Gold-siver Ore Deposit of the Tochibora Mine, Kamilka, Gifu Prefecture
1974 Volume 24 Issue 124 Pages 111-118
Details
1974 Volume 24 Issue 124 Pages 111-118
The gold-silver ore deposit has been discovered in the Tochibora mine area through the recent prospecting and here is given a summary of the several features of this deposit as follows ;
1) The gold-silver ore deposit occurs in the hydrothermally altered gneisses, adjacent to the skarn ore deposits. Gold and silver minerals are concentrated heavily in quartz veins and also disseminated weakly in the altered zone.
2) The emplacement of the gold-silver ore deposit is controlled by the general geo-logical structure, showing plunge of 26°-38° to SW, concordant with that of the surrounding skarn ore deposits.
3) The ore minerals of the deposit are mainly native gold and pyrargyrite, associated with galena, sphalerite, chalcopyrite, arsenopyrite and pyrite. The deposition of these minerals is considered to have succeeded the skarnization of the main Tochibora ore deposits, and tc represent the latest stage of the mineralization in this area.
