GEOLOGICAL SOCIETY OF THE PHILIPPINES

THE RAPU RAPU POLYMETALLIC PROJECT -

GEOLOGY AND OVERVIEW OF PROJECT DEVELOPMENT

 

Rizaldy G. Palomaria

Senior Geologist

Lafayette Philippines, Inc.

 

 

 

ABSTRACT

 

The Rapu Rapu Project is located on the island of Rapu Rapu, 380km south east of Manila in the Republic of the Philippines.  The island is part of the Province of Albay and is approximately 45kms from Legaspi City, the provincial capital.

 

Based on the studies undertaken, the Rapu Rapu project has a positive economic return, and it will make a substantial contribution to the foreign exchange earnings of the Philippines.  The current life of mine is almost six years based on open pit mining, with the potential to extend this via underground development and additional exploration.  The case developed considers production of around 800,000 tpa ore for treatment through a conventional crushing, milling and flotation plant to produce separate copper and zinc concentrates for shipment to custom smelters.

 

The island itself is at the southern end of the northwest trending Eastern Regional Metamorphic complex.  This is a belt of greenschist facies rock of pre-Cretaceous age extending some 300km and forming much of the basement to the eastern part of the Philippine archipelago. The deposit is a massive sulphide deposit that occurs within a folded sequence of mafic and felsic volcanic rocks.  The sequence has been tightly folded into a megascopic fold plunging shallowly to the west.  The deposit thus consists of a highly deformed and locally dismembered massive sulphide pod composed predominantly of pyrite with lesser chalcopyrite and sphalerite.  Chalcocite, covellite, tetrahedrite, bornite and visible gold have also been identified.

 

In the last two years a number of significant milestones have occurred regarding project development. These have included the completion of a full blown Environmental Impact Assessment Study, completion of a Bankable Feasibility Study, undertaking of due diligence studies and the awarding of an Environmental Compliance Certificate from the Secretary of the DENR in July 2001. Work currently in progress is focusing on additional engineering studies and the attainment of a number of permits and approvals that will hopefully mean that project development can commence sometime in mid 2002.

 
To get the whole report , please call (633-9025) or email us: info@geolsocphil.org 
 

Geological Society of the Philippines

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128 Pioneer Street, Mandaluyong City, Philippines

Tel: +(63-2) 633-9025