral composition. Thus the obsidian aretefacts from the Busan Gadeokdo prehistoric site seem to have no genetical relationship to the obsidians from the Baekdusan.
Keywords
obsidian; microlite; chemical composition; Baekdusan; Busan Gadeokdo;
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Times Cited By KSCI : 2  (Citation Analysis)
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