@article{oai:fukuoka-edu.repo.nii.ac.jp:00000927,
 author = {上野, 禎一 and 千々和, 豊 and 棟上, 俊二 and 岩野, 庄市朗 and 榊, 昌宏},
 journal = {福岡教育大学紀要. 第三分冊, 数学・理科・技術科編 = Bulletin of Fukuoka University of Education. Part III, Mathematics, natural sciences and technology},
 month = {2012-02-10, 2020-09-28},
 note = {Fujimoto (1999a) found the antimony-ore remains on the northern slope of Mt. Amatsutsumi,
Nishimera-mura, Koyu-gun, Miyazaki Prefecture. In 2002 and 2003 we surveyed the area, took
some ore samples and investigated them by microscope, X-ray diffraction and electron microprobe
analysis. Main ore minerals are stibnite, pyrite and sphalerite. In a druse there exists a red
colored transparent little mineral with diamond luster on stibnite crystal. It is identified as
pyrostilpnite (Ag3SbS3) by ore microscope and electron microprobe analysis. The other druse
mineral of a light-yellow radial crystal, associated with stibnite, is found to be valentinite by the
X-ray diffraction analysis. By ore microscope we found two silver minerals coexistent with
stibnite; polybasite and miargyrite, which have the composition of (Cu, Ag, Fe) 12Sb4S13 and
(Ag, Cu, Fe) SbS2, respectively. Judging from the presence of only pyrite as for the Fe-S system
mineral and the low iron content (1.5 atomic %) in sphalerite, it is considered that this antimony
ore deposit would have been formed by the ore solution of a high sulfur fugacity. The salinity of
fluid inclusions in quartz is very high up to 18.5 wt.% and the homogenization temperature ranges
from 154 to 223 ℃., 福岡教育大学紀要. 第三分冊, 数学・理科・技術科編, Bulletin of Fukuoka University of Education. Part III, Mathematics, natural sciences and technology},
 pages = {73--80},
 title = {宮崎県児湯郡西米良村天包山のアンチモン鉱床に関する研究},
 volume = {61},
 year = {}
}