United States

Pan Mine

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Categories

Overview

Mine TypeOpen Pit
Commodities
  • Gold
Mining Method
  • Truck & Shovel / Loader
Production Start... Lock
Mine Life2029
ShapshotThe Pan Mine is a fully operational mine. The existing infrastructure includes leach pads, single-stage ore crushing system and mineral processing facilities.

Owners

SourceSource
CompanyInterestOwnership
Calibre Mining Corp. 100 % Indirect
The Pan Mine is owned by Calibre Pan LLC, a wholly owned subsidiary of Calibre Mining.

Contractors

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Deposit type

  • Breccia pipe / Stockwork
  • Carlin-type
  • Epithermal

Summary:

Local and Property Geology
Geology in the Project area is dominated by Middle to Late Paleozoic stratigraphy overlain by minor Tertiary-aged volcanic units. Quaternary-aged detrital deposits are limited to drainage channels. Consequently, there is good bedrock exposure in most of the Project area.

Significant Mineralized Zones
Pan has three main mineralized zones; North, Central, and South. Gold mineralization spatially follows the Devils Gate Limestone – Pilot Shale contact in all three and is also controlled by steeply-dipping faults that trend north-south and secondarily by west-northwest (WNW) open fold axes. North Pan is dominated by: 1) near-vertical pipes and bodies of silicified solution breccia localized at the Pilot Shale–Devils Gate Limestone contact adjacent to the BFZ, and 2) stratiform-like modestly dipping breccia bodies and zones west of the BFZ focused near the locally folded Pilot Shale–Devils Gate contact. Central and South Pan have more argillic alteration than silicic. Mineralization in Central Pan is at the Pilot–Devils Gate contact and secondarily controlled by WNW trending open folds, and likely other subtle structures which have not been clearly identified. These open folds were not recognized from exploration drilling, and have only become apparent after exposure in the pit walls. Their significance in controlling mineralization is also subtle but has been confirmed by examination of blast hole assays. South Pan mineralization occurs in two zones: 1) a wide, clay-altered, near-vertical solution breccia zone along the west side of the BFZ, and 2) a stratigraphically-controlled zone east of the Branham Fault along the Pilot–Devils Gate contact. This zone dips northeast at about 55°.

The newly identified stratiform mineralization in the Banshee area, west of North Pan, is currently interpreted to represent the opposite limb ‘mirror image’ of the South Pan stratigraphically- controlled zone.

Mineral Deposit
The Pan gold deposits are Carlin-style, which are epithermal in origin, comprised of disseminated gold hosted in sedimentary rock units. Gold particles occur as micron to submicron size disseminations. Visible or coarse gold is not common in this type of deposit, and has not been observed at Pan. Controls on mineralization in Carlin-style systems and at the Pan Project include both structure and stratigraphy.

Geological Model
Gold mineralization is generally distributed along high-angle faults, and in a more tabular fashion subparallel to stratigraphy. Solution breccias developed in association with faults at the Pan Project serve as the primary host for gold mineralization, and have internal anisotropy that follows relic bedding orientation. Additional mineralization is hosted in favorable stratigraphy, such as the lower Pilot Shale and the upper siltier portions of the Devils Gate Limestone. More subtle mineralization controls occur as the axial traces of open folds, both anticlines and synclines trending obliquely (most commonly WNW) to the BFZ.

Reserves

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Mining Methods

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Comminution

Crushers and Mills

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Processing

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Production

CommodityUnits2023202220212020201920182017
Gold oz 000000000000000000000000034,29710,064
All production numbers are expressed as metal in doré.

Operational metrics

Metrics202320222021202020192018
Ore tonnes mined 00000000000000000000000000005,193,397 tons
Waste 0000000000000000000000000000006,293,144 tons
Total tonnes mined 0000000000000000000000000000000011,486,541 tons
Tonnes processed 00000000000000
Daily ore mining rate 00000000000000014,228 tons
Stripping / waste ratio 0000001.2
Daily mining rate 31,470 tons

Production Costs

CommodityUnits20232022202020192018
Total cash costs (sold) Gold USD 00000000 00000000 0000000 899 / oz   820 / oz  
All-in sustaining costs (sold) Gold USD 00000000 00000000 00000000 961 / oz   1,063 / oz  
Net of By-Product.

Financials

Units202320222020201920182017
Sustaining costs M USD  ....  Subscribe  ....  Subscribe  ....  Subscribe  ....  Subscribe 6.7  
Capital expenditures M USD  ....  Subscribe 6.7  
Revenue M USD  ....  Subscribe  ....  Subscribe 44.4   10.7  
Operating Income M USD  ....  Subscribe  ....  Subscribe 11.9  
Operating Cash Flow M USD  ....  Subscribe  ....  Subscribe 10.4  

Heavy Mobile Equipment

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Personnel

Mine Management

Source Source
Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Mar 28, 2024
....................... Subscription required ....................... Subscription required Subscription required Mar 28, 2024
....................... Subscription required ....................... Subscription required Subscription required Mar 28, 2024
....................... Subscription required ....................... Subscription required Subscription required Mar 28, 2024
....................... Subscription required ....................... Subscription required Subscription required Mar 28, 2024

EmployeesContractorsYear
Subscription required 2023
Subscription required 2022
Subscription required 2021
Subscription required Subscription required 2020
Subscription required 2019
Subscription required 2018

Aerial view:

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