ASX | 2 June 2022 |
Announcement |
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Very large scale copper system emerging at Bottletree with latest assays returning an impressive 632m of copper mineralisation in distal part of interpreted porphyry system
Re-modelling of MIMDAS IP highlights 1km-wide zone of potential porphyry
mineralisation immediately west of third hole
HIGHLIGHTS:
use | • Assays confirm extensive strong copper mineralisation in BTDD004 with significant zones of |
high grade copper from distal part of interpreted porphyry system. Copper mineralised over | |
almost entire length of 658.9m hole: | |
Overall Copper intersection: | |
• 632m @ 0.21% Cu, 0.03g/t Au, 0.60ppm Ag, 18.0ppm Mo from 5m below surface | |
personal | Significant porphyry-style mineralisation: |
• 224m @ 0.40% Cu, 0.05g/t Au, 0.90ppm Ag, 3.5ppm Mo from 242m, including: | |
o 2m @ 1.01% Cu, 0.24g/t Au, 2.7ppm Ag, 9.5ppm Mo from 337m | |
o 103m @ 0.53% Cu, 0.05g/t Au, 1.4ppm Ag, 3.3ppm Mo from 363m | |
o 1m @ 5.25% Cu, 0.31g/t Au, 10.7g/t Ag, 1.5ppm Mo from 363m | |
o 12m @ 1.01% Cu, 0.07g/t Au, 2.2ppm Ag, 1.9ppm Mo from 363m | |
o 15m @ 1.19% Cu, 0.15g/t Au, 3.6ppm Ag, 1.9ppm Mo from 451m | |
o 3m @ 1.12% Cu, 0.14g/t Au, 4.8ppm Ag, 2.1ppm Mo from 631m | |
• Strongly mineralised interval in BTDD004 located at outer eastern part (Zone F) of the | |
regional scale 1.5km x 1km soil copper anomaly that defines the Bottletree Prospect | |
• Re-modelling of MIMDAS IP geophysical data highlights a 1 km-wide zone (Zone A) | |
immediately west of 2021 drilling at moderate depth, interpreted as potential mineralisation | |
For | associated with the core or cores of one or more buried porphyry intrusions |
• New and potentially very large IP chargeability target also highlighted by re-modelled IP, | |
located 700m to the southeast of BTDD004 and is coincident with a high priority soil | |
geochemistry target (Zone B) that is potentially a porphyry target | |
• A total of 6 high priority targets identified by interpretation of re-modelled geophysics and | |
multi-element soil data | |
• Multi-stage deep drilling program targeting potential porphyry core west of 2021 drilling and | |
existing near-surface copper mineralisation on schedule to commence late next week |
Superior Resources Limited (ASX:SPQ) (Superior, the Company) announced today strong assay results from the third deep diamond hole (BTDD004) completed during 2021 at its Bottletree Copper Prospect, located within the Company's 100%-owned Greenvale Project, 210kms west of Townsville, Queensland (Figure 1).
onlyuse
personalFigure 1. Map showing the locations of the Greenvale Project tenements and select prospects. The Bottletree Prospect, Gregory Highway, Kidston Clean Energy Hub and associated power corridor infrastructure are also indicated.
BTDD003 and BTDD004 results
PORPHYRY-STYLE COPPER MINERALISATION INTERSECTED
BTDD004 returned a very large interval of vein and disseminated copper mineralisation from 5m below surface: 632m @ 0.22% Cu, 0.03g/t Au, 0.6g/t Ag and 18.0ppm Mo; including a significant interval of strong mineralisation: 224m @ 0.40% Cu, 0.05g/t Au, 0.9ppm Ag and 3.5ppm Mo from 242m (Table 1). The highest grade interval returned 5.25% Cu, 0.31g/t Au and 10.7g/t Ag from 363m to 364m.
As a result of observations on the mineralisation intersected in BTDD001, BTDD004 was designed as a scissor hole to test the western side of the intense MIMDAS IP chargeability anomaly for significant porphyry-style
Forcopper mineralisation.
The assay results confirm that BTDD004 intersected substantial intervals of copper sulphide (chalcopyrite) mineralised vein sets, as well as disseminated copper mineralisation over almost the entire length of the 658.9m hole (Figure 2).
Importantly, veins of quartz-chalcopyrite-molybdenite which resemble Type-B veins in a porphyry system were identified in drill core. Porphyry Type-B veins are a classic indication of a nearby porphyry system. Relatively high molybdenum values dominate the upper parts of BTDD004 where there is an observed association with dacite porphyry intrusions and folded Type-B veins. Alteration assemblages of silica-sericite,K-feldspar and actinolite affecting the dacite porphyries are considered to represent a high temperature alteration phase, either related to the dacites or to a later buried porphyry located further to the west.
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The dacite porphyries have intruded the andesitic volcanic wall rock and both exhibit varying degrees of strong fracturing and local breccia to crackle brecciation.
Sheeted sericite-pyrite-chalcopyrite and sericite-pyrrhotite veins and some stockwork veins are developed lower onlyin the hole. Structural orientations of the stockwork veins are variable, but general populations show dips to the northeast to north and southeast to southwest, likely indicating at least two porphyry systems to be the
source of the veins.
The more intensely mineralised sheeted vein sets are predominantly developed within the andesitic wall rocks and exhibit relatively lower amounts of molybdenum that sharply contrasts with the higher molybdenum in the dacite porphyry-intruded zones.
The extensive mineralisation intersected in BTDD004 is significant and adds to significant copper mineralisation intersected in earlier-reported holes:
use | • BTDD001: 552.6m @ 0.16% Cu, 0.02g/t Au, 0.7g/t Ag from 132m to the end of hole at 684.6m2; and | |
346.7m)3. | 292m @ 0.22% Cu (148.0m to 440.0m), including 18.7m @ 1.12% Cu (328.0m to | |
• | SBTRD006 (2018): |
BTDD003 intersected a similar suite of andesitic volcanics with more abundant tonalite. Significantly, dacite
porphyry intrusions were not encountered. Only minor amounts of copper mineralisation were returned | |||||||||||||||||||||||||||
generally throughout the hole, with better grades observed at the lower parts of the hole. BTDD003, being | |||||||||||||||||||||||||||
personal | incl | 451 | 466 | 15 | 1.19 | 0.15 | 3.6 | 1.9 | |||||||||||||||||||
located further to the east, is considered to be outside the zone of porphyry-related mineralisation (Figures 2 to | |||||||||||||||||||||||||||
4). | |||||||||||||||||||||||||||
Table 1. Summary Cu, Au, Ag and Mo geochemistry for holes BTDD003 and BTDD004 | |||||||||||||||||||||||||||
Hole ID | From | To | Interval | Cu | Au | Ag | Mo | ||||||||||||||||||||
(m) | (m) | (m) | (%) | (g/t) | (g/t) | (ppm) | |||||||||||||||||||||
5 | 637 | 632 | 0.21 | 0.03 | 0.6 | 18.0 | |||||||||||||||||||||
incl | 242 | 466 | 224 | 0.40 | 0.05 | 0.9 | 3.5 | ||||||||||||||||||||
incl | 337 | 339 | 2 | 1.01 | 0.24 | 2.7 | 9.5 | ||||||||||||||||||||
BTDD004 | incl | 363 | 466 | 103 | 0.53 | 0.05 | 1.4 | 3.3 | |||||||||||||||||||
incl | 363 | 375 | 12 | 1.01 | 0.07 | 2.2 | 1.9 | ||||||||||||||||||||
363 | 364 | 1 | 5.25 | 0.31 | 10.7 | 1.5 | |||||||||||||||||||||
For | incl | 631 | 634 | 3 | 1.12 | 0.14 | 4.8 | 2.1 | |||||||||||||||||||
290 | 293 | 3 | 0.23 | 0.04 | 1.2 | 1.3 | |||||||||||||||||||||
BTDD003 | 486 | 512 | 26 | 0.19 | 0.06 | 1.1 | 2.1 | ||||||||||||||||||||
688 | 778 | 90 | 0.10 | 0.01 | 0.2 | 2.8 | |||||||||||||||||||||
23 Refer ASX announcement, 25 January 2022 Refer ASX announcement, 25 October 2018
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personal | ||||||
g/t | % | ppm | ||||
Au | Cu Lithology Mo | Lithology | ||||
Figure 2. Cross section A-B (refer Figure 3) viewed looking north showing drill hole traces with summary Cu, Au, Mo assays and lithology with diagrammatic cartoon representation of interpreted Zone A porphyry target. Cartoon representation Forbased on drill hole information, soil geochemistry and IP chargeability 2D and 3D models. Select diamond holes to be drilled
as part of the upcoming 2022 drilling program are also shown.
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Superior Resources Limited published this content on 01 June 2022 and is solely responsible for the information contained therein. Distributed by Public, unedited and unaltered, on 01 June 2022 23:41:05 UTC.