| Lat / long: | -10.66169, 152.8054 |
| Primary: | Gold, Silver |
| Secondary: | Copper |
| Ore: | Chalcopyrite, Galena, Gold, Malachite, Pyrite, Silver, Sphalerite |
| Gangue: | Barite, Limonite, Quartz |
| Orebody form: | STEEP VEINS, BRECCIA |
| Operation type: | Unknown |
| Production size: | Large |
| Development status: | Producer |
| Production years: | PRIOR TO 1911 ALLUVIAL WORKINGS; UNDERGROUND WORKINGS THROUGH 1942; 1988 TO PRESENT, OPEN PIT. |
| First production started: | 1888 |
| Host rock: | Sisa Association |
| Host type: | Metasedimentary Rock,Greenstone,Schist,Volcanic Breccia (Agglomerate) |
| Associated rock: | Boiou (Intrusive) Microgranodiorite |
| Associated type: | Diorite |
| Structure: | Ridge System, Gentle Folding., Stockwork Veins And Breccia Matrix. |
| Tectonic: | N30w Striking Umuna Fault Zone, High Angle Fault Structure. |
| Alteration processes: | Chlorite, Epidote, Clinozoisite, Sericite, Smectite, Deep Oxidation. |
| MRDS | RE00014 |
| DEP | 10055078 |
| Reference | {Deposit:: PLACER DOME, INC., 1988, INTERNATIONAL ANALYSTS TOUR REPORT.}{Deposit:: GRAY, MATT (PLACER DOME), 1990, ABSTRACT FROM TECHNICAL PRESENTATION TO THE DENVER REGION EXPLORATION GEOLOGISTS SOCIETY 10 SEPT.,1990.}{Deposit:: PLACER DOME, 1990, ANNUAL REPORT.}{Deposit:: COX, D.P., WILLIAMSON, A. ET AL., MINERAL DEPOSIT MODELS APPLICABLE TO PAPUA NEW GUINEA: USGS UNPUBLISHED REPORT 86/5.}{Deposit:: CLARKE, D.S., LEWIS, R.W. & WALDRON, H.M., 1990, GEOLOGY AND TRACE-ELEMENT GEOCHEMISTRY OF THE UMUNA GOLD-SILVER DEPOSIT, MISIMA ISLAND, PAPUA NEW GUINEA, IN JOURNAL OF GEOCHEMICAL EXPLORATION VOL 35,NO.1-3, JAN 1990, P. 201-223.}{Production:: PLACER DOME, 1988. PLACER DOME, 1990.} |
| Reporter | Moyer, Lorre A. (Marcus, S.M.) |