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GSQ Mineral System Collection: Spotlight on Ernest Henry
Courteney Dhnaram
Minerals Geoscience
Geological Survey of Queensland
Acknowledgments
• Mineral Systems team (Vladimir Lisitsin, Suraj Gopalakrishnan and Daniel Killen)
• Jon Huntington (Huntington Hyperspectral Pty Ltd)
Outline
• Mineral System Collection• Rationale• Approach
• Case Study
• Ernest Henry Copper Gold System
• Drill core collection and sampling plans
• Initial results of Hylogger interpretation
Rationale
Systematic collection of geological information and representative samples characterising key mineral systems in the Mount Isa Province at all scales
Background
• GSQ are the custodians of geological data and knowledge for Queensland
• DNRME has the responsibility to maintain and grow existing drill core collection
• Collections housed in both Brisbane and Mount Isa core facilities
Existing mineral drill core
• ~1800 drill holes with core across State
• 761 drill holes with core in Mount Isa Province
• ~160 drill holes with core post 1995
• Donations of core from Ernest Henry and Mount Isa Cu-Pb-Zn systems in 2018
holdings
Project scope
To create both a physical and virtual reference collection of mineral systems across the Mount Isa Province
• Funding under the New Discovery program of SREP (2018-2021)
• Plans to continue building up collection within NW Qld and across the State
Project scope
• Acquire drill core and associated data from major deposits and current active projects
• Collection will be stored at the Mount Isa core facility, with a representative set of samples housed in Brisbane
Project scope
• Collect geochemical, mineralogical, petrophysical and geochronological data on these drill core to form a ‘baseline’ of key mineral systems
• Data collection is a much wider process and will complement datasets acquired on samples in the collection
Approach
• Representative sample collection from key deposits
• Orebody-proximal-distal-background
Approach
• Initially focusing on major Cu-Au and Pb-Zn-Agdeposits
• Characterising mineral systems not deposits • looking to sample from Cu-Co, Au-As-Bi, Mo-Re deposits/prospects
Areas of focus over next 12 months
• Mount Elliott/SWAN
• Eva (Roseby)
• Ernest Henry
• Overlander/Kalman/Elaine
• Mammoth/Esperanza (Capricorn Copper)
• Mount Kelly
• Dugald River
• Walford Creek
Case study
Ernest Henry Cu-Au system
• ‘typical’ iron oxide copper gold (IOCG) deposit in the Eastern Succession
• one major deposit (Ernest Henry), with satellite deposits (E1) and similar prospects (FC targets)
How far away can you see the alteration signature of the Ernest Henry deposit?
NWQMP Deposit Atlas, 2018
Ernest Henry
E1/Mount Margaret
FC4 Prospect
FC4N Prospect
FC4S Prospect
Representative drill holes
Glencore
• two through orebody
• two within the inner halo
• one deep drill hole (1.7km)
GBM Resources
• three drill holes from FC4S
target
• ~4.9km of drill core scanned by Hylogger from core permanently in our collection
• 2 drill holes (EH 435, EH550) scanned by TruScan
• ~300 samples taken for geochemistry, mineral chemistry and petrophysics (CODES, BRC, CSIRO)
• Sampling planned on 7 more drill holes to complement and extend existing sampling
Bore_No Bore Name Total_DepthCore
from
Core
toTotal Core Truscan
71762 ERNEST HENRY EH435 630 89.7 630 540.3 Y
71763 ERNEST HENRY EH550 1044.5 164.8 1045 879.7 Y
74969 ERNEST HENRY EH154 252.4 101.8 252.4 150.6
74970 ERNEST HENRY EH242 324 55.1 247 191.8
74671 FC4S MMA001 652.8 63.4 652.3 588.9
74672 FC4S MMA002 510 86.1 510 423.9
74673 FC4S MMA003 549 78.8 549 470.2
74842 MOUNT FORT CONSTANTINE EHMT001 1746.7 98.2 1747 1648.5
4893.9
Current work
Hyperspectral scanning
• Hylogger 3 machine based at our Exploration Data Centre (Brisbane)
• Visible near infrared (VIR)-Short wave infrared (SWIR) and Thermal infrared (TIR) spectrums
• Detect oxide, carbonate, hydrous and anhydrous silicate mineralogy
• High resolution core photography
http://portal.auscope.org/
Ernest Henry alteration• Stage 1
• Regional albitization, Na-Ca and Biotite-Magnetite alteration
• Stage 2• Varies from K-feldspar and garnet-rich veining
to K-feldspar alteration
• Stage 3• Matrix-supported hydrothermal ore
• Crackle veining-controlled ore
• Stage 4• Late stage fluids (not shown in table)
Mark et al, 2006
Distal Proximal Ore
ErnestHenryEH154 Tray 0023, 226.1 to 231.6 m
Distance along section (mm)0 200 400 600 800 1000
226.25 m 226.5 m 226.75 m 227 m
226.1
m
P1:P2:P3:
D3
In
cre
asin
g w
227.25 m 227.5 m 227.75 m
227.0
3 m
P1:P2:P3:
D3
In
cre
asin
g w
228 m 228.25 m 228.5 m 228.75 m
227.9
51 m
P1:P2:P3:
D3
In
cre
asin
g w
229 m 229.25 m 229.5 m 229.75 m
228.8
77 m
P1:P2:P3:
D3
In
cre
asin
g w
230 m 230.25 m 230.5 m
229.7
67 m
P1:P2:P3:
D3
In
cre
asin
g w
230.75 m 231 m 231.25 m 231.5 m
230.6
88 m
P1:P2:P3:
D3
In
cre
asin
g w
Carb alt Garnet veins
Hem dusted albite Albite? KFS?
Detectable minerals
• Highlighted minerals (red) not detectable
• Minerals (blue) are only detectable when massive
• Hylogger data allows for interpretation of multiple alteration phases by interrogating both spectra and detailed core photos
Mark et al, 2006
Distal Proximal Ore
• Ore-Proximal-Distal?• EH435, EH550 EH242,
EH154 EHMT001
• Distal?• MMA001, MMA003
MMA002
???
FC4s holes 2km154 242 435 550 EHMT001
EH
43
5: S
pa
tial S
um
ma
ry (B
in=
4 M
inB
in=
5%
uT
SA
+ 7
.05
, Min
era
l Su
bs
et)
Dep
th (m
)
Bin % Rel. Weight
12
02
40
36
04
80
60
07
20
84
09
60
0 40 80
Min
era
l
Aspectra
l
Gypsum
Dolo
mite
Calc
ite
Sid
erite
Horn
ble
nde
Phlo
gopite
Chlo
rite-M
g
Chlo
rite-F
eM
g
Chlo
rite-F
e
Phengite
Kaolin
ite-W
X
Do
ma
in
EH
55
0: S
pa
tial S
um
ma
ry (B
in=
4 M
inB
in=
5%
uT
SA
+ 7
.05
, Min
era
l Su
bs
et)
Dep
th (m
)
Bin % Rel. Weight
12
02
40
36
04
80
60
07
20
84
09
60
0 40 80
Gro
up
INV
ALID
SU
LPH
ATE
CA
RB
ON
ATE
AM
PH
IBO
LE
DA
RK
-MIC
A
CH
LO
RIT
E
SM
EC
TIT
E
WH
ITE-M
ICA
Do
ma
in
Ern
es
tHe
nry
_E
H2
42
: Sp
atia
l Su
mm
ary
(Bin
=4
Min
Bin
=5
% u
TS
A+
7.0
5, M
ine
ral S
ub
se
t)
Dep
th (m
)
Bin % Rel. Weight
12
02
40
36
04
80
60
07
20
84
09
60
0 40 80
Gro
up
INV
ALID
SU
LPH
ATE
CA
RB
ON
ATE
DA
RK
-MIC
A
CH
LO
RIT
E
WH
ITE-M
ICA
KA
OLIN
Do
ma
in
Ern
es
tHe
nry
EH
15
4: S
pa
tial S
um
ma
ry (B
in=
4 M
inB
in=
5%
uT
SA
+ 7
.05
, Min
era
l Su
bs
et)
Dep
th (m
)
Bin % Rel. Weight
12
02
40
36
04
80
60
07
20
84
09
60
0 40 80
Min
era
l
Aspectra
l
Gypsum
Calc
ite
Sid
erite
Bio
tite
Chlo
rite-M
g
Chlo
rite-F
eM
g
Phengite
Muscovite
Do
ma
in
Distal
Mo
un
tFo
rtCo
ns
tan
tine
_E
HM
T0
01
: Sp
atia
l Su
mm
ary
(Bin
=4
Min
Bin
=5
% u
TS
A+
7.0
5, M
ine
ral S
ub
se
t)
Dep
th (m
)
Bin % Rel. Weight
20
04
00
60
08
00
10
00
12
00
14
00
16
00
0 40 80
Gro
up
INV
ALID
SU
LPH
ATE
CA
RB
ON
ATE
AM
PH
IBO
LE
DA
RK
-MIC
A
CH
LO
RIT
E
SM
EC
TIT
E
WH
ITE-M
ICA
Do
ma
in
EH435: Spatial Summary (Bin=4 MinBin=5% uTSA+ 7.05, Mineral Subset)
Depth (m)
Bin
% R
el.
Weig
ht
120 240 360 480 600 720 840 960
04
08
0
Mineral
Aspectral
Gypsum
Dolomite
Calcite
Siderite
Hornblende
Phlogopite
Chlorite-Mg
Chlorite-FeMg
Chlorite-Fe
Phengite
Kaolinite-WX
Domain
Hydrous minerals
120
240
360
480
600
720
840
960
m
200
400
600
800
1000
1200
1400
1600
m
Ore Proximal Proximal?
Distal?l
EH435
EH550
EH242 EH154
EHMT001
EH
43
5_
tsg
_tir: S
pa
tial S
um
ma
ry (B
in=
4 M
inB
in=
5%
uT
SA
T 7
.07
, Min
era
l Su
bs
et)
Dep
th (m
)
Bin % Rel. Weight
12
02
40
36
04
80
60
07
20
84
09
60
0 40 80
Gro
up
SU
LP
HA
TE
CA
RB
ON
ATE
AM
PH
IBO
LE
DA
RK
-MIC
A
SM
EC
TIT
E
PLA
GIO
CLA
SE
K-F
ELD
SP
AR
SIL
ICA
Do
ma
in
EH
55
0_
tsg
_tir: S
pa
tial S
um
ma
ry (B
in=
4 M
inB
in=
5%
uT
SA
T 7
.07
, Min
era
l Su
bs
et)
Dep
th (m
)
Bin % Rel. Weight
12
02
40
36
04
80
60
07
20
84
09
60
0 40 80
Gro
up
PH
OS
PH
ATE
SU
LP
HA
TE
CA
RB
ON
ATE
AM
PH
IBO
LE
DA
RK
-MIC
A
CH
LO
RIT
E
SM
EC
TIT
E
WH
ITE
-MIC
A
PLA
GIO
CLA
SE
K-F
ELD
SP
AR
SIL
ICA
Do
ma
in
Ern
es
tHe
nry
_E
H2
42
_ts
g_
tir: Sp
atia
l Su
mm
ary
(Bin
=4
Min
Bin
=5
% u
TS
AT
7.0
7, M
ine
ral S
ub
se
t)
Dep
th (m
)
Bin % Rel. Weight
12
02
40
36
04
80
60
07
20
84
09
60
0 40 80
Gro
up
SU
LP
HA
TE
CA
RB
ON
ATE
DA
RK
-MIC
A
SM
EC
TIT
E
WH
ITE
-MIC
A
KA
OLIN
PLA
GIO
CL
AS
E
K-F
ELD
SP
AR
SIL
ICA
Do
ma
in
Ern
es
tHe
nry
EH
15
4_
tsg
_tir: S
pa
tial S
um
ma
ry (B
in=
4 M
inB
in=
5%
uT
SA
T 7
.07
, Min
era
l Su
bs
et)
Dep
th (m
)
Bin % Rel. Weight
12
02
40
36
04
80
60
07
20
84
09
60
0 40 80
Min
era
l
Bio
tite
Chlo
rite-F
eM
g
Muscovite
Olig
ocla
se
Alb
ite
Orth
ocla
se
Mic
roclin
e
Quartz
Do
ma
in
Mo
un
tFo
rtCo
ns
tan
tine
_E
HM
T0
01
_ts
g_
tir: Sp
atia
l Su
mm
ary
(Bin
=4
Min
Bin
=5
% u
TS
AT
7.0
7, M
ine
ral S
ub
se
t)
Dep
th (m
)
Bin % Rel. Weight
20
04
00
60
08
00
10
00
12
00
14
00
16
00
0 40 80
Gro
up
SU
LPH
ATE
CA
RB
ON
ATE
EPID
OTE
OTH
ER
-MG
OH
AM
PH
IBO
LE
DA
RK
-MIC
A
CH
LO
RIT
E
SM
EC
TIT
E
WH
ITE-M
ICA
PY
RO
XEN
E
PLA
GIO
CLA
...
K-F
ELD
SPA
R
SIL
ICA
Do
ma
in
EH435_tsg_tir: Spatial Summary (Bin=4 MinBin=5% uTSAT 7.07, Mineral Subset)
Depth (m)
Bin
% R
el.
Weig
ht
120 240 360 480 600 720 840 960
04
08
0
Group
SULPHATE
CARBONATE
AMPHIBOLE
DARK-MICA
SMECTITE
PLAGIOCLASE
K-FELDSPAR
SILICA
Domain
Anhydrous minerals
120
240
360
480
600
720
840
960
m
200
400
600
800
1000
1200
1400
1600
m
Ore Proximal Proximal?
Distal?l
EH435
EH550
EH242 EH154
EHMT001
FC
4S
_M
MA
00
1: S
pa
tial S
um
ma
ry (B
in=
4 M
inB
in=
5%
uT
SA
+ 7
.05
, Min
era
l Su
bs
et)
Dep
th (m
)
Bin % Rel. Weight
12
02
40
36
04
80
60
07
20
84
09
60
0 40 80
Gro
up
INV
ALID
CA
RB
ON
ATE
AM
PH
IBO
LE
DA
RK
-MIC
A
CH
LO
RIT
E
WH
ITE-M
ICA
Do
ma
in
FC
4S
_M
MA
00
2: S
pa
tial S
um
ma
ry (B
in=
4 M
inB
in=
5%
uT
SA
+ 7
.05
, Min
era
l Su
bs
et)
Dep
th (m
)
Bin % Rel. Weight
12
02
40
36
04
80
60
07
20
84
09
60
0 40 80
Gro
up
INV
ALID
SU
LPH
ATE
CA
RB
ON
ATE
EPID
OTE
AM
PH
IBO
LE
DA
RK
-MIC
A
CH
LO
RIT
E
WH
ITE-M
ICA
Do
ma
in
EH
43
5: S
pa
tial S
um
ma
ry (B
in=
4 M
inB
in=
5%
uT
SA
+ 7
.05
, Min
era
l Su
bs
et)
Dep
th (m
)
Bin % Rel. Weight
12
02
40
36
04
80
60
07
20
84
09
60
0 40 80
Min
era
l
Aspectra
l
Gypsum
Dolo
mite
Calc
ite
Sid
erite
Horn
ble
nde
Phlo
gopite
Chlo
rite-M
g
Chlo
rite-F
eM
g
Chlo
rite-F
e
Phengite
Kaolin
ite-W
X
Do
ma
in
EH
55
0: S
pa
tial S
um
ma
ry (B
in=
4 M
inB
in=
5%
uT
SA
+ 7
.05
, Min
era
l Su
bs
et)
Dep
th (m
)
Bin % Rel. Weight
12
02
40
36
04
80
60
07
20
84
09
60
0 40 80
Gro
up
INV
ALID
SU
LPH
ATE
CA
RB
ON
ATE
AM
PH
IBO
LE
DA
RK
-MIC
A
CH
LO
RIT
E
SM
EC
TIT
E
WH
ITE-M
ICA
Do
ma
in
Ern
es
tHe
nry
_E
H2
42
: Sp
atia
l Su
mm
ary
(Bin
=4
Min
Bin
=5
% u
TS
A+
7.0
5, M
ine
ral S
ub
se
t)
Dep
th (m
)
Bin % Rel. Weight
12
02
40
36
04
80
60
07
20
84
09
60
0 40 80
Gro
up
INV
ALID
SU
LPH
ATE
CA
RB
ON
ATE
DA
RK
-MIC
A
CH
LO
RIT
E
WH
ITE-M
ICA
KA
OLIN
Do
ma
in
Ern
es
tHe
nry
EH
15
4: S
pa
tial S
um
ma
ry (B
in=
4 M
inB
in=
5%
uT
SA
+ 7
.05
, Min
era
l Su
bs
et)
Dep
th (m
)
Bin % Rel. Weight
12
02
40
36
04
80
60
07
20
84
09
60
0 40 80
Min
era
l
Aspectra
l
Gypsum
Calc
ite
Sid
erite
Bio
tite
Chlo
rite-M
g
Chlo
rite-F
eM
g
Phengite
Muscovite
Do
ma
in
Distal
120
240
360
480
600
720
840
960
m
Ore Proximal
EH435
EH550
EH242 EH154
Hydrous minerals
MMA001
MMA003
MMA002
EH435: Spatial Summary (Bin=4 MinBin=5% uTSA+ 7.05, Mineral Subset)
Depth (m)
Bin
% R
el.
Weig
ht
120 240 360 480 600 720 840 960
04
08
0
Mineral
Aspectral
Gypsum
Dolomite
Calcite
Siderite
Hornblende
Phlogopite
Chlorite-Mg
Chlorite-FeMg
Chlorite-Fe
Phengite
Kaolinite-WX
Domain
Distal??
EH
43
5_
tsg
_tir: S
pa
tial S
um
ma
ry (B
in=
4 M
inB
in=
5%
uT
SA
T 7
.07
, Min
era
l Su
bs
et)
Dep
th (m
)
Bin % Rel. Weight
12
02
40
36
04
80
60
07
20
84
09
60
0 40 80
Gro
up
SU
LP
HA
TE
CA
RB
ON
ATE
AM
PH
IBO
LE
DA
RK
-MIC
A
SM
EC
TIT
E
PLA
GIO
CLA
SE
K-F
ELD
SP
AR
SIL
ICA
Do
ma
in
EH
55
0_
tsg
_tir: S
pa
tial S
um
ma
ry (B
in=
4 M
inB
in=
5%
uT
SA
T 7
.07
, Min
era
l Su
bs
et)
Dep
th (m
)
Bin % Rel. Weight
12
02
40
36
04
80
60
07
20
84
09
60
0 40 80
Gro
up
PH
OS
PH
ATE
SU
LP
HA
TE
CA
RB
ON
ATE
AM
PH
IBO
LE
DA
RK
-MIC
A
CH
LO
RIT
E
SM
EC
TIT
E
WH
ITE
-MIC
A
PLA
GIO
CLA
SE
K-F
ELD
SP
AR
SIL
ICA
Do
ma
in
Ern
es
tHe
nry
_E
H2
42
_ts
g_
tir: Sp
atia
l Su
mm
ary
(Bin
=4
Min
Bin
=5
% u
TS
AT
7.0
7, M
ine
ral S
ub
se
t)
Dep
th (m
)
Bin % Rel. Weight
12
02
40
36
04
80
60
07
20
84
09
60
0 40 80
Gro
up
SU
LP
HA
TE
CA
RB
ON
ATE
DA
RK
-MIC
A
SM
EC
TIT
E
WH
ITE
-MIC
A
KA
OLIN
PLA
GIO
CL
AS
E
K-F
ELD
SP
AR
SIL
ICA
Do
ma
in
Ern
es
tHe
nry
EH
15
4_
tsg
_tir: S
pa
tial S
um
ma
ry (B
in=
4 M
inB
in=
5%
uT
SA
T 7
.07
, Min
era
l Su
bs
et)
Dep
th (m
)
Bin % Rel. Weight
12
02
40
36
04
80
60
07
20
84
09
60
0 40 80
Min
era
l
Bio
tite
Chlo
rite-F
eM
g
Muscovite
Olig
ocla
se
Alb
ite
Orth
ocla
se
Mic
roclin
e
Quartz
Do
ma
in
120
240
360
480
600
720
840
960
m
Ore Proximal Proximal?
Distal?l
EH435
EH550
EH242 EH154
FC
4S
_M
MA
00
1_
tsg
_tir: S
pa
tial S
um
ma
ry (B
in=
4 M
inB
in=
5%
uT
SA
T 7
.07
, Min
era
l Su
bs
et)
Dep
th (m
)
Bin % Rel. Weight
12
02
40
36
04
80
60
07
20
84
09
60
0 40 80
Gro
up
EP
IDO
TE
AM
PH
IBO
LE
DA
RK
-MIC
A
CH
LO
RIT
E
OTH
ER
-ALO
H
PLA
GIO
CL
AS
E
K-F
ELD
SP
AR
SIL
ICA
Do
ma
in
FC
4S
_M
MA
00
3_
tsg
_tir: S
pa
tial S
um
ma
ry (B
in=
4 M
inB
in=
5%
uT
SA
T 7
.07
, Min
era
l Su
bs
et)
Dep
th (m
)
Bin % Rel. Weight
12
02
40
36
04
80
60
07
20
84
09
60
0 40 80
Gro
up
CA
RB
ON
ATE
AM
PH
IBO
LE
DA
RK
-MIC
A
CH
LO
RIT
E
OTH
ER
-ALO
H
PLA
GIO
CLA
SE
K-F
ELD
SP
AR
SIL
ICA
Do
ma
in
FC
4S
_M
MA
00
2_
tsg
_tir: S
pa
tial S
um
ma
ry (B
in=
4 M
inB
in=
5%
uT
SA
T 7
.07
, Min
era
l Su
bs
et)
Dep
th (m
)
Bin % Rel. Weight
12
02
40
36
04
80
60
07
20
84
09
60
0 40 80
Gro
up
PH
OS
PH
ATE
SU
LP
HA
TE
AM
PH
IBO
LE
DA
RK
-MIC
A
CH
LO
RIT
E
PLA
GIO
CLA
SE
K-F
ELD
SP
AR
SIL
ICA
Do
ma
in
Anhydrous minerals
Distal?
MMA001
MMA003
MMA002
EH435_tsg_tir: Spatial Summary (Bin=4 MinBin=5% uTSAT 7.07, Mineral Subset)
Depth (m)
Bin
% R
el.
Weig
ht
120 240 360 480 600 720 840 960
04
08
0
Group
SULPHATE
CARBONATE
AMPHIBOLE
DARK-MICA
SMECTITE
PLAGIOCLASE
K-FELDSPAR
SILICA
Domain
Summary
• Focus on building up a physical and virtual reference sample collection across the Mount Isa Province
• Support external SREP projects and drive future GSQ work
• Case studies – Ernest Henry (ongoing), Mount Elliott/SWAN next up
![Untitled-1 [] · ERNEST A. HA-MILL, Treasurer wrLTÄAM M. R, FRENCH, ... Henry Field Memorial Collection. ... The beach. Pastel](https://img.pdfslide.us/doc/110x75/5b79321e7f8b9ad77e8d049c/untitled-1-ernest-a-ha-mill-treasurer-wrltaeam-m-r-french-henry.jpg)
