RE:RE:RE:RE:RE:RE:NewsGood information about tuffite layer in VMS https://link.springer.com/article/10.1007/s00126-013-0499-7 Now read this and you will see a complexity of geology like it seem at Kwai. The LaRonde Penna Au-Rich Volcanogenic Massive Sulfide Deposit, Abitibi Greenstone Belt, Quebec: Part I. Geology and Geochronology