A NEW LOOK: GEOLOGY OF THE BEARTRACK GOLD PROJECT - American Exploration & Mining Association - Revival ...
←
→
Page content transcription
If your browser does not render page correctly, please read the page content below
TSX-V: RVG revival-gold.com OTCQB: RVLGF A NEW LOOK: GEOLOGY OF THE BEARTRACK GOLD PROJECT American Exploration & Mining Association Spokane, Washington December 6, 2018 TSX-V: RVG | OTCQB: RVLGF 1
Disclaimer This document has been prepared by Revival Gold Inc. (“Revival Gold” or, the “Company”) solely for the use in the presentation being given in connection with the recipient’s evaluation of the Company which is defined and outlined further herein. It is a presentation of information about the Company’s activities as the date of the presentation. It is information in a summary form and does not purport to be complete. It is not intended to be relied upon as advice to investors or potential investors and does not take into account the investment objectives, financial situation or needs of any particular investor. These should be considered, with or without professional advice, when deciding if an investment is appropriate. The information contained in this presentation is derived from estimates made by the Company, information that has been provided to the Company by other parties, and otherwise publicly available information concerning the Company and does not purport to be all-inclusive or to contain all the information that an investor may desire to have in evaluating whether or not to make an investment in the Company. The information has not been independently verified and is subject to material updating, revision and further amendment. No representation or warranty, express or implied, is made or given by or on behalf of the Company or any of its affiliates or subsidiary undertakings or any of the directors, officers or employees of any such entities as to the accuracy, completeness or fairness of the information or opinions contained in this presentation and no responsibility or liability is accepted by any person for such information or opinions. In furnishing this presentation, the Company does not undertake or agree to any obligation to provide the attendees with access to any additional information or to update this presentation or to correct any inaccuracies in, or omissions from, this presentation that may become apparent. No person has been authorized to give any information or make any representations other than those contained in this presentation and, if given and/or made, such information or representations must not be relied upon as having been so authorized. The information and opinions contained in this presentation are provided as at the date of this presentation. The contents of this presentation are not to be construed as legal, financial or tax advice. Each prospective investor should contact his, her or its own legal adviser, independent financial adviser or tax adviser for legal, financial or tax advice. This presentation includes certain "forward-looking statements" which are not comprised of historical facts. Forward-looking statements include estimates and statements that describe the Company’s future plans, objectives or goals, including words to the effect that the Company or management expects a stated condition or result to occur. Forward-looking statements may be identified by such terms as “believes”, “anticipates”, “expects”, “estimates”, “may”, “could”, “would”, “will”, or “plan”. Since forward-looking statements are based on assumptions and address future events and conditions, by their very nature they involve inherent risks and uncertainties. Although these statements are based on information currently available to the Company, the Company provides no assurance that actual results will meet management’s expectations. Risks, uncertainties and other factors involved with forward-looking information could cause actual events, results, performance, prospects and opportunities to differ materially from those expressed or implied by such forward-looking information. Forward looking information in this news release includes, but is not limited to, the Company’s objectives, goals or future plans, statements, exploration results, potential mineralization, the estimation of mineral resources, exploration and mine development plans, timing of the commencement of operations and estimates of market conditions. Factors that could cause actual results to differ materially from such forward- looking information include, but are not limited to failure to identify mineral resources, failure to convert estimated mineral resources to reserves, the inability to complete a feasibility study which recommends a production decision, the preliminary nature of metallurgical test results, delays in obtaining or failures to obtain required governmental, environmental or other project approvals, political risks, uncertainties relating to the availability and costs of financing needed in the future, changes in equity markets, inflation, changes in exchange rates, fluctuations in commodity prices, delays in the development of projects, capital, operating and reclamation costs varying significantly from estimates and the other risks involved in the mineral exploration and development industry, and those risks set out in the Company’s public documents filed on SEDAR. Although the Company believes that the assumptions and factors used in preparing the forward-looking information in this presentation are reasonable, undue reliance should not be placed on such information, which only applies as of the date of this presentation, and no assurance can be given that such events will occur in the disclosed time frames or at all. The Company disclaims any intention or obligation to update or revise any forward-looking information, whether as a result of new information, future events or otherwise, other than as required by law. This presentation does not constitute or form part of any offer or invitation for the sale or purchase of securities or any of the assets, business or undertaking described herein nor shall it or any part of it form the basis of or be relied on in connection with, or act as any inducement to enter into, any contract or commitment whatsoever. Recipients of this presentation who are considering an investment in the Company are reminded that any such purchase or subscription must not be made on the basis of the information contained in this presentation but are referred to the entire body of publicly disclosed information regarding the Company. This presentation is being supplied to you solely for your information and may not be reproduced, further distributed or published in whole or in part by any other person. Distribution of this presentation may be restricted or prohibited by law. Recipients are required to inform themselves of, and comply with, all such restrictions or prohibitions and the Company does not accept liability to any person in relation thereto. Neither this presentation nor any copy of it may be taken or transmitted into the United States of America or distributed directly or indirectly, in the United States of America or to any resident thereof except in compliance with U.S. securities laws. The technical and scientific information in this document was reviewed and approved by Steven T. Priesmeyer, C.P.G., VP, Exploration and a Qualified Person under National Instrument 43-101. TSX-V: RVG | OTCQB: RVLGF 2
Location Lemhi County • Located in east-central Idaho on USFS land 20 kilometers west of BEARTRACK-ARNETT Salmon, population 3,100 • Access from Idaho Falls, ID to the south or Idaho Cobalt Otis Gold-Kilgore Missoula, MT to the north; drive time is Midas Gold-Stibnite approximately three hours in either case LEMHI COUNTY • Drive time from Salmon is approximately one 50 miles 80 kilometres hour Source: Revival Gold TSX-V: RVG | OTCQB: RVLGF 3
Beartrack & Arnett History 1866: Placer gold discovery in Napias Creek; production from drainage basin estimated at 600K oz. Au (Johnson et al, 1998) 1890: First lode claims patented and development work begins 1950s: James Clutis recognized bulk mining potential at Arnett; staked unpatented claims 1970s: Various companies evaluate Arnett (Cyprus, Pegasus, British Petroleum Minerals etc.) 1986: American Gold Resources (AGR) acquires Arnett property 1987: Canyon Resources discovers North orebody at Beartrack 1988: Project acquired by Burlington Northern (Meridian Minerals); discovery of South orebody 1994: Beartrack Mine development initiated; mining initiated in South Pit 2000: Beartrack Open Pit mining ends 2002: Active pad leaching terminated (607,500 oz. Au production) 2012: Meridian initiated 3 year exploration program to evaluate deep potential 2013: Exploration program terminated; 21 holes demonstrate continuity of mineralization at depth 2017: RVG signs agreements for Arnett in June 2017 & Beartrack in August 2017 TSX-V: RVG | OTCQB: RVLGF 5
Beartrack 2018 Resource Tonnes Gold Grade Contained Gold Resource Category1-4 (‘000) (g/t Au) Ounces (‘000) Indicated Heap Leach 5 12,060 0.71 276 Indicated Mill 21,305 1.37 938 Total Indicated 33,365 1.13 1,214 Inferred Heap Leach 5 2,091 0.81 54 Inferred Mill 14,812 1.49 710 Total Inferred 16,903 1.41 765 1. Mineral Resources that are not Mineral Reserves do not have demonstrated economic viability. It is reasonably expected that most of Inferred Mineral Resources could be upgraded to Indicated Mineral Resources with continued exploration. 2. Mineral Resources were tabulated for model blocks with positive net value that lie within an optimized conceptual pit. Economic parameters - US$1,300 Au, Heap Leach Recovery: 85% of cyanide soluble gold, Mill Recovery: 84% of contained gold by fire assay, Mining Cost: US$2.66/tonne, Heap Leach Processing Cost: U$5.00/tonne, Mill & POX Processing Cost US$17.00/tonne, G&A Cost: US$1.75/tonne, Pit Slope Angle: 45 degrees. The price, recovery and cost data translate to a breakeven gold cut-off grade of approximately 0.61 g/t gold and 0.26 g/t cyanide soluble gold for mill and heap leach respectively. 3. Rounding may result in apparent discrepancies between tonnes, grade, and contained metal content. The estimate of mineral resources may be materially affected by geology, environment, permitting, legal, title, taxation, socio-political, marketing other relevant issues. 4. The effective date of the mineral resource estimate is April 18, 2018. 5. Heap Leach material defined by cyanide soluble grade leach characteristics. See Revival Gold Beartrack 43-101 Technical Report dated July 12, 2018 for further details. TSX-V: RVG | OTCQB: RVLGF 6
Geology of Idaho MAJOR GEOLOGIC COMPONENTS • Proterozoic metasedimentary rocks 1470-1390 Ma; • Proterozoic rapakivi granite 1370 Ma • Cordilleran Fold & Thrust Belt 130-60 Ma (Sevier Orogeny) • Idaho Batholith Atlanta lobe: 98-67 Ma Bitterroot Lobe:66-54 Ma • Trans-Challis Fault System Beartrack & (Idaho portion of the Great Falls Tectonic Arnett Zone) Proterozoic to Quaternary • Challis volcanics & related intrusives 51-43 Ma • Basin and Range 17-5 Ma • Snake River Plain 12-4 Ma Source: Idaho Geological Survey TSX-V: RVG | OTCQB: RVLGF 7
Regional Geology Mackinaw District • Proterozoic metasedimentary rocks (greenschist facies) • Big Creek Quartzite • Gunsight Fm. • Swauger Fm. • Yellowjacket Fm. • Proterozoic rapakivi granite • Cambro-Ordovician syenite • Tertiary granite (Bobcat Gulch & Arnett) • Eocene Challis Volcanics & dikes • Quaternary deposits (alluvial gravels & glacial till) • Panther Creek Fault Zone & Coiner Fault Source: Meridian Gold; Evans and Green, 2003; Bookstrom et al, 2016 TSX-V: RVG | OTCQB: RVLGF 8
Beartrack Geologic Characteristics • Primary Commodity: Au; Ag from earlier stage of mineralization • Host Rock: Proterozoic rapakivi granite & Proterozoic metasedimentary rocks; mafic to felsic dikes • Ore Control: NE-trending Panther Creek Fault Zone (PCFZ); NE-dipping low-angle structures; lithology • Style of Mineralization: stockwork, quartz veins & disseminated • Sulfide Mineralogy: pyrite & arsenopyrite • Gangue Mineralogy: quartz, sericite ± Fe-carbonate • Alteration: sericitic, silicification ± Fe-carbonate, potassic • Sericitic alteration of primary/metamorphic biotite and feldspar • Silicification in breccia zones adjacent to the PCFZ • Sparse Fe-carbonate in veinlets and disseminated in wallrock • Secondary K-feldspar; relationship with Au mineralization unknown • Geochemistry: As with moderately anomalous W & weakly anomalous Mo; • local Cu, Pb, Zn, Ag & local Sb, Hg related to older & younger events respectively • No discernable vertical or horizontal zonation • Age of Mineralization: 65-69 Ma (Ar40/Ar39 from sericite & microcline) TSX-V: RVG | OTCQB: RVLGF 9
Beartrack Geology & Mineralization • Mineralization controlled by the PCFZ • Proterozoic metasedimentary rocks west of the PCFZ and Proterozoic rapakivi granite east of the PCFZ • Five known deposits over five kilometers of the PCFZ: • North • Mason-Dixon • South • Moose Creek-Allen Creek • Joss • North Pit mineralization primarily hosted by Proterozoic rapakivi granite • South Pit mineralization primarily hosted by Proterozoic metasedimentary rocks TSX-V: RVG | OTCQB: RVLGF 10
Beartrack Panther Creek Fault Zone • The PCFZ is the primary structural control on the Beartrack gold mineralization as well as several other gold prospects in the region • Mapped for over five kilometers on the property and traced for over 70 kilometers regionally • Strikes 025o – 030o; dips vary from 75o SE to 48o NW • Varies in width from a few meters to 60 meters or more • At Beartrack the PCFZ occurs at, or near, the contact between the Proterozoic rapakivi granite & metasedimentary rocks • Exhibits a long history of activity ranging from early ductile (foliated rock) deformation to late brittle deformation (breccia and gouge zones): • Mylonitic foliation of Proterozoic rapakivi granite & metasedimentary rocks • Intrusion of dikes of various compositions and ages • Mylonitic foliation of some mafic dikes • Gouge & breccia zones • Right-lateral strike slip movement TSX-V: RVG | OTCQB: RVLGF 11
Beartrack Rapakivi Granite - Mylonite Fresh, undeformed Altered & mylonitized Proterozoic rapakivi granite Proterozoic rapakivi granite TSX-V: RVG | OTCQB: RVLGF 12
Beartrack Post-Mineralization Fault Breccia TSX-V: RVG | OTCQB: RVLGF 13
Beartrack Stages of Mineralization Three stages of mineralization have been recognized: • Stage I - quartz-plagioclase-biotite-magnetite-barite veins are pre-Au mineralization; coeval with leucogranite dikes • Stage IIA - sheeted NE-trending quartz-pyrite±galena±sphalerite±chalcopyrite veins; formed during NW-SE extension • Associated elements: Cu-Pb-Zn-Ag-Cd-Fe • Stage IIB - bull quartz + coarse-grained pyrite veins in shoots formed in dextral jogs along the PCFZ; no known associated Au mineralization • Stage IIC - fine-grained, dark gray quartz+arsenopyrite+pyrite veins. Main stage Au mineralization. • Associated elements: As-Fe-Au±W-Mo • Stage III – epithermal quartz+pyrite+galena veins that cross-cut the PCFZ; age unknown but possibly related to the Challis Volcanics • Associated elements: Hg-Sb-Ba TSX-V: RVG | OTCQB: RVLGF 14
Beartrack Stage II Mineralization Stage IIA – Quartz- pyrite±galena±chalcopyrite veinlets Stage IIB – Bull quartz with coarse- grained pyrite Stage IIC – Quartz-arsenopyrite- pyrite veinlets TSX-V: RVG | OTCQB: RVLGF 15
Beartrack Stage IIC Mineralization Quartz-arsenopyrite-pyrite stockwork in Quartz-arsenopyrite-pyrite stockwork in Proterozoic rapakivi granite Proterozoic metasedimentary rocks TSX-V: RVG | OTCQB: RVLGF 16
Beartrack Mineralized Over 600 Meters Vertically 96-663 36.6 m @ 2.54 g/t Au DD-002 70.4 m @ 1.84 g/t Au DD-097 44.2 m @ 2.86 g/t Au 29.0 m @ 1.95 g/t Au 195.7 m @ 2.33 g/t Au 600 m BT18-209D 69.5 m @ 1.89 g/t Au BT12-179AD 32.3 m @ 2.36 g/t Au Incl. 2.7 m @ 8.53 g/t Au OPEN AT DEPTH Source: Revival Gold TSX-V: RVG | OTCQB: RVLGF 17
Beartrack Longitudinal Section OPEN TO 4,000 m SOUTH Source: Revival Gold TSX-V: RVG | OTCQB: RVLGF 18
Beartrack Controls on Mineralization • Structural: Primary control is the PCFZ • Lithologic: Mineralization is preferentially hosted by quartzite rather than micaceous metasediments, and by granite where quartzite is not in contact with PCFZ • There are two controls on the plunge and distribution of high-grade mineralization: • Intersection of NE-dipping faults with the PCFZ; plunge is shallow and to the NE • Intersection of bedding with the PCFZ; plunge is moderate to the SW TSX-V: RVG | OTCQB: RVLGF 19
Beartrack Controls on Mineralization Panther Creek Fault Zone Source: Revival Gold TSX-V: RVG | OTCQB: RVLGF 20
Beartrack NE-Dipping Structures 15 m Source: Revival Gold TSX-V: RVG | OTCQB: RVLGF 21
Beartrack NE-Dipping Structures 15 m Source: Revival Gold TSX-V: RVG | OTCQB: RVLGF 22
Beartrack Summary of Geologic Characteristics BEARTRACK SUMMARY • Sulfide mineralogy: pyrite & arsenopyrite • Gangue mineralogy: quartz, sericite ± Fe-carbonate • Geochemistry: As, W & Mo • local Cu, Pb, Zn & Ag and local Sb & Hg related to older & younger events • Alteration: sericitic, silicification, ± Fe-carbonate, potassic • Ore controls: structure (PCFZ, NE-dipping faults) & lithology • Host rock: Proterozoic metasedimentary and intrusive rocks • Sulfide content: 1-3% • No vertical zonation over more than 600 m & continuity at depth • Association with trans-crustal fault system • Age of Mineralization: 65-69 Ma (Ar40/Ar39 from sericite & microcline) TSX-V: RVG | OTCQB: RVLGF 23
Orogenic Au Comparison OROGENIC Au BEARTRACK • Temperature: 200oC-700oC • Fluids: unclear but reported to be in the range for orogenic Au deposits • Fluids: 3-15 eq. wt% NaCl & ≥5 mol% CO2 • Ore mineralogy: pyrite, arsenopyrite • Ore mineralogy: pyrite, arsenopyrite, galena, sphalerite • Gangue mineralogy: quartz, sericite • Geochemistry: Fe, As, Au ± W, Mo • Gangue mineralogy: quartz, carbonate, chlorite, sericite • Alteration: sericite, silicic, ± Fe-carbonate, potassic • Geochemistry: Au, Ag, As, Sb, K, W, Te & Mo • Hosted by Proterozoic metasedimentary • Alteration: carbonate, sericite and intrusive rocks • Occurs in deformed metamorphic terrane • Sulfide content 1-3% • Spatially associated with a trans-crustal • Sulfide content ≤ 3-5% fault zone; granitic magmatism (?) • Spatially associated with both a trans- crustal fault zone & granitic magmatism TSX-V: RVG | OTCQB: RVLGF 24
Regional Geology Geochronology IGNEOUS EVENTS MINERALIZING EVENTS • Proterozoic rapakivi granite 1370 Ma • Idaho Cobalt Belt ~1370 Ma • Cambro-Ordovician syenite 486 Ma • Arnett Creek – Au3 80 Ma • Idaho Batholith • ARN Mo target3 77 Ma Atlanta lobe1 98-67 Ma • Elk City – Au4 71 Ma Bitterroot lobe1 66-54 Ma • Beartrack – Au3 68 Ma • Eocene granite/granodiorite2 49 Ma • Ditch Creek – Au3 66 Ma • Challis volcanics, plutons & 51-43 Ma • Bobcat Gulch porphyry Cu-Mo 49 Ma dikes1 • Challis-related epithermal Au- 45-43 Ma Ag4 3 Unpublished data 1 Gaschnig R. M. et al, 2011, Isotopic Evolution of the Idaho Batholith and Challis Intrusive Province, Northern US Cordillera: Journal of Petrology, 4 Lund, K., Snee, L.W. and Evans, K.V., 1986, Age and Genesis of Precious v. 52, p2397-2429. Metal Deposits, Buffalo Hump District, Central Idaho: Implications for Depth of Emplacement of Quartz Veins; Econ. Geol, v. 81, p. 990-996. 2 Bennett, E.H. and Knowles, C.R.,1983,Tertiary Plutons and Related Rocks in Central Idaho: USGS Bulletin-F, F81-F98. 5 Fisher, F.S., 1983, Summary of the Geology, Mineral Deposits, and Resource Potential for Selected Commodities in the Challis Quadrangle: USGS Bulletin 1658-A, A1-A27. TSX-V: RVG | OTCQB: RVLGF 25
District Geology Geochronology 49 Ma 77 Ma 80 Ma 68 Ma Source: Meridian Gold; Evans and Green, 2003; Bookstrom et al, 2016 TSX-V: RVG | OTCQB: RVLGF 26
Beartrack Intrusives Interpreted from Airborne Magnetics Bobcat Gulch porphyry Possible Buried Intrusives Possible Buried Intrusives Beartrack mine Arnett syenite TSX-V: RVG | OTCQB: RVLGF 27
Beartrack RVG Geochronology Sampling Quartz-plagioclase-biotite- Chloritized mafic dike magnetite-barite vein Altered quartz-eye rhyolite dike TSX-V: RVG | OTCQB: RVLGF 28
Beartrack Contributors • Authors: o Steve Priesmeyer o Tony Norman o Larry Hillesland o Pete Blakely • Thanks to: o Mark Hawksworth and all the geologists past and present that contributed to the project TSX-V: RVG | OTCQB: RVLGF 29
Beartrack Thank You! TSX-V: RVG | OTCQB: RVLGF 30
TSX-V: RVG revival-gold.com OTCQB: RVLGF REVIVAL GOLD INC. 145 King St. W., Suite 2870 Toronto, Ontario M5H 1J8 STEVE PRIESMEYER | VP Exploration ANDREA TOTINO | IR Manager info@revival-gold.com 416-366-4100 TSX-V: RVG | OTCQB: RVLGF 31
You can also read