鑛物共生의 槪念에 對한 問題點과 鑛脈鑛床의 macrostructure

Some problems on the concept of mineral paragenesis and macrostructures of ore veins, with special reference to those of ore veins at the Ohtani mine, Kyoto prefecture, Japan

Concepts on mineral association, mineral paragenesis, and mineralization stage relating to macrostructures of vein filling in ore veins are briefly discussed. As an example of plutonic ore vein, macrostructures of vein filling of plutonic tungsten-tin-copper vein at the Ohtani mine, Kyoto Prefecture, Japan, one of representatives of plutonic tungsten-tin vein related genetically to acidic magmatism of late Cretaceous in the Inner zone of Southwest Japan, are examined. Based on macrostructures of vein filling, three major mineralization stages, are distinguished by major tectonic breaks. Sequence of mineralization, characteristic features of each mineralization stage, and variations of filling temperature and salinity ranges of fluid inclusions in minerals from stage Ⅰ to stage Ⅲ are summarized.