?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.au=Gemmell%2C+JB&rft.aulast=Gemmell&rft.aufirst=JB&rft.issue=3&rft.volume=87&rft.date=May+1992&rft.atitle=Stringer+system+and+alteration+zones+underlying+the+Hellyer+volcanic-hosted+massive+sulfide+deposit%2C+Tasmania%2C+Australia&rft.title=Economic+Geology&rft.pages=620-649&rft.genre=article