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Canada
Klaza Project

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 Location:
49 km W from Carmacks, Yukon, Canada

  Project Contacts:
1016-510 West Hastings Street
Vancouver
British Columbia, Canada
V6B 1L8
Phone  ...  Subscription required
Fax604-687-2582
WebsiteWeb
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  • Overview
  • Owners
  • Geology
  • Mining
  • Processing
  • Production
  • Reserves
  • Costs & Financials
  • Fleet
  • Personnel
  • Filings & News

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Overview

StagePreliminary Economic Assessment
Mine TypeOpen Pit & Underground
Commodities
  • Gold
  • Silver
  • Lead
  • Zinc
Mining Method
  • Truck & Shovel / Loader
  • Longhole open stoping
  • Backfill
Mine Life12 years (as of Jan 1, 2020)
October 12, 2022 - Rockhaven Resources is announced the completion of the 2022 exploration program at its 100% owned and road-accessible Klaza property.

The 2022 program was designed to upgrade as many of the remaining inferred mineral resources to the indicated category as possible for their inclusion in the upcoming Pre-feasibility study. Additionally, all of the required information from site-based work was collected, which included geotechnical, ground stability, environmental and metallurgical data. The company anticipates the completion of the fully-funded Pre-feasibility study by mid-2023.
Latest NewsRockhaven Drills Resource Step-Out Hole Grading 101 g/t gold & 107 g/t silver over 1.30 m at Its Klaza Gold-Silver Project, Yukon     January 18, 2023


Owners

Source: p. 2
CompanyInterestOwnership
Rockhaven Resources Ltd. 100 % Direct
The Property comprises 1,478 mineral claims that are 100% owned by Rockhaven.

Contractors

Subscription required - Subscription is required.


Deposit Type

  • Breccia pipe / Stockwork
  • Epithermal
  • Vein / narrow vein


Summary:

The metals of primary interest at the Property are gold and silver. These metals are intimately associated with lead, zinc and copper in various forms and concentrations throughout the mineralizing system. Gold and silver enriched mineralization is developed within a northwest trending structural corridor, which is interpreted to have focused fluid flow away from weak porphyry centres related to a Late Cretaceous stock in the southeastern corner of the Property. Several of the mineralized structural zones are continuously mineralized for strike lengths of up to 2,400 m, and at least one of the structures is mineralized to a depth of 520 m down-dip from the current geographic surface. The mineralized structures remain open to extension along strike and down-dip.

Fluid inclusion work reveals that the veins formed at shallow depths (<1 km) and have low to intermediate sulfidation epithermal fluid characteristics (Main, 2015). Textures and mineralogy observed at the Property share a number of similarities with Carbonate Base Metal (CBM) deposits (Tarswell and Turner, 2013).

CBM deposits are a recently recognized sub-class of epithermal deposits that encompass a family of similar deposits located around the world. CBM deposits have mainly been discovered around the Pacific Rim and include multi-million ounce gold deposits such as Porgera (New Guinea), Buritica (Colombia) and Kelian (Indonesia).

The CBM class of deposits has yet to be identified el ........


Mining Methods

  • Truck & Shovel / Loader
  • Longhole open stoping
  • Backfill


Summary:

Mineral Resources occur as a selection of vein systems contained in two distinct zones–Klaza and BRX. Each zone can be further broken down by relative location: Western, Central and Eastern. At Central Klaza and BRX potential exists in the eastern extremity for underground mining. The eastern extent is naturally separated from the Central zone by low grade mineralization. The eastern extent of the Central Klaza zone will be accessed from the Klaza pit and at Central BRX zone via underground level development.

The Klaza and BRX zones lend themselves to open pit mining as the mineralized veins are located close to surface. The surrounding topography is moderately steep with sufficient flat areas suitable for the placement of waste dumps and stockpiles. Open pit mining plans to use conventional drill-and-blast equipment and truck and excavator mining equipment supplied by a contractor. Recommendations for the pit slope design are based on probabilistic kinematic analyses. The bench height was limited to 10 m. The berm width of 6.0 m is considered to be sufficient to ensure retention of bench-scale size failures.

Mineralization has been identified through exploration drilling below the potential open pits to a depth of approximately 450 m below surface. Both zones remain open at depth and along strike. Both the Klaza and BRX zones are amenable to mining by underground methods. The proposed underground mining method is Longhole stoping with waste rock fill. ........


Crushing and Grinding
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Processing

Flow Sheet: Subscription required

Summary:

- subscription is required.


Projected Production:

CommodityUnitsLOM
Gold kg 23,373
Silver kg  ......  Subscription required
Lead t  ......  Subscription required
Zinc t  ......  Subscription required
All production numbers are expressed as payable metal.

Operational Metrics:

Metrics
Waste tonnes, LOM  ......  Subscription required
Ore tonnes mined, LOM  ......  Subscription required
Daily processing capacity  ......  Subscription required
Tonnes processed, LOM  ......  Subscription required
Annual processing capacity  ......  Subscription required
Annual ore mining rate  ......  Subscription required
* According to 2020 study.
Subscription required - Subscription is required.

Reserves at July 5, 2018:
Cut-off grades applied to the pit constrained are 1.0 g/t AuEq.
Cut-off grades applied to the underground are 2.3 g/t AuEq.

CategoryOreTypeTonnage CommodityGradeContained Metal
Indicated In-Situ (OP) 2,447 kt Gold 5.3 g/t 414 koz
Indicated In-Situ (UG) 2,010 kt Gold 4.2 g/t 272 koz
Indicated In-Situ (OP) 2,447 kt Silver 90 g/t 7,096 koz
Indicated In-Situ (UG) 2,010 kt Silver 108 g/t 6,974 koz
Indicated In-Situ (OP) 2,447 kt Lead 0.7 % 39,143 k lbs
Indicated In-Situ (UG) 2,010 kt Lead 0.8 % 34,125 k lbs
Indicated In-Situ (OP) 2,447 kt Zinc 1 % 52,935 k lbs
Indicated In-Situ (UG) 2,010 kt Zinc 0.9 % 39,172 k lbs
Indicated In-Situ (OP) 2,447 kt Gold Equivalent 6.7 g/t 529 koz
Indicated In-Situ (UG) 2,010 kt Gold Equivalent 5.8 g/t 378 koz
Inferred In-Situ (OP) 1,754 kt Gold 2.6 g/t 147 koz
Inferred In-Situ (UG) 3,960 kt Gold 2.8 g/t 359 koz
Inferred In-Situ (OP) 1,754 kt Silver 43 g/t 2,429 koz
Inferred In-Situ (UG) 3,960 kt Silver 90 g/t 11,472 koz
Inferred In-Situ (OP) 1,754 kt Lead 0.4 % 14,897 k lbs
Inferred In-Situ (UG) 3,960 kt Lead 0.7 % 62,647 k lbs
Inferred In-Situ (OP) 1,754 kt Zinc 0.5 % 18,599 k lbs
Inferred In-Situ (UG) 3,960 kt Zinc 0.8 % 70,578 k lbs
Inferred In-Situ (OP) 1,754 kt Gold Equivalent 3.3 g/t 187 koz
Inferred In-Situ (UG) 3,960 kt Gold Equivalent 4.2 g/t 538 koz

Commodity Production Costs:

CommodityUnitsAverage
Cash costs Gold Equivalent USD  ......  Subscription required&nbs
All-in sustaining costs (AISC) Gold Equivalent USD  ......  Subscription required&nbs
Assumed price Lead USD  ......  Subscription required&nbs
Assumed price Zinc USD  ......  Subscription required&nbs
Assumed price Silver USD  ......  Subscription required&nbs
Assumed price Gold USD  ......  Subscription required&nbs
* According to 2020 study / presentation.
Subscription required - Subscription is required.

Operating Costs:

Units2020
OP mining costs ($/t mined) CAD 4.5 *
UG mining costs ($/t milled) CAD  ......  Subscription required
Combined mining costs ($/t milled) CAD  ......  Subscription required
Processing costs ($/t milled) CAD  ......  Subscription required
G&A ($/t milled) CAD  ......  Subscription required
Total operating costs ($/t milled) CAD  ......  Subscription required
* According to 2020 study.
Subscription required - Subscription is required.

2020 Study Costs and Valuation Metrics :

MetricsUnitsLOM Total
Pre-Production capital costs $M CAD  ......  Subscription required
Sustaining CapEx $M CAD  ......  Subscription required
Total CapEx $M CAD  ......  Subscription required
OP/UG OpEx $M CAD  ......  Subscription required
Processing OpEx $M CAD 311
G&A costs $M CAD 112
Total OpEx $M CAD  ......  Subscription required
Net revenue (LOM) $M CAD  ......  Subscription required
Pre-tax Cash Flow (LOM) $M CAD  ......  Subscription required
After-tax Cash Flow (LOM) $M CAD  ......  Subscription required
Pre-tax NPV @ 5% $M CAD  ......  Subscription required
After-tax NPV @ 5% $M CAD  ......  Subscription required
Pre-tax IRR, %  ......  Subscription required
After-tax IRR, %  ......  Subscription required
Pre-tax payback period, years  ......  Subscription required
Subscription required - Subscription is required.


Proposed Heavy Mobile Equipment as of July 14, 2020:
HME TypeModelSizeQuantityLeased or
Contractor
Bolter ....................... Subscription required
....................... Subscription required ....................... Subscription required
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....................... Subscription required ....................... Subscription required ....................... Subscription required ....................... Subscription required Leased
....................... Subscription required ....................... Subscription required
....................... Subscription required ....................... Subscription required
....................... Subscription required ....................... Subscription required Leased
....................... Subscription required ....................... Subscription required Leased
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....................... Subscription required ....................... Subscription required ....................... Subscription required ....................... Subscription required Leased
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....................... Subscription required ....................... Subscription required ....................... Subscription required
....................... Subscription required ....................... Subscription required Leased
Subscription required - Subscription is required.

Mine Management:

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Oct 31, 2022
....................... Subscription required ....................... Subscription required Subscription required Jul 10, 2020
....................... Subscription required ....................... Subscription required Subscription required Jul 10, 2020
....................... Subscription required ....................... Subscription required Subscription required Oct 31, 2022
Subscription required - Subscription is required.

Staff:

EmployeesContractorsTotal WorkforceYear
Subscription required Subscription required Subscription required 2020

Corporate Filings & Presentations:

DocumentYear
Corporate Presentation 2022
Press Release 2022
................................... Subscription required 2020
Preliminary Economic Assessment 2016
Subscription required - Subscription is required.

News:

NewsDate
Rockhaven Drills Resource Step-Out Hole Grading 101 g/t gold & 107 g/t silver over 1.30 m at Its Klaza Gold-Silver Project, Yukon January 18, 2023

Subscription required - Subscription is required.

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