Stavely Minerals Ltd · ASX:SVY
Stavely Minerals — Technical Presentation (October 2022)
43 slides from Stavely Minerals's technical presentation, Oct 19, 2022
Slide 1: Stavely Project, Victoria: Geological Interpretation and Exploration Implications
Cayley Lode Longitudinal Section Stavely Project, Victoria: Logged Chalcopyrite to Pyrite Ratio Geological Interpretation and NW Alpha breccia bodies SE Exploration Implications +250m LAS 108 7 154 155 159 162 163 173 Cpy/Py ‐250m 13 182 Presentation to the 148 14 151 160 161 Board of Directors for
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, Utah
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: Plan-view of drill-hole intervals exceeding 0.3 wt.% copper
Plan‐view of the simplified geological models for the Cayley Lode (provided by Stavely) showing drill‐hole intervals that exceed 0.3 wt.% copper (3000 ppm Cu). The overlay shows the location of the longitudinal‐section illustrated in the following figures. Cu
Slide 6: Longitudinal section showing CuEq intercepts and Low-Angle Structure
Longitudinal‐section of the Cayley Lode, showing Cu Eq wt.% * meter intercepts, and the approximate trace of the Low‐Angle Structure / LAS (Stavely Minerals, Sept. 2021). The approximate location of this section is indicated in the previous figure. Note the gentle southeasterly plunge inferred by th
Slide 7: Restored longitudinal section by Chris Cairns
Longitudinal‐section of the Cayley Lode, showing Cu Eq wt.% x meter intercepts, and the approximate trace of the Low‐Angle Structure / LAS (Stavely Minerals, Sept. 2021). The section has been restored by Chris Cairns to undo about 500m of apparent offset along the LAS. Cairns infers a moderate north
Slide 8: Longitudinal section: copper model in drill-hole
Longitudinal‐section of the Cayley Lode, showing a model for copper (ppm) in drill‐hole. 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 Structure (LAS) and Alpha breccia zones for reference. The second ove
Slide 9: Cu/Zn
Longitudinal‐section of the Cayley Lode, showing a model for Cu/Zn in drill‐hole. The drill‐hole traces are projected from up to 50m away from the section‐line. Increased values of Cu/Zn are inferred to indicate proximity to the mineralizing heat‐source, which in this case is interpreted to be a cau
Slide 10: Au/Cu
Longitudinal‐section of the Cayley Lode, showing a model for Au/Cu in drill‐hole for 10‐m composites of samples that exceed 100 ppm Cu. 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 Structure (LAS) and Al
Slide 11: Ag/Pb
Longitudinal‐section of the Cayley Lode, showing a model for Ag/Pb in drill‐hole. 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 Structure (LAS) and Alpha breccia zones for reference. The second overlay in
Slide 12: Cu/S
Longitudinal‐section of the Cayley Lode, showing a model for Cu/S in drill‐hole. The drill‐hole traces are projected from up to 50m away from the section‐line. In the absence of sulfate minerals (e.g., anhydrite, gypsum and barite), the Cu‐S ratio is a good approximation for the chalcopyrite‐pyrite
Slide 13: Pyrite (vol. pct)
Longitudinal‐section of the Cayley Lode, showing a model for visually logged pyrite abundance in drill‐hole. 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 Structure (LAS) and Alpha breccia zones for refer
Slide 14: Chalcopyrite (vol. pct)
Longitudinal‐section of the Cayley Lode, showing a model for visually logged chalcopyrite abundance in drill‐hole. 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 Structure (LAS) and Alpha breccia zones fo
Slide 15: Chalcopyrite / Pyrite
Longitudinal‐section of the Cayley Lode, showing the model for visually logged chalcopyrite / pyrite in drill‐hole. 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 Structure (LAS) and Alpha breccia zones fo
Slide 16: Stereonet of chalcopyrite-bearing vein orientations
Lower hemisphere equal‐area net showing the poles to chalcopyrite‐bearing veins measured in drill‐holes from the Cayley Lode project (344 vein measurements from 69 drill‐holes, as classified by M. Agnew). The results show similarities to the vein orientations in the southern part of the Caley Lode (
Slide 17: Drill-core photograph from SMD159 at about 553m
Photograph of drill‐core from SMD159 at about 553m and core box (550.9m to 553.9m) in the hangingwall of the Cayley Lode, showing the replacement of a wedge of serpentinized ultramafic (right) by massive chalcopyrite‐hematite‐magnetite‐quartz‐chlorite (left) with crystals of chromite (‘cr’). The ass
Slide 18: SMD182 10.4m at 4.34% copper, 3.17g/t gold
Cross‐section (looking northwest, from Stavely ASX announcement, 27 April 2022) through the southeastern part of the Cayley Lode showing drill‐hole SMD‐182 and Cu‐Au‐Ag anomalous intervals. The location of drill‐core interval pictured in the next figure is indicated for reference (429 to 433m). Visu
Slide 19: Drill-core photograph in SMD182 from 429.1m to 432.8m
Photograph of drill‐core in SMD182 from 429.1m to 432.8m, showing the footwall of the Cayley Lode (massive chalcopyrite‐pyrite) and contact with microdiorite near 431.5m (see previous slide for location). This interval sits about 60m above (in RL) and 60m east of the drill‐core from SMD159 shown in
Slide 20: SMD173 43m at 2.60% copper, 0.42g/t gold
Cross‐section (looking northwest, from Stavely ASX announcement, 8 March 2022) through the southeastern part of the Cayley Lode showing drill‐hole SMD‐173 and Cu‐Au‐Ag anomalous intervals. The style of veins shown in the photo (inset) indicate textures that are consistent with the upper portions of
Slide 21: Drill-core photograph from SMD173 at 419.55m
Photograph of drill‐core from SMD173 at 419.55m in the footwall of the Cayley Lode (see previous slide for location), showing a breccia assemblage of chalcopyrite‐hematite‐magnetite‐ chlorite‐quartz and minor pyrite within a 4m interval of ultramafic rock hosted by microdiorite in the hangingwall to
Slide 22: Sulfidation States in Log fS2 – Temperature Space
Sulfidation States in Log fS2 – Temperature Space. This slide illustrates the diagnostic sulfide mineral assemblages that define low‐, intermediate‐ high‐ and very high‐sulfidation states (after Einaudi et al., 2003). The next figure provides further details and infers a cooling path for mineralizat
Slide 23: SE Cayley Lode target assemblage
Log f S2 – T diagram, illustrating fluid conditions for porphyry, porphyry‐related base metal vein and epithermal systems as a series of possible cooling paths (Figure 7 from Einaudi et al., 2003). The inferred cooling path inferred for many porphyry systems is shown, leading to the deposition of ea
Slide 24: Plan view: copper in drill-hole and cross-structure
Plan‐view of the simplified geological models for the Cayley Lode area (provided by Stavely) showing copper (ppm) in drill‐hole and a LeapFrog‐generated model for copper in drill‐hole (10‐m composites). The overlays show the location of the Cayley Lode cross‐section and the southeastern target zone
Slide 25: 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 26: 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 27: 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 28: 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 29: 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 overlays show the approximate location of an inferred NE‐striking, steeply SW‐dipping cross‐structure that is recommended for follow‐up exploration (re
Slide 30: QUESTEM Channel 9 EM conductivity
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 31: Plan-view of geological models for the Cayley Lode area
Plan‐view of the simplified geological models for the Cayley Lode area (provided by Stavely) showing copper (ppm) in drill‐hole and a model for copper in drill‐hole (10‐m composites). The overlays indicate the location of the Cayley Lode cross‐section, surface projection of the target zones and NE‐t
Slide 32: Cu/S
Longitudinal‐section through the Cayley Lode district showing geological models (provided by Stavely) and the Cu/S model, based on 10‐m composites in drill‐hole. The drill‐hole traces are projected from up to 200 m away from the section line. The first overlay shows the projection of the quartz dior
Slide 33: Longitudinal section: molybdenum in drill-hole
Longitudinal‐section through the Cayley Lode district showing geological models (provided by Stavely) and molybdenum (ppm, 10‐m composites) in drill‐hole. The drill‐hole data is projected from up to 200 m away from the section line. The overlay shows potential zones of copper resource for drill test
Slide 34: Longitudinal section: molybdenum model
Longitudinal‐section through the Cayley Lode district showing geological models (provided by Stavely) and the molybdenum model, based on 10‐m composites in drill‐hole. The drill‐hole traces are projected from up to 200 m away from the section line. The first overlay shows the projection of the quart
Slide 35: Geology
Simplified regional geology map for the Cayley Lode area (as provided by Stavely Minerals). The general location of the Cayley Lode resource is indicated for reference in the overlay. Cayley Lode Geology
Slide 36: Cu in Auger
Copper in soil auger results shown on simplified regional geology map for the Cayley Lode area. The general location of the Cayley Lode resource is indicated for reference in the overlay. There are several areas that are characterized by anomalous surface copper results, including the existing resou
Slide 37: Magnetics
Regional airborne magnetics total magnetic intensity (TMI) image for the Cayley Lode region (as provided by Stavely Minerals). The general location of the Cayley Lode resource is indicated for reference in the overlay. The final overlay shows a simple hand‐drawn interpretation of magnetic gradients
Slide 38: Cu in Auger / Magnetics
Copper in soil auger results shown on the regional airborne magnetics TMI image for the Cayley Lode area. The general location of the Cayley Lode resource is indicated for reference in the overlay. The second overlay shows a simple hand‐drawn interpretation of magnetic gradients. There are several a
Slide 39: Cu in Auger / Gravity
The 1‐km residual gravity image for the Cayley Lode area, shown with an overlay of copper in soil auger results. The general location of the Cayley Lode resource is indicated for reference. There are several areas that are characterized by anomalous surface copper results, including the existing res
Slide 40: Cu in Auger, Cu/Zn in Auger
Copper and Cu/Zn in soil auger results shown on simplified regional geology map for the Cayley Lode area. The general location of the Cayley Lode resource is indicated for reference in the overlay (black‐yellow outline). There are several areas that are characterized by anomalous surface copper resu
Slide 41: Mo in Auger, Mo/Mn in Auger
Molybdenum and Mo/Mn in soil auger results shown on simplified regional geology map for the Cayley Lode area. The general location of the Cayley Lode resource is indicated for reference in the overlay (black‐yellow outline). There are several areas that are characterized by anomalous surface copper
Slide 42: Cayley Lode Area Geological Interpretation: Summary and Conclusions
Cayley Lode Area Geological Interpretation Summary and Conclusions • Early porphyry systems, northern QDP and Mt Victor, overprinted by high‐sulfidation lodes: Cayley, NS and CLS • Northern QDP cupola characterized by elevated Cu and Cu/Zn; central A‐veins and anhydrite veins; proximal to distal D‐v
Slide 43: Cayley Lode Area - Recommendations
Cayley Lode Area ‐ Recommendations • Expand vein type and abundance logging to include Mt Victor and the southeastern portion of the Cayley Lode • Consider logging veins by volume percent rather than frequency per meter; If this is done, the team will need to convert previous measurements to vol. %
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