Mine detail: Misima Gold Deposit

Previously called 'UmunaGold Mines of PapuaAnd Kulumalia'

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Location

Lat / long:

-10.66169, 152.8054

Resource(M)

Primary:	Gold, Silver
Secondary:	Copper
Ore:	Chalcopyrite, Galena, Gold, Malachite, Pyrite, Silver, Sphalerite
Gangue:	Barite, Limonite, Quartz
Orebody form:	STEEP VEINS, BRECCIA

Production

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

Geology

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.

References

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ANNUAL REPORT.}{Deposit:: COX, D.P., WILLIAMSON, A. ET AL., MINERAL DEPOSIT MODELS APPLICABLE TO PAPUA NEW GUINEA: USGS UNPUBLISHED REPORT 86/5.}{Deposit:: CLARKE, D.S., LEWIS, R.W. & WALDRON, H.M., 1990, GEOLOGY AND TRACE-ELEMENT GEOCHEMISTRY OF THE UMUNA GOLD-SILVER DEPOSIT, MISIMA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.)