The iron compounds in minerals of obsidians from the continental Far East, Mount Baekdu (Baedusan) near the Sino-Korean border and Kyushu in southwest Japan were studied using ⁵⁷Fe Mössbauer spectroscopy. The mineral Pyroxene (FeSiO₃) in obsidian was found in the metamorphic rocks of Mount Beakdusan and Kyushu. However, the mineral biotite in obsidian was found in Kyushu only. The chemical compounds of the microlites in obsidians from Mount Baekdu are quite different from those in the Kyushu obsidians. The Mössbauer spectrum measured on the Baekdusan obsidian was fitted using two sextets, two ferrous iron doublets, and a ferric iron doublet tentatively assigned to clinopyroxene. Two sextets result from the nonstoichiometric magnetite. In contrast, Kyushu obsidians consisted of two sextets, a ferrous iron doublet for clinopyroxene, and a ferric iron doublet tentatively associated with biotite. In mineralogical and geochemical studies on the Baekdusan and Kyushu obsidians, the origination of the magma compositions and the crystallization environments were confirmed to have been different.

中文翻译：

---

利用莫斯鲍尔光谱法研究史前黑曜石的来源

使用⁵⁷ FeMössbauer光谱法研究了远东大陆，中朝边界附近的白头山（Baedusan）和日本西南部的九州的黑曜石矿物中的铁化合物。矿物P（FeSiO ₃在黑曜石中发现于Beakdusan山和九州的变质岩中。然而，黑曜石中的矿物黑云母仅在九州发现。白头山黑曜石中微晶石的化学成分与九州黑曜石中的微晶石的化学成分完全不同。在Baekdusan黑曜石上测得的Mössbauer谱图使用了两个六重音，两个亚铁双峰和暂定为次氯吡喃的三重铁双峰进行拟合。非化学计量磁铁矿产生了两个六边形。相比之下，九州的黑曜石则由两个六重体组成，一个是铁的双联铁（用于铁环吡cl烯），另一个是与黑云母结合的三重铁。在有关白头山和九州黑曜石的矿物学和地球化学研究中，