Mining Intelligence and News
Canada

Revel Ridge Project

Click for more information

Categories

Overview

Mine TypeUnderground
StagePreliminary Economic Assessment
Commodities
  • Gold
  • Silver
  • Zinc
  • Lead
Mining Method
  • Longhole open stoping
  • Sill mining
Backfill type ... Lock
Mine Life... Lock
SnapshotRevel Ridge Project is host to a high-grade gold and polymetallic orogenic sulphide deposit.

The Project has an ability to become a long life and robust polymetallic gold-silver mine as it has upside potential to expand current Mineral Resources through ongoing exploration diamond drilling, both down dips, along on-strike and on other occurrences.

Owners

SourceSource
CompanyInterestOwnership
Huakan International Mining Inc. 100 % Direct
Mineral tenure ownership is currently registered to Huakan International Mining Inc.

Rokmaster Resources Corp. had an exclusive option to earn a 100% interest in the Property. On April 9, 2024, Rokmaster Resources Corp. terminated the Option Agreement.

Contractors

Lock

- subscription is required.

Deposit type

  • Vein / narrow vein
  • Orogenic
  • Carbonate hosted

Summary:

The Revel Ridge Property lies within the Selkirk Mountains near the north end of the Kootenay Arc, a complex sequence of east dipping Neoproterozoic to Lower Paleozoic metasedimentary and metavolcanic miogeosynclinal rocks. The Kootenay Arc is characterized by tight to isoclinal folds and generally west verging thrust faults with greenschist grade regional metamorphism. The Revel Ridge Property is underlain by north to northwest-striking, moderate to steeply east-dipping metasedimentary and metavolcanic rocks of the Hamill and Lardeau Group and Badshot and Mohican Formation rocks. Gold mineralization at Revel Ridge is spatially related to a property scale, ductile deformation zone which ranges in width from approximately 5- 25 m and which has a strike length exceeding 5 km: The MDZ forms approximately 500 m into rocks of the hanging wall of the Akolkolex Thrust, which is an arc parallel regional scale thrust. Formation of the mineralized deformation zone may in part be related to the development of the larger regional scale thrust.

The RRMZ is the principal mineralized zone hosted within the MDZ which is considered to be a structurally controlled orogenic gold-polymetallic deposit. The RRMZ is a sheet-like tabular sulphide vein system hosted in a large planer deformation zone composed of banded massive and stringer arsenopyrite-pyrite-sphalerite-galena mineralization with appreciable content of gold and silver. The RRMZ has been traced on surface by drilling, geological mapping and soil geochemistry for a minimum strike length of 5.7 km and on-strike mineral showings occur along a structural trend up to approximately 8 km long. Concentrated drilling has intersected the RRMZ over a 2,200 m strike-length and at least 1,175 m in down-dip extent. The RRMZ generally dips approximately 55° to 60° to the northeast with an average true thickness of 2.5 m, but it may exceed 15 m locally in true thickness and has the potential to be expanded beyond the current drilled limits.

The silver-lead-zinc-rich RRYZ is considered to be a silver-zinc rich carbonate hosted replacement deposit composed of multiple parallel siliceous sphalerite-galena-bearing zones. The individual zones making up the RRYZ occur as lenticular bodies within silicified and marbleized limestone horizons. In comparison to the RRMZ, the RRYZ tends to have shorter strike lengths and shorter down dip lengths in the range of 500 m of strike and 200 m downdip. The zones may demonstrate periodicity with mineralization re-starting at permissive lithologic and structural points and potentially folded repetitions of carbonate stratigraphy.

Mineralization
At Revel Ridge, two main styles of mineralization have been documented: (1) a structurally controlled orogenic goldpolymetallic deposit; and (2) a silver-zinc rich carbonate hosted replacement deposit. The bulk of the economic resource within this deposit is hosted by the orogenic gold-polymetallic deposit, or the RRMZ.

Additional mineralized zones are principally mineralogic and spatial variations on the RRMZ, namely the RRHZ, RRFZ and RR28Z. Significant differences in mineralogy and deformational history suggests that the carbonate hosted silver-zinc-lead rich RRYZ did not developed contemporaneously with the RRMZ. Both the RRMZ and RRYZ have significant potential for expansion.

Revel Ridge Main Deformation Zone
The RRMZ is a structurally controlled orogenic precious and polymetallic (Au-Ag-Pb-Zn-As) deposit. The deformation zone that hosts the RRMZ has been traced along strike for >8 km and down-dip for at least 1,200 m. The deformation zone is effectively a mylonitic shear zone with a dominantly reverse and sinistral movement history. The zone has an average dip direction of 052°/58°. Mineralization occurs over an average true width of approximately 2.5 m.

Three styles of mineralization are associated with the RRMZ:
1. Early mineral quartz veins. Both in drill core and in underground workings, white quartz veins locally containing moderately coarse-grained black sphalerite occur throughout the Revel Ridge Mine area. The veins appear to boudinaged and embayed into fine-grained massive sulphide bands and appear to pre-date them. These veins range from a few centimetres up to 1.0 m in true width.
2. Syn-mineral banded massive to semi-massive sulphides – main stage mineralization. Massive sulphide bands consisting of compact grains of arsenopyrite, red-brown sphalerite, pyrite and minor galena form the dominant sulphide phases and are one of the principal hosts to gold mineralization, and higher-grade gold mineralization. Massive sulphide bands range from a few centimetres to decimetre wide and may continue for tens of metres unabated. The bands are commonly best developed at or near major lithologic changes, including quartzite-limestone contacts and quartzite-phyllite contacts. 3. Sheeted quartz – sulphide veins and veinlets. Narrow, cm- to mm-scale quartz-sulphide veinlets are noted throughout the RRMZ. These veinlets formed parallel to the dominant shear fabric and may contain sphalerite, arsenopyrite and pyrite along their margins. These veins and veinlets may carry significant base and precious metals and serve to increase the width of mineralized zones beyond that which would solely be accounted for by massive sulphide veins and replacements.

Deposit Types
The Revel Ridge Property area contains two distinctly different styles of mineralization: (1) highly planar, arsenical- and Au-rich, structurally controlled polymetallic sulphide zones and with no definitive host rock association, exemplified by the RRMZ; and two Ag-Zn-Pb deposits hosted only in marbleized and silicified limestone units, exemplified by the RRYZ.

RRMZ – Structurally Controlled Orogenic Au Deposit
Most of the Revel Ridge technical data suggests that the RRMZ is an orogenic Au deposit. Using the model developed Groves et al. (1998) and summarized by Sillitoe (2020), orogenic Au deposits are characterized globally by:
• Formation in the late stages of regional scale orogenic events.
• Commonly hosted in accretionary or collisional orogens at relatively deep paleo-depths of 5 km to 20 km below surface.
• Association with low salinity, Au- and arsenic-bearing fluids generated during the transition from the greenschist to amphibolite metamorphic grades.
• Productive mineralized zones forming over very significant vertical distances, potentially exceeding 2.0 km; and
• Association with the dilatant points of deep structural zones within segments of orogen-parallel, deep crustal faults (Sillitoe, 2020).

RRYZ Ag-Pb-Zn Occurrence – Deposit Model
At Revel Ridge, the second style of mineralization is associated with Ag enriched Zn-Pb deposits. Two deposit models have been used to describe Pb-Zn deposits in the northwestern portions of the Kootenay Arc, such as: (1) Shuswap Metamorphic Complex Pb-Zn Deposits; and (2) Kootenay Arc Carbonate Replacement Deposits.

Reserves

Lock

- subscription is required.

Mining Methods

Lock

- subscription is required.

Comminution

Crushers and Mills

Lock

- subscription is required.

Processing

Lock

- subscription is required.

Production

CommodityProductUnitsAvg. AnnualLOM
Gold Payable metal koz 1141,300
Gold Metal in conc./ doré koz 1,320
Silver Payable metal koz 94010,716
Silver Metal in conc./ doré koz 12,141
Zinc Concentrate kt 367
Zinc Payable metal M lbs 33372
Zinc Metal in concentrate M lbs 481
Lead Payable metal M lbs 20224
Lead Concentrate kt 225
Lead Metal in concentrate M lbs 254
Gold Equivalent Payable metal koz 1581,795

Operational metrics

Metrics
Daily ore mining rate  ....  Subscribe
Daily processing capacity  ....  Subscribe
Annual ore mining rate  ....  Subscribe
Annual processing capacity  ....  Subscribe
Waste tonnes, LOM  ....  Subscribe
Ore tonnes mined, LOM  ....  Subscribe
Total tonnes mined, LOM  ....  Subscribe
Tonnes processed, LOM  ....  Subscribe
* According to 2023 study.

Production Costs

CommodityUnitsAverage
Cash costs Gold USD  ....  Subscribe
All-in sustaining costs (AISC) Gold USD  ....  Subscribe
Assumed price Lead USD  ....  Subscribe
Assumed price Zinc USD  ....  Subscribe
Assumed price Silver USD  ....  Subscribe
Assumed price Gold USD  ....  Subscribe
* According to 2023 study / presentation.
** Net of By-Product.

Operating Costs

Currency2023
UG mining costs ($/t milled) CAD  ....  Subscribe
Processing costs ($/t milled) CAD  ....  Subscribe
G&A ($/t milled) CAD  ....  Subscribe
Total operating costs ($/t milled) CAD  ....  Subscribe
* According to 2023 study.

Project Costs

MetricsUnitsLOM Total
Initial CapEx $M CAD  ......  Subscribe
Sustaining CapEx $M CAD  ......  Subscribe
Closure costs $M CAD  ......  Subscribe
Total CapEx $M CAD  ......  Subscribe
UG OpEx $M CAD  ......  Subscribe
Processing OpEx $M CAD 833
Refining and treatment costs $M CAD  ......  Subscribe
Transportation (haulage) costs $M CAD 110.2
G&A costs $M CAD 41.6
Total OpEx $M CAD  ......  Subscribe
Total Taxes $M CAD  ......  Subscribe
Gross revenue (LOM) $M CAD  ......  Subscribe
EBITDA (LOM) $M CAD  ......  Subscribe
Pre-tax Cash Flow (LOM) $M CAD  ......  Subscribe
After-tax Cash Flow (LOM) $M CAD  ......  Subscribe
Pre-tax NPV @ 5% $M CAD  ......  Subscribe
Pre-tax NPV @ 10% $M CAD  ......  Subscribe
Pre-tax NPV @ 8% $M CAD  ......  Subscribe
After-tax NPV @ 5% $M CAD  ......  Subscribe
After-tax NPV @ 10% $M CAD  ......  Subscribe
After-tax NPV @ 8% $M CAD  ......  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

Lock

- subscription is required.


AV - Autonomous

Personnel

Mine Management

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Dec 29, 2023
....................... Subscription required ....................... Subscription required Subscription required Dec 29, 2023
....................... Subscription required ....................... Subscription required Subscription required Dec 29, 2023

Aerial view:

Lock

- subscription is required.