@article{oai:air.repo.nii.ac.jp:00004612, author = {ISHIYAMA, Daizo and MATSUEDA, Hiroharu and DERKEY, Robert E. and SNODDY, William M.}, issue = {1}, journal = {Journal of the Mining College, Akita University. Ser. A, Mining geology}, month = {Mar}, pages = {1--18}, title = {Diatreme-hosted gold mineralization at the Montana Tunnels deposit, Southwestern Montana, U.S.A.}, volume = {8}, year = {1994} }