Mining Intelligence and News
Dominican Republic

Romero Project

Click for more information



Mine TypeUnderground
  • Gold
  • Copper
  • Silver
  • Zinc
Mining Method
  • Sub-level stoping
  • Mechanized Cut & Fill
  • Overhand Cut & Fill
  • Underhand Cut & Fill
  • Longhole stoping
Backfill type ... Lock
Mine Life... Lock
SnapshotIn October 2015, GoldQuest submitted an Exploitation Application to advance the 100% owned Romero Project in the Dominican Republic. The Company received notification in January 2018 that the Minister of Energy and Mines ("MEM") of the Dominican Republic has approved GoldQuest's Exploitation Permit Application. The Application has been sent to the President for ratification, which is required prior to receiving the final Exploitation Permit.

As of September 30, 2022, the Company has not received the Exploitation Permit nor clarification from the Dominican Republic’s government on any timeframe for receipt of the Exploitation Permit.


GoldQuest Mining Corp. 100 % Indirect
GoldQuest owns a 100% interest in the Tireo Property and Romero Project through its wholly owned Dominican subsidiary, GoldQuest Dominicana), via GoldQuest Mining (BVI) Corp., a British Virgin Islands company.

Deposit type

  • Epithermal
  • Breccia pipe / Stockwork


Romero is located on the south side of the Central Cordillera of Hispaniola and is hosted by the Cretaceous-age Tireo Formation volcanic rocks and limestones, which formed in an island arc environment. The deposit geology is a relatively flat lying sequence of intercalated subaqueous, intermediate to felsic volcanic and volcaniclastic rocks and limestones on the west side of thick rhyolite flows or domes. Mineralization is relatively stratabound and flat lying and is mainly hosted by a dacite breccia tuff.

Mineralization outcrops in a number of places were eroded by rivers and streams, and continuity under barren cap rock has been demonstrated by drilling. Hydrothermal alteration and gold mineralization can be traced for over 2,200 m from Romero to Romero South and beyond to the south.

The thickness of the altered dacite tuff breccia horizon is up to about 65 m at Romero South and up to more than 200 m (open) at Hondo Valle and Romero. The mineralized horizon is capped by limestone or dacite to andesite lavas.

Mineralization is intermediate sulphidation epithermal in style. The mineralization is associated with quartz-pyrite, quartz-illite-pyrite and illite-chlorite-pyrite alteration. Alteration is generally strongest in the upper part of the mineralized zone and decreases in intensity with depth. Gold mineralization is associated with disseminated to semi-massive sulphides, sulphide veinlets and quartz-sulphides. The sulphides comprise pyrite with sphalerite, chalcopyrite and galena. Oxidation is shallow, to a depth of 10 m to 15 m.

High grade mineralization at the Romero deposit takes the shape of vertically stacked sub-parallel irregular lenses which generally dip to the northeast at an average angle of 20°. Each lens ranges in thickness from 10 m to 40 m in the middle and generally tapers to zero width at the edges, but the continuity of the lenses in all directions is inconsistent. The spacing between lenses is also inconsistent and ranges up to 50 m. Generally, lower grade mineralization surrounds the higher grade lenses.

The strike length of the main portion of the mining resource is 430 m. Two smaller pods of high grade mineralization exist approximately 200 m along strike to the southeast of the main larger main economic body. The deepest mining level is 420 m below surface (680 m level) and the highest mining level is 85 m below surface (1,000 m level), meaning the total vertical extent of the mining resource is 320 m. Perpendicular to strike, the deposit is about 170 m wide.



- subscription is required.

Mining Methods


- subscription is required.


Crushers and Mills


- subscription is required.



- subscription is required.


CommodityProductUnitsAvg. AnnualLOM
Gold Metal in concentrate koz 640
Copper Metal in concentrate M lbs 119
Copper Concentrate kt 64449
Silver Metal in concentrate koz 434

Operational metrics

Daily ore mining rate 2,800 t *
Daily milling rate 2,702 t *
Daily milling capacity 2,800 t *
Annual ore mining rate 1,008 kt *
Annual milling capacity 1,022 kt *
Waste tonnes, LOM 940 kt *
Ore tonnes mined, LOM 7,031 kt *
Total tonnes mined, LOM 7,971 kt *
Tonnes milled, LOM 7,031 kt *
* According to 2016 study.

Production Costs

Cash costs Gold Equivalent USD 489 / oz *  USD
Cash costs Gold USD 669 / oz *  USD
Cash costs Gold USD 191 / oz * **  USD
All-in sustaining costs (AISC) Gold USD 595 / oz * **  USD
Assumed price Copper USD 2.5 / lb *  USD
Assumed price Silver USD 20 / oz *  USD
Assumed price Gold USD 1,300 / oz *  USD
* According to 2016 study / presentation.
** Net of By-Product.

Operating Costs

UG mining costs ($/t milled) USD 27.7 *  
Processing costs ($/t milled) USD  ....  Subscribe
G&A ($/t milled) USD  ....  Subscribe
Total operating costs ($/t milled) USD  ....  Subscribe
* According to 2016 study.

Project Costs

MetricsUnitsLOM Total
Pre-Production capital costs $M USD  ......  Subscribe
Sustaining CapEx $M USD  ......  Subscribe
Closure costs $M USD  ......  Subscribe
Total CapEx $M USD  ......  Subscribe
UG OpEx $M USD  ......  Subscribe
Processing OpEx $M USD 81.4
G&A costs $M USD 38.3
Total OpEx $M USD  ......  Subscribe
Total Taxes $M USD  ......  Subscribe
Royalty payments $M USD  ......  Subscribe
Gross revenue (LOM) $M USD  ......  Subscribe
Net Operating Income (LOM) $M USD  ......  Subscribe
Pre-tax Cash Flow (LOM) $M USD  ......  Subscribe
After-tax Cash Flow (LOM) $M USD  ......  Subscribe
Pre-tax NPV @ 0% $M USD  ......  Subscribe
Pre-tax NPV @ 5% $M USD  ......  Subscribe
After-tax NPV @ 0% $M USD  ......  Subscribe
After-tax NPV @ 5% $M USD  ......  Subscribe
Pre-tax IRR, %  ......  Subscribe
After-tax IRR, %  ......  Subscribe
Pre-tax payback period, years  ......  Subscribe
After-tax payback period, years  ......  Subscribe

Required Heavy Mobile Equipment


- subscription is required.


Mine Management

Job TitleNamePhoneProfileRef. Date
....................... Subscription required ....................... Subscription required ........... Subscription required Subscription required Jan 19, 2024

Total WorkforceYear
...... Subscription required 2016


- subscription is required.