探鉱の観点から見た松尾鉱床(第1報)
特に品位に基く諸測定について
1956 年 6 巻 21 号 p. 135-142
詳細
1956 年 6 巻 21 号 p. 135-142
As a result of the geological study of the large area of the volcanic groups of Mt. Iwate and Hachimantai, the stages of volcanic activity related to the sulphur deposits have been determined. It has been possible to draw some important conclusions on the tendencies of the prospecting for sulphur and pyrite deposits in the Matsuo mine.
The author was able to examine a very great number of specimens of ores and rocks, and also chemical analyses of these ores 17, 300 were collected in the east-west drifts extending as long as 100, 000m. From the results of observations based on these data, the position of a diffusion center of ascending mineralizing solutions and vapour was located; the area of its diffusion. center was assumed to be relatively small. The diffusion of mineralizer from the center is the main factor in the formation of the ore shoot in the Matsuo deposit. Therefore, the principle of prospecting in this mine based on the geological and geochemical conclusions was established.
