Slide 1: Pursuing a Revival in Gold
3D Modelling & Artificial Intelligence- TSX-V: RVG revival-gold.com OTCQX: RVLGF Driven Targeting December 9, 2021 Beartrack-Arnett Project PURSUING A REVIVAL IN GOLD
Slide 2: Cautionary Notes
CAUTIONARY NOTES This document has been prepared by Revival Gold Inc. (“Revival Gold” or, the “Company”) for evaluation of the Company by the recipient. The information contained in this presentation is derived from estimates made by the Company, information that has been provided to the Company by
Slide 3: Positioned in North America
POSITIONED IN NORTH AMERICA • 2nd largest gold-producing region in the world1 • Idaho is ranked Top-10 in the world for investment in mining by the Fraser Institute2 • 27 M ounce endowment of undeveloped gold3 Source: (1) World Gold Council ; (2) Fraser Institute 2020 Survey of Investment Attractive
Slide 4: Beartrack-Arnett
BEARTRACK-ARNETT Former producer – open pit, heap leach mine produced 100,000 oz gold p.a. in 1990’s1 • Land position re-assembled in 2017-18 • RPA February 2020 resource2: ▪ 10-15 ktpd heap leach and 20 ktpd mill scenarios ▪ 1.35 million oz @ 1.15 g/t Au Indicated Resource ▪ 1.64 million oz @ 1.08
Slide 5: Mackinaw District Geology
MACKINAW DISTRICT GEOLOGY • Proterozoic metasedimentary rocks • Proterozoic rapakivi granite • Cambro-Ordovician Arnett Intrusive Complex • Cretaceous granodiorite Beartrack • Tertiary granite (Bobcat Gulch) Arnett • Cenozoic deposits (Challis Volcanics - tuffs, flows & volcaniclastics; gravels & ti
Slide 6: Project Geology – Beartrack
PROJECT GEOLOGY – BEARTRACK • Hosted by Proterozoic rocks • Yrg in the north; Yy in the south • Related to long-lived NNE- trending fault system - PCSZ • Lateral and vertical continuity: five deposits over 5 km of strike & to 600 m depth • Mineralization: subvertical stockwork of quartz, pyrite, ars
Slide 7: Project Geology Arnett
PROJECT GEOLOGY ARNETT • Hosted by K-rich Cambro- Ordovician rocks Haidee • Oxidized to approximately 150 m • Extensive post-mineral cover • NE-trending, moderately SW dipping mineralized zones • Mineralization: quartz-pyrite (FeOx) veinlets • Alteration: potassic (+/- magnetite), oxidation of magne
Slide 8: Beartrack-Arnett Compilation of Data Sets
BEARTRACK-ARNETT COMPILATION OF DATA SETS HISTORICAL DATA SETS RECENT DATA SETS • 40,278 m of core drilling • 29,966 m of core drilling • 124,120 m of reverse-circulation drilling • 965 soil samples – Arnett • 620 samples of downhole multi-element • 203 rock samples – Arnett geochemistry • 3,786 sam
Slide 9: Beartrack-Arnett AI Assisted Targeting Objectives
BEARTRACK-ARNETT AI ASSISTED TARGETING OBJECTIVES • Build an exploration vector model framework to query • Identify exploration targets • Refine understanding of known targets • Understand controls on high-grade mineralization at Beartrack • Identify areas of potential resource addition TSX-V: RVG |
Slide 10: Beartrack-Arnett Methodology
BEARTRACK-ARNETT METHODOLOGY • Compile data into one common 3D GoCAD Mining Suite project • Regional structural and geological context modeling • Inversion of IP data • Magnetic modeling and constrained inversion • Feature engineering • Targeting • Deposit-scale interpretation TSX-V: RVG | OTCQX: RV
Slide 11: Regional Structural Modelling
REGIONAL STRUCTURAL MODELLING The regional structures are interpreted from the USGS geological map, the local mapping data from Revival and the potential field dataset under a two (2) event thrust and fold belt setting TSX-V: RVG | OTCQX: RVLGF 11
Slide 12: Regional Geological Framework
REGIONAL GEOLOGICAL FRAMEWORK The base lithological unit is comprised of Proterozoic amphibolite-magnetite-hornblende gneiss as part of the basement. These rocks crop out to the NW of the AOI and are interpreted to be the source of some of the regional magnetic highs, such as the Jefferson Creek mag
Slide 13: Regional Geological Framework
REGIONAL GEOLOGICAL FRAMEWORK The Proterozoic megacrystic granite (rapakivi granite) and augen gneiss are modeled as overlying the amphibole- magnetite-horn hornblende gneiss. The megacrystic granite crops out east of the Panther Creek fault. TSX-V: RVG | OTCQX: RVLGF 13
Slide 14: Regional Geological Framework
REGIONAL GEOLOGICAL FRAMEWORK The Swauger Formation (gray) mapped as a syncline, cut and displaced by the Panther Creek shear zone was added to the model together with the local volcanic (green) and cover sequences (brown) that appears to be preserved as a local NNE-trending graben. TSX-V: RVG | OTC
Slide 15: Regional Geological Framework
REGIONAL GEOLOGICAL FRAMEWORK TSX-V: RVG | OTCQX: RVLGF 15
Slide 16: Magnetic Modelling and Inversions
MAGNETIC MODELLING AND INVERSIONS 2D fault interpretation with 1VD mag • Interpret magnetic, IP, and DEM data are used to identify main domains and lineaments • Synthesis of interpretations to produce a 2D fault network 3D fault and geology model • Faults given nominal dips based on previous interpr
Slide 17: Magnetic Modelling and Inversions
MAGNETIC MODELLING AND INVERSIONS Starting model lithology • Attribute voxet with geology property from model surfaces • Model used to initialize with starting magnetic susceptibility Starting model magnetic • Heterogenous magnetic susceptibility susceptibility recovered by constrained inversion to
Slide 18: Magnetic Modelling and Inversions
MAGNETIC MODELLING AND INVERSIONS • The residual component of the magnetic model is calculated using: susceptibility model – inversion results • Isosurface of the magnetic residual is extracted from the model at a value of 0.005 • The surface represents the area where not enough magnetic material is
Slide 19: Mineral System Analysis
MINERAL SYSTEM ANALYSIS Feature Vector Metric The mineral system approach is used to develop key exploration Anticlines Anticline hinges Distance to Au-As-Cu-Pb-W-Te-Mo-Bi anomaly Soil and drillhole geochemistry Intensity vectors associated to the Beartrack – Arnett deposits. These Bull quartz, brec
Slide 20: Feature Engineering
FEATURE ENGINEERING Features statistical distribution in positive (red) and negative (blue) learning examples The exploration vectors and modelling enabled Mira to generate 30 distinct properties in a rasterized 3D environment (voxet). This voxet serves as the framework for target generation TSX-V:
Slide 21: Mineral Prospectivity Models (MPI)
MINERAL PROSPECTIVITY MODELS (MPI) • All exploration vectors are represented as values on a 3D model • Targeting is conducted by calculating a mineral prospectivity index (MPI) from the different exploration vectors • The MPI calculation is conducted on two simultaneous fronts: 1. Knowledge driven u
Slide 22: Knowledge Driven MPI
KNOWLEDGE DRIVEN MPI Derived from weighted Boolean method, the Index Overlay uses binary evidential properties as input and allows for weighting factor to be applied to each evidence by the expert 4/10 10/10 If Vx >= 100 -> 1 Weights = 44 Weights =00 6 =6 Weights 6/10 0/13 n Binary property from thr
Slide 23: Data Driven (AI) MPI
DATA DRIVEN (AI) MPI Using known examples of mineralization, a predictive model is constructed. The model also produces interpretable insight. TSX-V: RVG | OTCQX: RVLGF 23
Slide 24: New Exploration Targets Paradigm
NEW EXPLORATION TARGETS PARADIGM TSX-V: RVG | OTCQX: RVLGF 24
Slide 25: New Exploration Targets Paradigm
NEW EXPLORATION TARGETS PARADIGM TSX-V: RVG | OTCQX: RVLGF 25
Slide 26: New Structural Paradigm
NEW STRUCTURAL PARADIGM In order to help with current resource expansion drilling, a detailed structural interpretation was conducted using the potential field data and regional structural observations. Different fault orientation families and relationships can be observed. TSX-V: RVG | OTCQX: RVLGF
Slide 27: New Structural Paradigm
NEW STRUCTURAL PARADIGM The updated interpretation resulted in a schematic understanding of the fault framework and relation to generated targets: 1. NE-trending pre-thrust structures (yellow) 2. NW-trending thrust related faults (blue) 3. NNE-trending shear zone (green) TSX-V: RVG | OTCQX: RVLGF 27
Slide 28: New Structural Paradigm
NEW STRUCTURAL PARADIGM TSX-V: RVG | OTCQX: RVLGF 28
Slide 29: New Structural/Exploration Paradigm
NEW STRUCTURAL/EXPLORATION PARADIGM Au ppm Assay data for Bear-Track The detailed structures at Beartrack were used in combination with the assay data to help identify current mineralization trends and identify controlling structures. 1. The Au ppm assay data was desurveyed into punctual data which
Slide 30: New Structural/Exploration Paradigm
NEW STRUCTURAL/EXPLORATION PARADIGM Smoothed Au ppm Assay data assigned to the Panther Creek Fault surface The detailed model at Beartrack seems to identify 2 major grade trends: 1. Shallow S-dipping trend associated to the intersection of the Panther Creek shear and “old” East dipping structures (y
Slide 31: New Structural/Exploration Paradigm
NEW STRUCTURAL/EXPLORATION PARADIGM Mineralized structures modelled from the assay data at the South Pit From the detailed model, it is interpreted that the mineralization at the South Pit could be controlled by a “flower” structure bounded by the Panther Creek Shear and the main Reverse Structure T
Slide 32: Conclusion
CONCLUSION The work conducted as part of the project enabled Mira to compile all existing exploration data to a single workspace, which allowed for better interpretation and increased understanding of the project area. The inversion of the potential field data and DC- IP data significantly helped in
Slide 33: Thank You for Your Time!
THANK YOU FOR YOUR TIME! TSX-V: RVG | OTCQX: RVLGF 33
Slide 34: Revival Gold Inc.
TSX-V: RVG OTCQX: RVLGF revival-gold.com REVIVAL GOLD INC. MIRA GEOSCIENCE LTD. 145 King St. W., Suite 2870 310 Victoria Ave, Suite 309 Toronto, Ontario Montreal, Quebec M5H 1J8 H3Z 2M9 STEVE PRIESMEYER| VP EXPLORATON JEAN-PHILIPPE PAIEMENT| Director Global Consulting SHAUN O’CONNOR| Consultant info