Emmie Bluff Deeps Mineralised Zone Substantially Expanded
Released
Released
Announcement PDF
ASX RELEASE
6 October 2021
ASX Code: COD
Emmie Bluff Deeps Mineralised Zone Substantially Expanded
Highlights
• Drilling at Emmie Bluff Deeps continues to identify thick zones of copper bearing sulphide
mineralisation including multiple additional intersections of bornite throughout the area
surrounding the original intersection in drillhole DD21EB0018.
• Some of the more significant new mineralised intervals logged by Coda’s field geologists include:
‐
67m of mineralisation over two vertically stacked lodes with 27m of extremely abundant
bornite in the upper lode in wedge hole DD21EBD0003W2;
‐
45m of pyrite and chalcopyrite mineralisation from 881m in DD21EBD0002;
‐
46m overall mineralised envelope including 17m of strong chalcopyrite mineralisation from
830m in DD21EBD0003W1;
‐
300m of pervasive hydrothermal alteration and disseminated trace to minor chalcopyrite
from 1,095m in DD21EBD0002W1.
• The +300m intercept in DD21EBD0002W1 highlights the vertically extensive nature of the
mineralising system, indicating the potential for significant extensions at depth.
Overview
New data from visual logging of core from the ongoing Emmie Bluff drilling program has significantly
increased the interpreted scale of the copper-bearing mineralisation observed at Emmie Bluff Deeps.
Eight deep holes have been completed to date with an additional two wedge holes currently in progress.
Three holes have intersected the copper rich “core” of the mineralisation, dominated by bornite with
accessory chalcopyrite, chalcocite and covellite.
A further five holes have intersected the periphery, dominated by chalcopyrite with accessory bornite
and pyrite.
The Emmie Bluff Deeps IOCG system has a localised copper rich core that is open in multiple directions.
This copper rich “core” then gradationally expands outwards to a larger halo of IOCG mineralisation
(Figure 3).
Mineralisation is laterally extensive, encountered over a drill tested area that currently covers a drill
backed area of approximately 300m x 200m which is open in all directions except directly north. Two
stacked sediment-hosted flat-lying lodes have been encountered to date, with evidence from historical
drilling suggesting additional lodes may yet be discovered.
The zonation of IOCG mineralisation with strong trending from pyrite to chalcopyrite to bornite/
chalcocite dominance closely mimics that seen in major IOCG deposits within the area.
The Company is aggressively following up on these results with two additional “wedge holes” designed
to intersect the copper rich bornite core zone currently in progress.
6 Altona Street
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Western Australia, 6005
E: info@codaminerals.com
ABN 49 625 763 957
Coda Minerals Limited (ASX: COD, “Coda”, or “the Company”), in conjunction with joint venture partner Torrens Mining
Limited (ASX: TRN), a listed gold and copper company (“Torrens”), is pleased to report significant new developments with the
ongoing IOCG drilling programme at Emmie Bluff Deeps.
The drilling programme continues to make excellent progress, providing further clarity on the nature of the emerging IOCG
discovery at Emmie Bluff Deeps, which was first highlighted by parent hole DD21EB0018. This hole intersected 35m of
mineralisation grading in excess of 1% copper with peak grades of 5.39% Cu within the higher grade bornite zones and 1.19g/t
Au in the main chalcopyrite zone (see ASX announcement, 28 July 2021).
In its most recent major update on 23 August 2021, Coda announced assay results for recently completed wedge holes (17.1m
@ 1.2% Cu, 0.3 g/t Au from 824m in DD21EB0018W1, 24.0m @ 2.2% Cu, 0.3 g/t Au from 815m and 12.9m @ 3.5% Cu, 0.6 g/t
Au from 902m in DD21EB0018W2).
Since that release, the Company has completed two additional surface diamond drill-holes (DD21EBD0002 and
DD21EBD0003), and a total of three wedge holes reported below. The drilling of additional wedge holes is ongoing to further
define the system.
IOCG-style mineralisation of varying thickness and tenor (as identified by visual logging of copper-bearing sulphides,
supported by hand-held XRF) has now been intersected over a significant area, and the Company’s exploration model has
evolved along with the results.
Recent drilling by Coda has now demonstrated the presence of mineralisation throughout an area of at least 300m east-west
by 200m north south. The mineralisation is essentially open in all directions except directly to the north of DD21EB0018, and
historical drill results provide strong evidence that lateral extension does occur beyond the bounds of recent drilling,
potentially as far as 800m to historical drillhole SAE 4 or beyond (see Figure 3).
Some of the most exciting intersections have come within the last several days from hole DD21EBD0003W2, which
encountered approximately 67m of mineralisation over two vertically stacked lodes including:
•
•
27m of bornite-chalcocite-covellite mineralisation from 803m down hole in the upper lode immediately adjacent to a
significant fault zone; and
a further 40m of blebby chalcopyrite dominated mineralisation (with trace disseminated bornite) from 912.5m down
hole.
Based on sulphide abundances logged by Coda’s exploration team, the upper lode bornite zone is expected to demonstrate
grades comparable to or in excess of the high grade bornite zone in DD21EB0018W2 but over this thicker mineralised zone,
while chalcopyrite abundances in the lower zone have been visually logged as being comparable to those in the
DD21EB0018 parent hole 1. Additional encouraging results have been seen in other holes. Of particular note are:
•
•
•
•
24m of blebby chalcopyrite and disseminated bornite mineralisation from 884.51m in DD21EBD0002W1,
300+m of pervasive hydrothermal alteration and disseminated trace to minor chalcopyrite from 1094.65m, also in
DD21EBD0002W1, indicating the strong potential for vertical extension to depth,
45m of pyrite and chalcopyrite mineralisation from 880.69m in DD21EBD0002; and
17m of strong chalcopyrite mineralisation from 830m in an overall mineralised envelope of 46m to 876m in hole
DD21EBD0003
Full details of these holes, including summary logs and visual estimates of sulphide abundances can be found in the Summary
of Results section, below, and visual summaries are available as Figure 1 and Figure 3.
1
For full details see DD21EBD0003W2 in the Summary of Results section, below.
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See Figure 1A
Figure 1 Simplified schematic cross section showing Emmie Bluff Deeps in broader context with Emmie Bluff Zambian hosted copper-cobalt mineralisation. Mineralising system is based on
seismic interpretation in conjunction with recent and historical drilling and is subject to change pending additional drill data.
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DD21EBD0002W1
>300m of intense hydrothermal
alteration and trace to minor
chalcopyrite
Figure 1A Detailed schematic section showing primary area of interest. Central bornite dominant sulphide zone decreases in intensity laterally chalcopyrite and eventually pyrite
(DD21EBD0002) begin to dominate. Chalcopyrite dominated mineralisation described in historical drilling may indicate an increase in intensity further east associated with additional parallel
mineralising structures yet to be identified.
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Figure 2 Emmie Bluff Deeps drillholes >600m, showing hole traces for Coda’s planned or completed holes/wedges.
Commenting on the results, Coda’s CEO Chris Stevens said: “These exciting new visual results from our ongoing drilling take
the Emmie Bluff Deeps discovery to an entirely new level. So far, we have had information for a relatively discrete area around
the parent hole. These new results substantially increase the mineralised footprint of the system and show that there is a
significant amount of copper present.
“We are also seeing increased thicknesses of potentially economic mineralisation and, importantly, the presence of a higher
grade bornite core. We are particularly encouraged by the intensity of alteration and abundance of sulphides which are being
reported by our field team, as well as the fact that we are seeing far greater lateral extensions to the mineralisation than we
have seen before. We are looking forward to releasing assay results as soon as possible.
“We have two drill rigs on-site currently drilling a third wedge hole each from most recently drilled parent holes EBD002 and
EBD003. These wedge holes are design to follow up on the most recent wedge from EBD003W2 which appears to have
intersected a major mineralising structure as evidenced by bornite and chalcopyrite rich copper sulphides logged by Coda’s
geologists over a total of 67m within the hole.
“Our task now is to continue to test the areas of open mineralisation as we seek to extend the copper-rich bornite zones and
to further test areas for vertical extension and additional stacked lodes.”
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Geological Interpretation
Based on the relatively small number of drillholes completed by Coda and previous explorers, the principal mineralisation at
Emmie Bluff appears to form as at least two (but likely more) relatively flat lying, parallel, partially overlapping, laterally
extensive stratiform sediment hosted assemblages of blebby, bedding parallel copper bearing sulphides associated with
intense haematite alteration and occasionally K feldspar, chlorite and sericite.
Taken as a whole, the sulphide assemblages encountered in drillholes DD21EB0018, DD21EBD0002, DD21EBD0003 and their
respective wedges show the following sequence, running west to east:
• a chalcopyrite dominated sequence in the west (DD21EB0018 and it’s first (western) wedge),
• a bornite dominated sequence in the middle (DD21EB0018’s second, eastern oriented wedge, DD21EBD0003W2’s
upper zone),
• another chalcopyrite dominated sequence in DD21EBD0002’s first (western oriented) wedge, and finally,
• a pyrite/chalcopyrite dominated sequence in DD21EBD0002 itself.
>800m undrilled between recent
intersects and historical drilling to
the east (SAE 4)
Expansion Poten�al
DD21EB0018
DD21EBD0002
Expansion Poten�al
Mineralisa�on is open to the west,
south and southeast
Expansion Poten�al
>400m undrilled between recent
intersects and historical drilling to
the east (MGD 55, SAE 3)
DD21EBD0003
Figure 3 Mineralisation pierce points categorised by sulphide assemblage. Note the clustering of high copper intensity
bornite mineralisation in a northwest/southeast aligned core, and the lateral zonation to the east and west in particular.
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This clear pattern of increasing then reducing copper intensity suggests the presence of a mineralising structure in the area
between holes DD21EB0018 and DD21EBD0002. Drillhole DD21EBD0002W1 was extended a considerable distance into the
basement Donington suite granite with the intention of intersecting this structure directly or an alteration halo sufficient to
confirm its presence and provide an indication of scale and orientation. The extended interval of disseminated chalcopyrite
and extensive alteration (K feldspar, biotite and sericite) encountered at depth indicate proximity to a structure, but no fault
brecciation or other indications of the structure itself were directly intersected. This suggests that the drillhole could be
parallel or sub parallel to such a structure, which would most likely be dipping steeply to the west and oriented roughly northsouth.
A candidate for the mineralising structure was intersected in DD21EBD0003W2, with initial evidence suggesting that the
intersected structure may be at least associated with mineralisation based on proximal high intensity sulphidation.
The lateral zonation of the sulphides, and their split into subparallel flat lying stacked lodes suggest a structural pathway for
fluids which then diffuse outwards into sedimentary layers, with control of copper sulphides most likely associated with
chemical or physical properties of specific sedimentary strata. Stacking of lodes may be related to pre or post mineralisation
reverse half graben “domino” faulting observed in seismic sections further east. It also seems likely that the intrusion of
possible Hiltaba Suite granitoids, possibly syndepositional, played a role in the distribution of sulphides, but this has not yet
been confirmed, with petrological reports and dating expected to assist in this regard when finalised in the coming weeks.
A hypothetical interpretive cross section is included as Figure 1.
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Figure 4 Steely haematite altered metasediments in DD21EBD0003W2. Covellite bornite and chalcocite are visible in
particularly high abundance in this section of the core.
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Figure 5 Chalcopyrite dominated mineralisation in the lower mineralised lode from DD21EBD0003W2.
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Summary of Results
DD21EBD0002
DD21EBD0002 was drilled approximately 300m ESE of Coda’s original deep drillhole in the area DD21EB0018, and was
designed to target the area in between that hole and historic hole MGD 55, which encountered 15m @ 1.21%Cu
& 0.24g/t Au from 974m when it was drilled by a previous explorer in 2009.
A broad zone of mineralisation was encountered running from roughly 874m to 932m, placing it roughly level in RL terms with
the lower lode encountered in DD21EB0018W2. The mineralisation was of a lower tenor than that hole however, with a
significant pyrite component, which had been largely absent from drillholes up until this point. As with previous drillholes,
mineralisation was associated with haematised Wandearah metasediments and appeared to partially follow remnant
sedimentary structures in several instances. Due to the presence of pyrite, this intercept has been preliminarily assumed to
be of lower copper tenor than previous intercepts, and is assumed to be somewhat more distal from the mineralising structure
than previous drilling.
DD21EBD0002 encountered the following sequence of rocks:
From
(m)
To
(m)
Int.
(m)
663.5
665.5
2
665.5
728
62.5
728
799
71
799
830
31
830
874
44
874
878
4
878
881
3
881
890.5
9.5
1-3% Chalcopyrite
1-3% Pyrite
890.5
899
8.5
1-3% Chalcopyrite
3-5% Pyrite
899
925
26
1-2% Chalcopyrite
1-3% Pyrite
925
932
7
1-3% Chalcopyrite
3-5% Pyrite
932
995
63
995
1039.2
44.2
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Comp.
Int
4m
51m
Estimated Sulphide Assemblage
1-3% Chalcopyrite
1-3% Pyrite, <1% Bornite
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Description
Moderately haematite altered basal Pandurra Formation
sandstones and conglomerates.
Haematised brecciated metasediments and Hiltaba
granite, patchy replacement by steely haematite.
Variable steely haematite replacement of sandstone.
Variably haematite and potassium feldspar-altered
granite interspersed by moderately chloritised dolerite
dykes.
Massive steely haematite replacement of sediments.
Moderately chloritic haematised sediments, trace
bornite and pyrite, minor chalcopyrite as blebs and
disseminations.
Highly siliceous haematised sediments.
Haematised sediments, occasional replacement by steely
haematite. Trace to minor disseminated and blebby
chalcopyrite, minor pyrite.
Massive steely haematite replacement of sediments with
minor chalcopyrite and minor pyrite.
Haematised metasediments, occasional replacement by
steely haematite with minor disseminated and blebby
chalcopyrite, minor pyrite.
Weak to moderate chlorite-haematite altered
metasediments with minor disseminated and blebby
chalcopyrite, minor pyrite.
Variably siliceous sediments interspersed with granite
intrusions.
Presumed Donington suite weakly altered granitoid.
Figure 6 Mineralisation in DD21EBD0002. The sulphide assemblage includes chalcopyrite, but has a materially higher pyrite
content, possibly indicative of local conditions or distance from the source of mineralisation.
DD21EBD0002W1
On the basis of results in the parent hole, a wedge was drilled to the WSW from DD21EBD0002, commencing at 489.3m
downhole. The hole achieved approximately 50m of separation at the mineralised zone, and encountered a materially
different sulphide assemblage within broadly similar stratigraphy. The primary mineralised zone consisted of approximately
24m of principally chalcopyrite located as blebs and veinlets, often paralleling remnant sedimentary structures, and rare blebs
and disseminations of bornite. Pyrite was largely absent in this interval, in contrast to the parent hole, suggesting closer
proximity to the source of mineralisation.
Figure 7 Massive chalcopyrite vein within a broader mineralised envelope of approximately 24.m consisting of blebs and
veinlets of similar sulphides in an intensely haematised metasedimentary host rock, DD21EBD0002W1.
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The wedge hole was extended beyond the typical depth to mineralisation in the area in an attempt to intersect the
mineralising structure directly, and was terminated at a depth of 1,492m. The hole encountered several hundred metres of
highly altered Donington Suite granitoids cut by Gairdner dykes. Alteration included abundant sericite, biotite and “red rock”
(K Feldspar and minor haematite) alteration, with persistent trace chalcopyrite, typically occurring as disseminations and very
small blebs, though larger accumulations were encountered, especially in association with vein selvedges or particularly
intense patches of red rock alteration.
Alteration of this nature is not typical of the Donington Suite granites in this region, and in particular the persistent low grade
chalcopyrite encountered over such an extended interval strongly suggest proximity to a vertical or subvertical hydrothermally
active, copper carrying structure which extends deep into the basement.
The hole did not directly intersect the fault, and alteration intensity did not appear to increase markedly over the length of
the intersection. This has led Coda’s technical team too theorise that the structure may have been parallel or sub parallel to
the drill trace. The next wedge hole, DD21EBD0002W2, is being drilled at a flatter angle and is expected to intersect this
structure.
Figure 8 Sulphide blebs and intense “red rock” (K Feldspar + accessory haematite) alteration in hole DD21EBD0002W1. This
material was encountered in Donington Suite granite at significant depth (1,241m). Strong red rock alteration, plus biotite
and sericite, was typical of the granite in this hole, but atypical of Donington Suite Granite encountered in other holes,
suggesting potential proximity to a hydrothermally significant structure. Portable XRF has confirmed elevated copper values
in the sulphide, validating the field identification of chalcopyrite.
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Western Australia, 6005
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DD21EBD0002W1 encountered the following sequence of rocks:
From
(m)
To
(m)
Int.
489.3
661
171.7
661
677
16
677
713
36
713
720
7
720
812
92
812
860
48
860
867.5
7.5
867.5
870.5
3
870.5
884.5
14
884.5
908.5
24
908.5
934
25.5
934
1094.5
160.5
1094.5
1345.5
251
Comp.
Int
Estimated Sulphide Assemblage
3m
<1% Chalcopyrite, <1% Bornite
24m
5-10% Chalcopyrite, <1% Bornite
<1-2% Chalcopyrite
322.5m
1345.5
1417
71.5
1417
1441.5
24.5
1441.5
1447
5.5
1447
1492
45
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<1-1% Chalcopyrite
5.5m
<1% Chalcopyrite
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Description
Minimally altered Pandurra Formation sandstones and
conglomerates, with a basal conglomerate containing
steely haematite clasts from 660.75.
Sill of moderate haematite-chlorite altered granite and
dolerite.
Intense steely haematite altered brecciated sandstone.
Moderate to strongly haematised granite and dolerite
dykes.
Variably haematite altered brecciated sandstone, patchy
steely haematite replacement and intense silicification.
Moderately haematised and potassium feldspar altered
granite.
Moderately haematite altered sandstone, steely
haematite increasing with depth, associated with
moderately to strongly chloritised dolerite dykes..
Steely haematite and red rock altered brecciated
sandstone with trace chalcopyrite and bornite blebs.
Silicified sediments with pronounced remnant texture.
Moderately chlorite-haematite altered sandstone,
intruded by variably chloritised dolerite dykes, minor to
moderate blebby chalcopyrite, trace bornite.
Moderately chlorite-haematite altered sandstone,
intruded by weakly chloritic dolerite dykes.
Moderately siliceous and variably potassium feldspar
altered sandstones intruded by dolerite dykes.
Presumed Donington suite moderately sericite altered
granitoid, intruded by Gardiner dolerite dykes, trace to
minor disseminated chalcopyrite.
Presumed Donington suite moderately sericite-biotite
altered granitoid, trace to minor disseminated
chalcopyrite.
Presumed Donington suite moderately haematitepotassium feldspar altered granitoid.
Presumed Donington suite moderately altered granitoid
intruded by dolerite dykes, trace chalcopyrite as blebs.
Presumed Donington suite moderately haematitepotassium feldspar altered granitoid.
DD21EBD0003
DD21EBD0003 was drilled approximately 300m to the south of DD21EB0018 and angled slightly to the north, targeted to
extend the bornite mineralisation encountered in DD21EBD0018W2. Lithologies encountered were broadly similar as would
be expected, but with certain key differences, most notably the haematite cap material was significantly thicker, and as a
result encountered at a higher RL than in previous drillholes.
Mineralisation was encountered from approximately 901-921m and consisted of bornite dominated sulphides in variably
steely and earthy haematite altered metasediments. This mineralisation was approximately level with the lower lode
encountered in DD21EB0018W2, and is believed to be an extension of that mineralisation. Sulphides were not noted in
significant quantities from 800-850m, which would approximately correspond with the upper lode in DD21EB0018W2. This
was initially interpreted to suggest that that lode had pinched out, but future drilling (See DD21EBD0003W1 and
DD21EBD0003W2, below) indicated that this may not be the case. The factors determining the precipitation of copper
sulphides at a given location are yet to be determined.
DD21EBD0003 encountered the following sequence of rocks:
From
(m)
To
(m)
Int.
(m)
542.75
561.5
18.75
561.5
670
108.5
670
713.5
43.5
713.5
809.5
96
809.5
861
51.5
861
874.5
874.5
901
13.5
26.5
901
903.5
2.5
903.5
911.5
8
911.5
921
9.5
921
942.5
21.5
942.5
996
53.5
996
1029.1
33.1
Comp.
Int
Estimated Sulphide Assemblage
Description
Minimally altered Pandurra Formation sandstones and
conglomerates.
Strongly haematised metasediment with development of
steely haematite bands.
Moderately to strongly haematised sandstone, patchy
replacement by steely haematite.
1 - 2% Bornite
<1 - 1% Chalcopyrite
20m
1 - 2% Bornite
<1 - 1% Bornite
Variably haematite and potassium feldspar-altered granite.
Haematised metasediments, occasional replacement by
steely haematite.
Variably haematite and potassium feldspar altered granite.
Weakly haematised metasediments.
Strong to intense haematite altered metasediments,
patches of steely haematite, with trace disseminated and
blebby chalcopyrite and trace to minor bornite.
Earthy red haematite with patches of steely, minor bornite
in blebs.
Massive earthy red and patchy steely haematite, completely
overprinting sedimentary texture. Trace disseminated and
patchy minor blebby bornite.
Moderately to strongly haematised and chloritised
metasediments.
Variably siliceous and haematitic sediments.
Variably siliceous and potassium feldspar altered presumed
Donington suite granitoid.
DD21EBD0003W1
The first wedge from hole DD21EBD0003 was drilled to the northwest, and achieved approximately 58m of lateral separation
at 814m, where mineralisation was first encountered in the wedge. Sulphides were encountered in multiple discrete layers
between 814 and 876m, and were dominated by chalcopyrite. Though roughly on a level with the upper lode encountered in
DD18EB0018 and its wedges, the mineralisation in DD21EBD0003W1 does not appear to fully conform with the previous
paradigm of an upper and lower lateral lode, and may represent a merger of the two lodes, or a diffusion of sulphides into a
broader mineralised zone. Further drilling west of this intersection may assist in determining the nature of the mineralisation
and will be undertaken as the next surface hole.
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Western Australia, 6005
E: info@codaminerals.com
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DD21EBD0003W1 encountered the following sequence of rocks:
From
(m)
547.8
To
(m)
561.5
Int.
(m)
13.7
Comp.
Int
561.5
613
51.5
613
615
2
615
714
99
Haematised metasediments, occasional replacement by
steely haematite.
714
738
24
Variably haematite-chlorite altered granite.
738
812.5
74.5
Variably chlorite-haematite altered granite.
812.5
814.5
2
814.5
818
3.5
Altered haematised Wandearah metasediments.
Patchy steely haematite alteration with minor blebby
chalcopyrite.
818
830
12
830
847.5
17.5
847.5
862
14.5
862
876
14
876
996.2
120.2
Estimated Sulphide Assemblage
Description
Base of Pandurra Formation.
2m
3.5m
<1 Pyrite, <1% Chalcopyrite
<1 - 2% Chalcopyrite
Variably haematised metasediments.
Massive steely haematite replacement of metasediments.
Trace pyrite and chalcopyrite.
Red rock and chlorite altered sandstone.
<1 - 2% Chalcopyrite, <1% Pyrite
46m
<1% Chalcopyrite
<1 - 1% Chalcopyrite, <1% Pyrite
Steely haematite altered sandstone with minor chalcopyrite.
Haematite and chlorite altered sandstone, trace chalcopyrite
as blebs.
Increasingly altered, partially brecciated sandstone, minor
chalcopyrite.
Strongly siliceous, variably potassium feldspar altered
sandstone.
DD21EBD0003W2
The second wedge from DD21EBD0003 was oriented northeast and achieved approximately 49m of lateral separation from
the parent hole at 803.45, where major mineralisation was first encountered in the wedge. The wedge was designed to target
a structure hypothesised to be feeding the system with copper based on the sulphide assemblages encountered in earlier
drillholes.
An unusual vein of native copper, bornite and chalcocite was encountered at 615m, well above typical mineralised depths
and within the (typically) barren haematite cap (see Figure 9, below). The mineralisation appears primary, but it is not
extensive and is likely anomalous rather than representative of potential for mineralisation in the cap more broadly.
The hole also encountered the first unambiguous evidence of major faulting with a 20-25m wide interval of broken ground,
clays etc from 772.27. No evidence was directly observed for mineralisation within this fault, though rocks associated with it
were notably altered, but proximal mineralisation (commencing at 803.45m) included some of the most intense and abundant
sulphides of the program to date, possibly as a consequence of proximity to the fault if it is indeed the mineralising structure
which this hole was targeted at. This mineralisation, extending over approximately 27m, was dominated by bornite and
chalcocite with considerable covellite associated.
A second zone of mineralisation was encountered from 912m, dominated by chalcopyrite with minor bornite and extending
over approximately 40m. Drilling is ongoing as of the time of this release.
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Western Australia, 6005
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DD21EBD0003W2 encountered the following sequence of rocks:
From
(m)
547.8
To
(m)
564.5
Int.
(m)
16.7
Comp.
Int
564.5
723
158.5
723
729
6
729
737.5
8.5
737.5
760.5
23
760.5
772.5
12
772.5
794
21.5
Broken zone within strongly haematised granite
transitioning into clayey puggy fault zone.
794
803.5
9.5
Fractured haematitsed (occasionally steely) chloritized
Wandearah sediments.
803.5
810.5
7
<1% Bornite, <1% Chalcopyrite
810.5
819
8.5
5 - 10% Bornite, 1-3%
Chalcopyrite, <1% Covellite
819
824
5
5 - 10% Bornite, 1-3% Covellite,
<1% Chalcopyrite
824
830.5
6.5
3 - 5% Bornite, 1-3%
Chalcopyrite
830.5
846
15.5
846
876.5
30.5
876.5
812.5
-64
Intercalated granite, mafic and minor granitised
sediment, all altered, haematised.
812.5
912.5
100
912.5
941.5
29
Altered haematised Wandearah metasediments.
Haematite altered Wandearah, minor to moderate
blebby and bedding parallel chalcopyrite, disseminated
bornite.
Variably haematised metasediments, including massive
haematite cap. Native copper encountered in narrow
vein along with copper sulphides approx. 615m.
Intercalated metasediments, narrow granitic sills and
dolerite.
Haematite altered Hiltaba suite granite.
Weakly haematised and altered dolerite, presumed to
be Gairdner.
Increasingly altered Hiltaba suite granite. Increasing
epidote, chlorite k feldspar and haematite alteration
with depth.
40m
952.5
952.5
Ongoing
11
3 - 8% Chalcopyrite, 1 - 3%
Bornite
3 - 5% Chalcopyrite, <1 - 2%
Bornite
Steely haemtite altered metasediments, partially
chloritized. Trace bornite, chalcopyrite.
Steely haematite altered strongly mineralised
metasandstone,
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