Masbate is considered to be an example of a low sulphidation epithermal deposit, and exploration models using this deposit type are considered appropriate for the Masbate Gold Project area.

The Masbate gold deposits that are currently being mined are centred on a 5 km to 7 km wide northwest- to southeast-oriented mineralised volcanic block which is bounded by two interpreted north-west trending fault zones, the Pinanaan Fault to the east and the Malubi–Lanang–Balete Fault to the west. Approximately 31 gold vein deposits and prospects have been identified to date in the wider district, over an area of about 24 x 4 km. The mineralizing system being exploited in the open pit operations has a strike length of about 10 km, from Balete in the south to Pajo in the north. Mineralization has been tested to about 300 m depth, and remains open at depth.

The principal host rock to the gold mineralisation is a fractured andesitic–dacitic, tuffaceous agglomerate. Mineralisation occurs within quartz veins within the agglomerate, and also within associated altered and quartz stockworked wall rocks and breccias. The primary mineral associated with gold (+silver) mineralisation is quartz, both in the form of fracture-filling quartz veins and in the silicification of the host rocks. Gold is typically hosted in grey to white crystalline to chalcedonic quartz, which can sometimes be manganiferous, and is frequently associated with pyrite, marcasite, and minor amounts of chalcopyrite and sphalerite. Veins typically show epithermal colloform–crustiform banding and hydrothermal vein–breccia textures. High grade veins are generally narrow (<1 m) but some may reach 20 m in width, while sheeted zones with stockworks can reach as much 75 m in width. Individual veins may be traced for long distances, as much as 2 km. The main gold-bearing mineral is electrum.

The Masbate deposits are typical low-sulfidation stockwork systems hosted by andesitic volcanic rocks. Regional propylitic alteration gives way in/near the The mine is currently producing ore from two open-pit systems, Main Vein and Colorado. Mining is by conventional truck and shovel methods, with hydraulic shovels used in backhoe mode to minimize dilution. structures to silicification ±sericitization.

Ore mined from the MGP is processed on site within a conventional CIL processing plant owned and operated by PGPRC.

In detail the plant comprises:

-Primary single stage jaw crusher (Nordberg C160) which reduces ore to a top size of 150 mm. The product from the primary crusher is fed directly to the SAG Mill. A diverter gate on the conveyor system allows construction of a crushed ore stockpile and provides continuity of feed to the grinding circuit when the jaw crusher requires routine maintenance.
-Supplementary 3 stage crushing circuit consisting of a single Nordberg C125 jaw crusher feeding a secondary Nordberg GP200 cone crusher and two tertiary Nordberg HP4 cone crushers. The supplementary crushing circuit reduces a portion of run of mine ore to a 12 mm product which flows through the SAG Mill to the Ball Mill section of the grinding circuit.
-A single 6.0 MW Koppers SAG Mill receives feed from the primary crusher. Underflow discharge of product less than 12 mm diameter is directed to the Ball Mills. Overflow product is recycled back to SAG feed after passing through a pebble crusher circuit.
-Two parallel 3.6 MW Ball Mills to produce a product of P80 at 106 micron.
-Leaching of gold using cyanide in a conventional 8 x 3000 m3 tank circuit.
-Recovery of gold from loaded carbon using a normal elution and single pass electrowinning circuit, followed by smelting to produce gold bullion.