Rimfire Pacific Mining Limited · ASX:RIM
Rimfire Pacific Mining — NSW Mining & Exploration Conference 2022
25 slides from Rimfire Pacific Mining's conference presentation, Oct 12, 2022
Slide 1: Exploration Presentation – Valley Project
RIMFIRE PACIFIC MINING LTD 12 October 2022 ASX: RIM “Critical Minerals Explorer” Exploration Presentation – Valley For personal use only Project MANAGEMENT Rimfire Pacific Mining (ASX: RIM, “Rimfire” or the “Company”), is pleased David Hutton to announce that Dr Peter Crowhurst, Exploration Manager
Slide 2: New porphyry targets emerge from innovative reprocessing of aeromagnetic data
For personal use only New porphyry targets emerge from innovative reprocessing of aeromagnetic data Peter Crowhurst – Exploration Manager NSW Mining & Exploration Conference 13 October 2022 ASX: RIM rimfire.com.au
Slide 3: Disclaimer & Competent Person Statements
Disclaimer & Competent Person Statements For personal use only Competent Persons Declaration The information in the report to which this statement is attached that relates to Exploration and Resource Results is based on information reviewed and/or compiled by David Hutton who is deemed to be a Compe
Slide 4: Investment Highlights
Investment Highlights For personal use only Enviable tenement holding in world renowned Lachlan Orogen and Broken Hill Districts with demonstrated prospectivity for Critical Minerals and Porphyry Copper / Gold deposits. Key Prospects immediately adjacent to two Federal Government declared “Major Pro
Slide 5: Key Projects - NSW
Key Projects - NSW For personal use only Valley Project (Cu-Au) – 100% RIM Fifield Project (Au-PGEs) – RIM Managed Earn-In with GPR up to 50.1% • Adjacent to Kincora (KCC.ASX) Mordialloc / Trundle Projects • Anomalous copper results at surface • Sorpresa JORC Resource and Transit Gold Prospect • RIM
Slide 6: Proven Discovery Team
Proven Discovery Team For personal use only David Hutton • Executive Director Dr Peter Crowhurst • Geology Manager David has over 30 years of exploration experience, with Peter has over 25 years of exploration experience key expertise in greenfields exploration, project discovery, principally in the
Slide 7: The Valley Copper Gold Project (RIM 100%)
The Valley Copper Gold Project (RIM 100%) For personal use only Key Points ● Copper / Gold Target. ● Recent Drilling confirms the “right” Ordovician bedrock – same type and age as Northparkes system.6 ● Reprocessed geophysical data confirms scale footprint is similar in size to Northparkes.6 ● Award
Slide 8: Target Location
Target Location For personal use only Fifield Yellow outline shows the boundaries of the Sorpresa Rimfire EL’s and the main location of Au-Ag Rimfire operational base in Fifield next to The Valley the Sorpresa Au-Ag deposit which lies Target near the western edge of the Macquarie Arc of the Lachlan
Slide 9: Valley Project
Valley Project 63650000. '6360000N GpAga’- MGA gone 55! {BM Porphyry centres being mined or for possible future development at Northparkes 6345000N 6345000N 500ppm Cu surface geochemistry contours (peak values) from near surface drilling data. Exploration Licence boundary Regional Geological Context
Slide 10: The Valley Target – Executive Summary
The Valley Target – Executive Summary For personal use only Challenge of Exploring Undercover Large mines such as Cadia, Northparkes and Cowal did have some surface expression in terms of a geochemistry footprint however the next generation of large deposits are likely to be blind targets under cove
Slide 11: The Valley Target – Timing of Mineralisation
The Valley Target – Timing of Mineralisation The age of mineralisation is a key element of interest in the Macquarie Arc section of the For personal use only Lachlan Orogen; • Most significant mineralisation in the has been found within the Ordovician units and very little in the Devonian • The samp
Slide 12: Surface Geology
Surface Geology Cookeys Plains Formation For personal use only (Shale, siltstone & fine sands) Kincora/Rare X: EL8222 surrounds Rimfire ground Mordialloc Prospect 2km Quaternary Sediments east of EL boundary Edol’s Conglomerate (Polymictic conglomerate) Raggatt Volcanics (Andesitic lavas & volcanoge
Slide 13: Historical Exploration
Historical Exploration For personal use only ● Soil samples did not yield any Cu values above 240 ppm, however 10 rock samples collected by CRAE yielded >1% Cu with a max ~ 5% Cu. CWG collected 1 sample over 5% Cu. Most were massive limonite or breccia ● Also the Zn values show a broad halo around t
Slide 14: RTP Aeromagnetic Images
RTP Aeromagnetic Images For personal use only ● In 2017 an aeromagnetic survey was conducted over the entire Fifield EL package as part of a former JV with NewGold. ● Several standard magnetic plan images such as TMI, RTP and 1VD were produced from this data and this section covers the Valley projec
Slide 15: 2D IP Inversion Sections
2D IP Inversion Sections For personal use only FI2064 FI2079 ● Reprocessed by Tooronga Geophysics Consultants for Central West Gold NL (CWG) in 2010 from data collected in 1975. FI2065 FI2081 ● Note the 3 drill holes completed by CWG (black lines) did not reach the target zone due to issues with wat
Slide 16: Aeromagnetic Data Reprocessing
Aeromagnetic Data Reprocessing For personal use only The AVSI model is independent of remanent magnetization and hence more accurate then the standard RTP RTP HP 2km NL stretch mv_ASVI HP 2km NL stretch FI2079 FI2081 RTP High Pass filter with 2km wavelength Magnetic Vector Inversion – Analytical Sig
Slide 17: 3D Modelling of Aeromagnetic Data
3D Modelling of Aeromagnetic Data DEM surface 3D isosurfaces viewed For personal use only towards the NE FI2081 ~350m vertical depth to target * Planview of 3D isosurface Raggat Volcanic unit Interpreted interpreted intrusive unit EL8542 Historical Drill Holes *This unit lies in the foreground Isosu
Slide 18: Diamond Drilling Testing Deep Target
Diamond Drilling Testing Deep Target For personal use only •Photo below shows spectacular Ordovician volcaniclastic polymictic conglomerate with strong propylitic epidote altered groundmass and selectively pink hematite dusted monzonite pebbles. This style of alteration is typical of the mineralised
Slide 19: Interpretation and Next Steps
Interpretation and Next Steps For personal use only ● The logging of the deepest part of the diamond hole (FI2079) is interpreted to be part of the highly altered Raggatt Volcanic sequence which is a diagnostic unit commonly observed elsewhere in the Macquarie Arc and can be found proximal to a mine
Slide 20: Drill Targets
Drill Targets For personal use only ● Location of planned deep RC- DDH with the interpreted magnetic ring complex which appear as a cluster of potential pencil porphyries. ● The drill holes will test a series of different features such as FI2079 magnetic lows and highs and boundaries of these zones.
Slide 21: Further detailed structural analysis of magnetic data and surface geochemistry
Further detailed structural analysis of magnetic data and surface geochemistry For personal use only
Slide 22: Detailed 3D structural analysis of aeromagnetic data
Detailed 3D structural analysis of aeromagnetic data For personal use only
Slide 23: Comparison to Cadia and Northparkes Cu-Au Porphyry Deposits
Comparison to Cadia and Northparkes Cu-Au Porphyry Deposits Northparkes For personal use only E27 E22 E48 E26 Reference; Hoschke et al, 2022. AIG Tasmanides Conference
Slide 24: Valley Proximal to Mordialloc Prospect
Valley Proximal to Mordialloc Prospect For personal use only ● Kincora Copper (TSX/ASX) Mordialloc Prospect cross section of drill hole locations, mineralized highlights and stylized geological model The Valley target may have a similar setting with the surface samples reflecting leakage from a typi
Slide 25: For further information, please contact
For personal use only For further information, please contact Greg Keane (CFO / Investor Relations): +61 (0) 497 805 918 Rimfire Pacific Mining rimfire@rimfire.com.au @NIRimfire
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