Stavely Minerals Ltd · ASX:SVY
Stavely Minerals — Technical Presentation (July 2023)
44 slides from Stavely Minerals's technical presentation, Jul 10, 2023
Slide 1: Stavely Project, Victoria: Geological Interpretation and Exploration Implications
Drysdale – Cayley Lode Area Copper-Zinc Ratio in Drill-Hole Stavely Project, Victoria: Geological Interpretation and Exploration Implications 183 182 West SMD114 114 Target 046 117 185 187 VSTD3 Mt Victor 184 071 Porphyry 186 Presentation to Drysdale Stavely Minerals Ltd VIC1D3 Target by Steve Garwi
Slide 2: Vertical geochemical dispersion model in porphyry Cu-(Mo-Au) systems
Vertical geochemical dispersion model in porphyry Cu-(Mo-Au) systems as summarized by the MDRU-study, using the Yerington porphyry deposit in Nevada as an example (Cohen, 2011 and Halley et al., 2015). In this model, the top of the causal intrusion is located about three kilometers below the paleo-s
Slide 3: Zoning of polymetallic replacement deposits, Main Tintic
Zoning of polymetallic replacement, “manto-like” deposits – plan view of Main Tintic, Utah, USA (after Morris, 1968). Note that the steeply-dipping, Pb-Zn-replacement bodies within limestone extend up to 4000 m from the margin of the mid-Tertiary causal monzonite stock. The district metal zoning con
Slide 4: Cayley Lode area – Stavely project, western Victoria
Generalized geological maps and vertical profiles trough selected global porphyry systems (Seedorff et al., 2005), showing the hydrothermal alteration plan-map of the Cayley Lode – Mt Victor area in the Stavely project, western Victoria. The Cayley – Mt Victor foot-print is large and comparable to t
Slide 5: Cayley Lode introduction
Cayley Lode introduction from Cairns et al. (2022) and Stavely Minerals Limited website (https://www.stavely.com.au/stavely-project) The Cayley Lode copper-gold-silver lode-style mineralisation was discovered in September 2019 at the Thursday’s Gossan porphyry prospect, located in Western Victoria,
Slide 6: Alteration
Plan-view of the near-surface interpretive hydrothermal alteration zones (left-hand image) and simplified geological models (provided by Stavely; right-hand image) for the Cayley Lode area. The overlays show the approximate location of an inferred NE-striking, steeply SW-dipping cross-structure that
Slide 7: Simplified geological models and interpretive regional geology
Plan-view of the simplified geological models (provided by Stavely; left-hand image) and interpretive regional geology (right-hand image) for the Cayley Lode area. The overlays show the approximate location of an inferred NE-striking, steeply SW-dipping cross-structure that is recommended for follow
Slide 8: Magnetics
Plan-view of the simplified geological models (provided by Stavely; left-hand image) and first-vertical derivative (1VD) of the total magnetic intensity (right-hand image) for the Cayley Lode area. The overlays show the approximate location of an inferred NE-striking, steeply SW-dipping cross-struct
Slide 9: Gravity
Plan-view of the simplified geological models (provided by Stavely; left-hand image) and 1-km residual gravity (right-hand image) for the Cayley Lode area. The overlays show the approximate location of an inferred NE-striking, steeply SW-dipping cross-structure that is recommended for follow-up expl
Slide 10: Alteration Cu/Zn
Plan-view of the near-surface interpretive hydrothermal alteration zones (left-hand image) and simplified geological models and the Cu/Zn in drill-hole model (right-hand image) for the Cayley Lode area. The overlays show the approximate location of an inferred NE-striking, steeply SW-dipping cross-s
Slide 11: Auger Cu/Zn
Plan-view of the simplified geological models and the Cu/Zn in surface auger samples (individual samples and contours) for the Cayley Lode area. The range of the Cu/Zn values are indicated by the colors in the legend and the size of the data points correspond to the Cu values. The overlays show the
Slide 12: Channel 9 QUESTEM image
QUESTEM image for the Cayley Lode area provided by C. Cairns on 12 October 2022, showing EM conductivity results (blue = low; red = high) and structural interpretation. The rhomboidal prism, based on the geometry of NW- and N-trending mineralized structures (cf. previous slides), is conductive and i
Slide 13: Alteration zones and interpreted geology, Drysdale area
Plan-view of the near-surface interpretive hydrothermal alteration zones (left-hand image) and interpreted geology projected to near-surface (provided by Stavely; right-hand image) for the Cayley Lode – Drysdale area. The Drysdale target sits near the intersection of the north-south structure and th
Slide 14: Aerial photograph showing recommended diamond drill-holes
Aerial photograph of the Cayley Lode area, Stavely Project, showing the recommended diamond drill-holes to test for porphyry Cu-Au mineralization at depth along the western margin of the Mount Victor quartz diorite porphyry body, about 1000m west of the Cayley Lode. The traces of the existing drill-
Slide 15: Drill-hole traces and geological models, Drysdale area
Plan-view of drill-holes (traces) and the geological models created by Stavely Minerals (left-hand image) and interpreted geology projected to near-surface and chalcocite blanket (right-hand image) for the Cayley Lode – Drysdale area. The location of recently completed drill-holes and other holes of
Slide 16: Cu-Zn ratio and chalcopyrite-pyrite ratios in drill-hole
Plan-view of drill-holes (traces), geological models created by Stavely Minerals and 3D models of the Cu-Zn ratio in drill-hole (left-hand image) and visually logged chalcopyrite-pyrite ratios in drill-hole (right- hand image) for the Cayley Lode – Drysdale area. The location of recently completed d
Slide 17: Logged chalcopyrite and chalcopyrite-pyrite ratio in drill-hole
Plan-view of drill-holes (traces), geological models created by Stavely Minerals and logged chalcopyrite (left-hand image) and chalcopyrite-pyrite ratio (right-hand image) in drill-hole for the Cayley Lode – Drysdale area. The location of recently completed drill-holes and other holes of interest ar
Slide 18: Cu/Zn in drill-hole model and surface auger samples
Plan-view of the simplified geological models, the Cu/Zn in drill-hole model and Cu/Zn in surface auger samples for the Cayley Lode – Drysdale area. The Cu/Zn values are indicated by the colors in the legend and the size of the data points. The left-hand image shows all auger results; the right-hand
Slide 19: Cu/Zn contours for all data versus Stavely data only
Plan-view of the simplified geological models, the Cu/Zn in drill-hole model and Cu/Zn in surface auger samples collected by Stavely Minerals for the Cayley Lode – Drysdale area. The Cu/Zn values are indicated by the colors in the legend and the size of the data points. The left-hand image shows the
Slide 20: Drill-holes on detailed magnetics base-maps
Plan-view of drill-holes (traces) and geological models created by Stavely Minerals shown on base-maps of detailed magnetics as processed by Fathom Geophysics (Buckingham, Nov. 2022). The left-hand image shows the vertical-derivative of the reduced-to-the-pole magnetics (total magnetic intensity; fi
Slide 21: Drill-holes on gravity base-maps
Plan-view of drill-holes (traces) and geological models created by Stavely Minerals shown on base-maps of gravity as processed by Fathom Geophysics (Buckingham, Nov. 2022). The left-hand image shows the Bouguer gravity image (file name: SVY_AGG_Gzz_heq) and vectorized gradients (white lines). The ri
Slide 22: Cu/Zn with magnetics and gravity gradients
Plan-view of drill-holes (traces), geological models created by Stavely Minerals and Cu/Zn in drill-hole model shown on base-maps of detailed magnetics and gravity as processed by Fathom Geophysics (Buckingham, Nov. 2022). The left-hand image shows the gravity gradients and the right-hand image show
Slide 23: Cross-section of Drysdale target and proposed drill-hole
Cross-section showing the Drysdale target and proposed diamond drill-hole, the geological models of Stavely Minerals Ltd and a model of Cu/Zn (looking N20W, with drill-traces projected up to 100m away from the section-line). The Drysdale target sits beneath a small hill of quartz-sericite-altered bo
Slide 24: Drysdale cross-section with chalcopyrite-pyrite ratios
Cross-section showing the Drysdale target and proposed diamond drill-hole, the geological models of Stavely Minerals Ltd and a model of Cu/Zn (looking N20W, with drill-traces projected up to 100m away from the section-line). The chalcopyrite-pyrite ratios as logged by Stavely geologists are indicate
Slide 25: Cross-section of West SMD114 target
Cross-section (looking N20W), showing the West SMD114 target, a proposed diamond drill-hole and the geological models of Stavely Minerals Ltd with drill-traces projected up to 200m away from the section-line. The target sits beneath the Low-angle structure (LAS), to the west of the Mt Victor porphyr
Slide 26: West SMD114 cross-section with Cu/Zn
Cross-section (looking N20W) showing the West SMD114 target, a proposed diamond drill-hole, Cu/Zn in drill-hole and a Cu/Zn model with drill-traces projected up to 200m away from the section-line. The target sits beneath the Low-angle structure (LAS), to the west of the Mt Victor porphyry and betwee
Slide 27: West SMD114 cross-section with chalcopyrite/pyrite
Cross-section (looking N20W) showing the West SMD114 target, a proposed diamond drill-hole, the Cu/Zn model and logged chalcopyrite/pyrite in drill-holes, with drill-traces projected up to 200m away from the section-line. The target sits beneath the Low-angle structure (LAS), to the west of the Mt V
Slide 28: West SMD114 target: drill-core photographs from SMD46
466m West SMD114 target: drill-core photographs from SMD46 (from Stavely Minerals): 467m 3m @ 0.6% Cu from 467m, associated with broken core of sericite-clay (phyllic) alteration and quartz-pyrite-chalcopyrite veins (in sandstone) 468m 0.9m @ 0.3% Cu from bottom of hole (636-636.9m), associated with
Slide 29: West SMD114 target: drill-core photographs from SMD114
836m West SMD114 target: drill-core photographs from SMD114 (from Stavely Minerals): 837m 12m @ 1.43% Cu, 0.23 g/t Au and 7.4 g/t Ag from 830m, including 838m 1m @ 8.5% Cu from 840m Chalcopyrite >> pyrite vein @ ~840-841m 839m The quartz-chalcopyrite-pyrite veins are characterized by selvedges of st
Slide 30: Chalcopyrite / Pyrite longitudinal section
Longitudinal-section of the Cayley Lode, showing the model for visually logged chalcopyrite / pyrite in drill-hole (from Garwin, October 2022 report). The drill-hole traces are projected from up to 50m away from the section-line. The first overlay shows the approximate trace of the Low-Angle Structu
Slide 31: Longitudinal section with Cu-Zn ratio
Longitudinal-section of the Cayley Lode, showing the model for visually logged chalcopyrite / pyrite in drill-hole and the Cu-Zn ratio for those holes that have been assayed. The drill-hole traces are projected from up to 100m away from the section-line. Note that the majority of drill-core from hol
Slide 32: Longitudinal section including SMD183 to 187
Longitudinal-section of the Cayley Lode, showing the visually logged chalcopyrite / pyrite in drill-hole and the model created in LeapFrog from this data, including SMD183 to 187. The drill- hole traces are projected from up to 100m away from the section-line. The recent round of drilling has adequa
Slide 33: Longitudinal section of drill-holes and chalcopyrite/pyrite model
Longitudinal-section of the Cayley Lode, showing drill-holes and the model for the visually logged chalcopyrite / pyrite in drill-hole. The drill-hole traces are projected from up to 100m away from the section-line. The recent round of drilling has adequately tested the southeasterly plunge to the o
Slide 34: Geology
Simplified regional geology map for the Stavely region (as provided by Stavely Minerals). The locations of the Cayley Lode resource and S41 area are indicated in the overlay. S41 Cayley Lode Geology
Slide 35: Air-core results for the S41 area
Summary of air-core results for the S41 area shown on a base- map of Bouguer gravity (600m residual) provided by Stavely Minerals.
Slide 36: S41 air-core hole locations and sulfur abundance
S41 air-core drill hole locations shown on the gravity (600 m residual) image with the location of diamond hole STDD001 indicated (left-hand image). The right-hand image shows the abundance of sulfur (in weight-percent) in the air-core holes (after Halley, June 2023). The abundance of sulfur is sign
Slide 37: Cross-section showing STDD001 and core photograph
Cross-section showing STDD001 (looking N30oW, from recent Stavely release) and photograph of core-interval (approximately 394 to 404m downhole, labelled with Mn concentration in ppm) that is characterized by sericite-kaolinite+chlorite-altered, polymictic andesite volcanic breccia, which is cut by l
Slide 38: Trace-element results for air-core holes
Summary of trace-element results for air-core holes (from Halley, June 2023) showing the location of STDD001. This diamond hole was drilled under the best air-core Au-Ag result (STAC0115; 4m at 2.2 g/t Au and 6.9 g/t Ag from 96m, previous slide), however, only tested the northern portion of the hydr
Slide 39: Illite crystallinity > 1
Summary of illite crystallinity in ASD drill-hole results, composited to 20m down-hole and viewed looking down from 200m above sea-level, shown on magnetics as processed by Fathom Geophysics (Buckingham, 2022; file name = SVY_Reg_TMI_RTP_res100_400_heq_NE). The brown lines indicate gravity gradients
Slide 40: Pb/Zn in drill-hole with Au contours
Summary of the Pb-Zn ratio in drill-hole results, viewed looking down from 200m above sea-level, shown on magnetics as processed by Fathom Geophysics (Buckingham, 2022; file name = SVY_Reg_TMI_RTP_res100_400_heq_NE). The brown lines indicate gravity gradients (file name = SVY_AGG_Gz_res0_800_Struct1
Slide 41: Au/Ag and Pb/Zn cross-section through STDD001
Schematic cross-section (looking N30oW) through STDD001 and STAC0115 in the S41 project, showing simplified geology, Au, Ag, Pb and Zn assays (from recent Stavely news release) and Au/Ag and Pb/Zn results in drill-hole. In intermediate-sulfidation systems, increasing values of Au/Ag and Pb/Zn typica
Slide 42: Summary and Conclusions
Stavely Project Geological Interpretation Summary and Conclusions • Metal- and mineral-zoning in Cayley Lode provides a vector towards a Cu-Au-Ag-rich core in the SE part of the lode, which has been drill-tested • The ratio of visually logged chalcopyrite to pyrite in drill-core provides the best ve
Slide 43: Stavely Project - Recommendations
Stavely Project - Recommendations • Drill-test high-potential porphyry targets at Drysdale (1st priority) and West SMD114 (2nd priority) • Consider westerly-inclined holes (60 to 70 degrees towards N70oE to depths ranging from 800 to 1100m) to test for the potential of a Cu-(Au) porphyry system that
Slide 44: Reference Citations
Reference Citations Buckingham, A., 2022, Filtering of magnetic and gravity data, Stavely project, Victoria, unpublished report for Stavely Minerals Ltd, November 2022, 26 p. Cairns, C., Murphy, J., Forgan, H., Johnson, S., Agnew M., and Heard, S., 2022, The Cayley Lode – a ’Magma’ style copper lode
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