|Latitude & Longitude (WGS84):||38° 58' 0'' North , 141° 31' 10'' East|
|Latitude & Longitude (decimal):||38.96667,141.51944|
|Köppen climate type:||Cfa : Humid subtropical climate|
Arsenic and copper mine (arsenopyrite was the main ore mineral), started in 1949 and closed in 1974. Mesothermal sulphide veins hosted in early Cretaceous altered andesite and pyroclastics. During the uranium rush in the 1950s, the Matsuiwa mine's ores were also extensively researched because of their small uranium content, maximum 1.4% U3O8, although the average was considerably less.
12 valid minerals.
This geological map and associated information on rock units at or nearby to the coordinates given for this locality is based on relatively small scale geological maps provided by various national Geological Surveys. This does not necessarily represent the complete geology at this locality but it gives a background for the region in which it is found.
Click on geological units on the map for more information. Click here to view full-screen map on Macrostrat.org
252.17 - 358.9 Ma
|Paleozoic sedimentary rocks|
Age: Paleozoic (252.17 - 358.9 Ma)
Lithology: Sedimentary rocks
Reference: Chorlton, L.B. Generalized geology of the world: bedrock domains and major faults in GIS format: a small-scale world geology map with an extended geological attribute database. doi: 10.4095/223767. Geological Survey of Canada, Open File 5529.