European Resources Limited · ASX:ERE
European Resources — Prospech — International Symposium of the Society of Resource Geology 'Gold Exploration in the Circum (October 2021)
23 slides from European Resources's conference presentation, Oct 14, 2021
Slide 1: Miocene Caldera hosted mineralisation in the Western Tethyan in Slovakia
Miocene Caldera hosted mineralisation in the Western Tethyan in Slovakia - Implications for the Pacific Rim. 14th October 2021 The Society of Resource Geology International Symposium of the Society of Resource Geology ‘Gold Exploration in the Circum-Pacific’ J Beckton - Prospech Limited - www.prospe
Slide 2: Concept – Exploration Targets to Resources
Concept – Exploration Targets to Resources Importance of two stage mineralisation Scale Telescoping of later Horst Graben faults Region with ~1,000 year mining history over earlier Detachment Fault Detachment Fault mined at Rozalia for 10gt/Au head grade Operations Low Tech – High Value Derisked Sch
Slide 3: Europe – Western Edge of the Tethyan Metals Belt
Europe – Western Edge of the Tethyan Metals Belt
Slide 4: Exploration in Mining Friendly Central Europe
Exploration in Mining Friendly Central Europe - Gold Silver Tungsten Antimony Projects Prospech holds 100% of all properties with no ongoing commitments to third parties - First mover advantage for a Gold Silver Explorer in a mining friendly jurisdiction
Slide 5: Exploration of Miocene Mineralisation in a Caldera
Exploration of Miocene Mineralisation in a Caldera Prospech is exploring a Caldera scale system containing moderate tonnage high grade gold silver systems
Slide 6: Main Gold Silver Endowment in Hodrusa Caldera
Main Gold Silver Endowment in Hodrusa Caldera
Slide 7: Event 1 – 2017 breakthrough – Detachment Fault – Low Angle Normal Fault (LANF)
Event 1 – 2017 breakthrough – Detachment Fault – Low Angle Normal Fault (LANF) Hodrusa-Hamre Caldera Goldfield Covers large volcanic caldera: Shallow dipping Eastern LANF Au and steep Horst and Graben Ag/Au targets. Different metal ratio of Au:Ag 1:10 compared to later Horst Graben veins of 1:100. R
Slide 8: Event 1 – Mineralised Detachment Fault
Event 1 – Mineralised Detachment Fault Presence of LANF (or detachment fault) has been recently recognized as a result of a structural study inside and around the Rozalia Mine (1.2 Mt @ 10 g/t Au, 14 g/t Ag). The LANF surface expression occurs 90% on Prospech tenure predominately to the West of the
Slide 9: Stages of Evolution of Hodrusa Mined Caldera from 1993
Stages of Evolution of Hodrusa Mined Caldera from 1993 Event 1 - B - Mineralised Detachment Mined Fault from (noted as Shear Zone by Kodera et al) Event 2 - D - 1093? Horst Graben fault hosted veins
Slide 10: Event 1 – Mineralised Detachment Fault – Mined from 1993
Event 1 – Mineralised Detachment Fault – Exhumation of granodiorite and evolution of LANF LANF host target: a potential game changer? Now testing the low angle detachment fault zone, host to the adjacent Rozalia mine feedstock Originally identified in 2006 but overlooked at the time, Comenius Univer
Slide 11: Event 1 – Mineralised Detachment Fault – Modern Mapping
Event 1 – Mineralised Detachment Fault – Modern Mapping LANF (or detachment fault) 2017. New ideas from old areas - 2017 LANF mapping by V. Rastislav and 1950’s historic production in geothermally active Caldera
Slide 12: Event 1 – Mineralised Detachment Fault – IP MT Geophysics 2021 - Current
Event 1 – Mineralised Detachment Fault – IP MT Geophysics 2021 - Current
Slide 13: Event 1 – Detachment Fault Definition by IP and MT currently
Event 1 – Detachment Fault Definition by IP and MT currently Targeting high-grade LANF mining horizon Ground IP for the first time Rozalia Mine sequence target Never previously drilled
Slide 14: Detachment Fault offset by Event 2 – Horst Graben Faults
Event 1 – Detachment Fault offset by; – Event 2 – Horst Graben Faults – also mineralised LANF host target also offset by a second pulse of mineralisation Testing of later offset Horst Graben bounding faults which are also filled with mineralised veins also underway on Caldera scale. Event 1 - Mined
Slide 15: Event 2 – Horst Graben Faults – Schopfer
Event 2 – Horst Graben Faults – Schopfer Horst Graben Fault – old mine Schopfer is able to be drilled underground for the length of the main 2nd level access. Short underground diamond holes (<20m), drilled by in house team, provide BQ core and in this case, returned encouraging results. Up to 9.1 g
Slide 16: Event 2 – Ignac-Rabenstein – High Grade Discovery
Event 2 – Horst Graben Faults – Ignac-Rabenstein – High Grade Discovery – 400m from underground infrastructure Interpreted mineralised mine sequence just above LANF but connected to it – 400m from haulage drive from Rozalia Mine 42 rock chip samples averaged 7.7 g/t Au and 329 g/t Ag (up to 47.0 g/t
Slide 17: Event 2 – Horst Graben Faults – Anton
Event 2 – Horst Graben Faults – Anton Untested Mined Au Ag – High Grade Stope locations known Targets preserved with water flows noted to have stopped production 17 rock chip samples averaged 8.6 g/t Au and 464 g/t Ag (up to 52.6 g/t Au). Currently being drilled for the first time.
Slide 18: Analogies – Where else? – PacRim - Emperor Mine Fiji
Detachment Faults – Event 1 Offset vertical Faults – Event 2 – Horst Graben Faults Analogies – Where else? – PacRim - Emperor Mine Fiji
Slide 19: Analogies – Where else? – PacRim - Emperor Mine Fiji
Detachment Faults – Event 1 Offset vertical Faults – Event 2 – Horst Graben Faults Analogies – Where else? – PacRim - Emperor Mine Fiji Emperor Mine – Fiji – high grade ‘Flat makes’ (detachment faults) offset by lower grade higher tonnage offsets – as per Hodrusa in Slovakia - on the edge of or with
Slide 20: Analogies – Where else? – Tethyan - Ada Tepe Bulgaria
Detachment Faults – Event 1 Offset vertical Fauts – Event 2 – Horst Graben Faults Analogies – Where else? – Tethyan - Ada Tepe Bulgaria Ada Tepe – high grade Flats offset by lower grade higher tonnage offsets. https://www.dundeeprecious.com/English/Op erating-Regions/Current-Operations/Ada- Tepe/Geo
Slide 21: Conclusions
Conclusions ✓ ✓ ✓ Known deposits may have LANF style mineralisation occurs at Map metal ratios of gold and silver unknown structural zones that a remobilized unconformity on to discern possible earlier Caldera are also mineralised each side of a resurgent horst – related events review unconformities
Slide 22: References
References V. Rastislav1 & P. Žitňan 2016 Tectonics of the low-angle normal fault zone and its mineralisation (Štiavnica Stratovolcano) 1Department of Geology and Paleontology, Faculty of Natural Sciences, Comenius University in Bratislava, Mlynská dolina, Ilkovičova 6, 842 15 Bratislava, Slovakia;
Slide 23: Disclaimer and Contact
Disclaimer and Contact Competent Person Statement The information in this Report that relates to exploration targets and exploration results is based on information compiled by Mr Jason Beckton, who is a Member of the Australian Institute of Geoscientists. Mr Beckton, who is Managing Director of the