pimentón a new cu-au porphyry deposit in farellones · 2015. 4. 8. · 15 pimentón project...
TRANSCRIPT
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1 Pimentón Project –June 6, 2006
PimentónA new Cu-Au porphyry deposit in Farellones
This report by Rio Tinto dated June 6, 2006 was prepared as an Executive Summary
and is not compliant with National Instrument 43-101
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2 Andean District - Chile Exploration June 6, 2006
Summary
•Exploration was carried out under an LOU between SAGCand Rio Tinto, signed in March 2005
• 8 holes were drilled totalling 3891m of diamond drilling
• A very well mineralised copper-gold porphyry system wasdiscovered
• Best results include 279m 0.4% Cu - 0.43g/T Au and 70m0.46% Cu - 0.49g/T Au
• Results of exploration programme conducted by Rio Tintohave added a significant value to the Pimentón project
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3 Pimentón Project –June 6, 2006
Pimentón
0 m 500
N
3
14
Camp
Plant
86m @ 0.15% Cu &0.06g/t Au, from 11m
136m @ 0.17% Cu &0.04g/t Au, from 627m
34m @ 0.13% Cu &0.14g/t Au, from 188m
2
56
8
7
8
Phyllic
LegendLithology
Tuffs
PotassicAlteration
Propylitic
Tourmaline breccia
Proposed drill holes
Diorite porphyry
Auriferous quartz veins
Volcaniclastics
RT diamond drill holes
Other diamond drill holes
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4 Pimentón Project –June 6, 2006
0 m 500
N
Volcaniclastics
Moraine
Pimentón Valley Valle Hondo
Intermineral
porphyry
Early porphyry
Tourmalinebreccia
Late porphyry
Lithology
Other diamonddrill holes
RT diamonddrill holes
6 42
Faul
t
626m
685m
465m
70m @ 0.46% Cu &0.49g/t Au, from 100m
279m @ 0.4% Cu &0.43g/t Au, from 312m
34m @ 0.13% Cu &0.14g/t Au, from 188m
PimentónSchematic Cross Section
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5 Pimentón Project –June 6, 2006
Intermineral diorite porphyry
Late diorite porphyry
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6 Pimentón Project –June 6, 2006
Pimentón – Hole 4 330mCu & Au mineralisationin potassically alteredearly diorite porhyry0.53% Cu – 0.56 g/t Au
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7 Pimentón Project –June 6, 2006
Pimentón Hole 6 128mEarly diorite porphyrywith A-veinlets andchalcopyrite – bornitemineralisation
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8 Pimentón Project –June 6, 2006
Intermineraldioriteporphyry
Early diorite porphyry
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9 Pimentón Project –June 6, 2006
Early diorite porphyryIntermineral Dioriteporphyry
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10 Pimentón Project –June 6, 2006
Early diorite porphyryIntermineral dioriteporphyry
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11 Pimentón Project –June 6, 2006
Volcaniclastics
Moraine
M 5000
Valle Pimentón Valle Hondo
Intermineraldiorite porphyry
Early dioriteporphyry
Tourmalinebreccia
Late dioriteporphyry
Lithology
Other diamonddrill holes
RT diamonddrill holes
6 42
Faul
t
626m
685m
465m
70m @ 0.46% Cu & 0.49g/t Au, from 100m (0.8% Cu equivalent)
279m @ 0.4% Cu & 0.43g/t Au, from 312m (0.7% Cu equivalent)
34m @ 0.13% Cu & 0.14g/t Au, from 188m
Volcaniclastics
Moraine
M 5000
Valle Pimentón Valle Hondo
Intermineraldiorite porphyry
Early dioriteporphyry
Tourmalinebreccia
Late dioriteporphyry
Lithology
Other diamonddrill holes
RT diamonddrill holes
6 42
Faul
t
626m
685m
465m
70m @ 0.46% Cu & 0.49g/t Au, from 100m (0.8% Cu equivalent)
279m @ 0.4% Cu & 0.43g/t Au, from 312m (0.7% Cu equivalent)
34m @ 0.13% Cu & 0.14g/t Au, from 188m
MODELO GEOLOGICOPREDICTIVO
MODELO GEOLOGICO CONINFORMACION DE NUEVOSSONDAJES
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12 Pimentón Project –June 6, 2006
Mesotermal
Pórfido Cu
Epitermal
Argilica-Seric
A
Hm
B
Jr
C
Sericita
Sericita verde
Leached
Cp(+)
Argilica I
Biotita-FK-mgt
Biotita
Cp-Bn
BxTermal
Vetas QzAu
Cc/PyE.Sec.
Vetillas D (Py)
Vetas AuEsp-Cp
Calc-EpBr act-Qz-Ep-Esp-mgt
Vetilla B (Mo)
StockworkVetilla A
Mesotermal
Pórfido Cu
Epitermal
Argilica-Seric
A
Hm
B
Jr
C
Sericita
Sericita verde
Leached
Cp(+)
Argilica I
Biotita-FK-mgt
Biotita
Cp-Bn
BxTermal
Vetas QzAu
Cc/PyE.Sec.
Vetillas D (Py)
Vetas AuEsp-Cp
Calc-EpBr act-Qz-Ep-Esp-mgt
Vetilla B (Mo)
StockworkVetilla A
Argilica-Seric
A
Hm
B
Jr
C
Sericita
Sericita verde
Leached
Cp(+)
Argilica I
Biotita-FK-mgt
Biotita
Cp-Bn
BxTermal
Vetas QzAu
Cc/PyE.Sec.
Vetillas D (Py)
Vetas AuEsp-Cp
Calc-EpBr act-Qz-Ep-Esp-mgt
Vetilla B (Mo)
StockworkVetilla A
Pórfido DioríticoIntermineral
Pórfido DioríticoTemprano
Vt qz A truncada
Pórfido DioríticoIntermineral
Pórfido DioríticoTemprano
Vt qz A truncada
Pórfido DioríticoTemprano
Vt qz A – cp
Pórfido DioríticoTemprano
Vt qz A – cp
Pórfido DioríticoIntermineral
Pórfido DioríticoTardío - sin vt qz
Pórfido DioríticoIntermineral
Pórfido DioríticoTardío - sin vt qz
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13 Pimentón Project –June 6, 2006
FARELLONES
Unidad LitologíaColumna
Fm.A
C
BToba cristalina-lítica
Andesita porfídica, aglomerados, areniscas tobáceas y andesita grano fino
Toba soldada
Andesita porfídica gruesas y afaníticacon intercalaciones brechas volcánicas
FARELLONES
Unidad LitologíaColumna
Fm.A
C
BToba cristalina-lítica
Andesita porfídica, aglomerados, areniscas tobáceas y andesita grano fino
Toba soldada
Andesita porfídica gruesas y afaníticacon intercalaciones brechas volcánicas
B
C
A
B
C
A
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14 Pimentón Project –June 6, 2006
3
14
Camp
Plant
M 5000
2
56
8
7
3
14
Camp
Plant
M 5000
2
56
8
7
SONDAJES PIMENTON
2005: 3 POZOS DDH – 1.822,9 m
2006: 5 POZOS DDH – 2.068,2 m
TOTAL 3.891,1 m
RIO TINTO
PIMENTON
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15 Pimentón Project –June 6, 2006
CONTROL DE CALIDAD DE STANDARD ALTAR 1PM-DD-004 PROYECTO PIMENTON 2006
80009000
1000011000
1 3 5 7 9 11
BATCH
Cu
PPM
RANGO SUP ERIOR (VALOR 10007 P P M)RANGO INFERIOR (VALOR 9237 P P M)STANDARD
CONTROL DE CALIDAD DE STANDARD ALTAR 2 PM-DD-004 PROYECTO PIMENTON 2006
4000
5000
6000
2 4 6 8 10 12
BATCH
Cu P
PM
RANGO SUP ERIOR (VALOR 5282 P P M)RANGO INFERIOR (VALOR 4779 P P M)STANDARD
CONTROL DE DUPLICADO PM-DD-004 PROYECTO PIMENTON
0
5000
10000
1 2 3 4 5 6 7 8 9 10 11 12
BATCH
Cu
PPM
DUPLICADO PADRE
DUPLICADO HIJO
CONTROL DE CALIDAD DE STANDARD ALTAR 1 PM-DD-006 PROYECTO PIMENTON
8 0 0 0
9 0 0 0
10 0 0 0
110 0 0
1 3 4 6
B A TC H
Cu
PPM
RANGO SUP ERIOR (VALOR 10007 P P M)RANGO INFERIOR (VALOR 9237P P M)STANDARD
CONTROL DE CALIDAD DE STANDARD ALTAR 2 PM-DD-006 PROYECTO PIMEMTON
4000
5000
6000
2 5 7B A TC H
Cu
PPM
RANGO SUP ERIOR (VALOR 5282 P P M)
RANGO INFERIOR (VALOR 4779 P P M)
STANDARD
CONTROL DE CALIDAD DUPLICADO PM-DD-006 PROYECTO PIMENTON
02000400060008000
10000
1 2 3 4 5 6 7
BATCH
Cu
PPM
DUP LICADO P ADRE
DUP LICADO HIJ O
CONTROL DE CALIDAD DE STANDARD ALTAR 1PM-DD-004 PROYECTO PIMENTON 2006
80009000
1000011000
1 3 5 7 9 11
BATCH
Cu
PPM
RANGO SUP ERIOR (VALOR 10007 P P M)RANGO INFERIOR (VALOR 9237 P P M)STANDARD
CONTROL DE CALIDAD DE STANDARD ALTAR 2 PM-DD-004 PROYECTO PIMENTON 2006
4000
5000
6000
2 4 6 8 10 12
BATCH
Cu P
PM
RANGO SUP ERIOR (VALOR 5282 P P M)RANGO INFERIOR (VALOR 4779 P P M)STANDARD
CONTROL DE DUPLICADO PM-DD-004 PROYECTO PIMENTON
0
5000
10000
1 2 3 4 5 6 7 8 9 10 11 12
BATCH
Cu
PPM
DUPLICADO PADRE
DUPLICADO HIJO
CONTROL DE CALIDAD DE STANDARD ALTAR 1 PM-DD-006 PROYECTO PIMENTON
8 0 0 0
9 0 0 0
10 0 0 0
110 0 0
1 3 4 6
B A TC H
Cu
PPM
RANGO SUP ERIOR (VALOR 10007 P P M)RANGO INFERIOR (VALOR 9237P P M)STANDARD
CONTROL DE CALIDAD DE STANDARD ALTAR 2 PM-DD-006 PROYECTO PIMEMTON
4000
5000
6000
2 5 7B A TC H
Cu
PPM
RANGO SUP ERIOR (VALOR 5282 P P M)
RANGO INFERIOR (VALOR 4779 P P M)
STANDARD
CONTROL DE CALIDAD DUPLICADO PM-DD-006 PROYECTO PIMENTON
02000400060008000
10000
1 2 3 4 5 6 7
BATCH
Cu
PPM
DUP LICADO P ADRE
DUP LICADO HIJ O
CONTROL DE CALIDAD
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16 Pimentón Project –June 6, 2006
Volcaniclastics
Moraine
M 5000
Valle Pimentón Valle Hondo
Intermineraldiorite porphyry
Early dioriteporphyry
Tourmalinebreccia
Late dioriteporphyry
Lithology
Other diamonddrill holes
RT diamonddrill holes
6 42
Faul
t
626m
685m
465m
70m @ 0.46% Cu & 0.49g/t Au, from 100m (0.8% Cu equivalent)
279m @ 0.4% Cu & 0.43g/t Au, from 312m (0.7% Cu equivalent)
34m @ 0.13% Cu & 0.14g/t Au, from 188m
SECCION LITOLOGIA-ESTRUCTURA
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17 Pimentón Project –June 6, 2006
Cp - Py (~0.2% Cu)
Py (> Bn(> 0.7% Cu)
Cp > Py - Bn(~0.5% Cu)
Mineralisation
6 42
626m685m
465m
Other diamonddrill holes
RT diamonddrill holes
70m @ 0.46% Cu & 0.49g/t Au, from 100m (0.8% Cu equivalent)
279m @ 0.4% Cu & 0.43g/t Au, from 312m (0.7% Cu equivalent)
34m @ 0.13% Cu & 0.14g/t Au, from 188m
SECCION ZONA MINERAL
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18 Pimentón Project –June 6, 2006
B
C
A
K
S
P
S-C
Ca-Na
C
ZONA DE ALTERACION
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19 Pimentón Project –June 6, 2006
HOLE HOLE PM-DD-004 PM-DD-005
FROM TO LARGE m Cu% Au gr/tn FROM TO LARGE m Cu% Au gr/tn83.7 681.15 597.45 0.28 0.32 69 332 263 0.12 0.10
INCLUYE INCLUYEFROM LARGE m Cu% Au gr/tn FROM LARGE m Cu% Au gr/tn148.5 56 0.30 0.31 69 44 0.20 0.22259 49 0.22 0.22 151 20 0.32 0.15312 279 0.40 0.43
(312) 385 121 0.44 0.46(312) 553 35 0.44 0.46
591 37 0.22 0.25600 26 0.23 0.25
HOLE PM-DD-006
FROM TO LARGE m Cu% Au gr/tn95.5 464 368.5 0.23 0.26
INCLUYEFROM LARGE m Cu% Au gr/tn
100 72 0.46 0.48(100) 106 58 0.50 0.52
224 34 0.21 0.21280 20 0.23 0.27388 48 0.33 0.43
GRADE AVERAGE
GRADE AVERAGE
GRADE AVERAGE
3
14
Camp
Plant
M 5000
2
56
8
7
3
14
Camp
Plant
M 5000
2
56
8
7
RESULTADOS DE LEYES Cu - Au
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20 Pimentón Project –June 6, 2006
Abundancia relativa % Leyes Metraje (m) magnetita calcopirita bornita % Cu gr/tn Au
vetillas Qz
197 4 2 a 3 0.27 0.38 B 330 2 a 3 0.31 0.38 B 357 3 a 3,5 1,5 a 2 traza 0.33 0.31 A y B 419 3 a 4 2,5 a 3 0.30 0.40 EB-B-D575 4 a 5 1,5 traza 0.40 0.47 EB-A-B
Cp - Py (~0.2% Cu)
Py (> Bn(> 0.7% Cu)
Cp > Py - Bn(~0.5% Cu)
Mineralisation
6 42
626m685m
465m
Other diamonddrill holes
RT diamonddrill holes
70m @ 0.46% Cu & 0.49g/t Au, from 100m (0.8% Cu equivalent)
279m @ 0.4% Cu & 0.43g/t Au, from 312m (0.7% Cu equivalent)
34m @ 0.13% Cu & 0.14g/t Au, from 188m
PM-DD-004
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21 Pimentón Project –June 6, 2006
22 20 18 16 14 12 10 8 6 4 2 0 Ma
Volcanics and plutons 22-12 MaLate porphyries >6 Ma
BrecciasK-alteration10-6.9 Ma
Los Pelambres
Los Bronces- Rio Blanco
Volcanics 21-14 Ma
Plutons 20-7.6 Ma Breccias 7.3-4.2 Ma
K-alteration>5.4 Ma
Late porphyries 5.2-3.9 Ma
El TenienteVolcanics 14-5.6 Ma
Plutons 8-7 Ma
Alteration>4.4 Ma
Late dykes 3.8-1.8 Ma
Braden BrecciaTeniente Porphyry4.6-4 Ma
Pimentón
Sericite10.37 +/- 0.19 Ma
Secondary Biotite9.94 +/- 0.14 Ma
22 20 18 16 14 12 10 8 6 4 2 0 Ma22 20 18 16 14 12 10 8 6 4 2 0 Ma
Volcanics and plutons 22-12 MaLate porphyries >6 Ma
BrecciasK-alteration10-6.9 Ma
Los Pelambres
Los Bronces- Rio Blanco
Volcanics 21-14 Ma
Plutons 20-7.6 Ma Breccias 7.3-4.2 Ma
K-alteration>5.4 Ma
Late porphyries 5.2-3.9 Ma
El TenienteVolcanics 14-5.6 Ma
Plutons 8-7 Ma
Alteration>4.4 Ma
Late dykes 3.8-1.8 Ma
Braden BrecciaTeniente Porphyry4.6-4 Ma
Pimentón
Sericite10.37 +/- 0.19 Ma
Secondary Biotite9.94 +/- 0.14 Ma
PimentónPimentón
DisputadaDisputadaDisputada
PelambresPelambresPelambres
Teniente
Lowest extraction level 1983 mts
Mineralisation drilled to at least 1200 mts TenienteTeniente
Lowest extraction level 1983 mts
Mineralisation drilled to at least 1200 mts
3000 m.a.s.l
4000 m.a.s.l
3500 m.a.s.l
2500 m.a.s.l
2000 m.a.s.l
1500 m.a.s.l
3000 m.a.s.l
4000 m.a.s.l
3500 m.a.s.l
2500 m.a.s.l
2000 m.a.s.l
1500 m.a.s.l
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22 Andean District - Chile Exploration June 6, 2006
Conclusions and recommendations
• A large Cu-Au porphyry deposit was identified in thePimentón valley under relatively shallow moraine
• This new Cu-Au deposit is one of the most significantdiscoveries in the Farellones belt in the last years
• Although the Cu and Au grades can be consideredsubeconomic at this stage, there is potential for a highgrade core in depth
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23 Andean District - Chile Exploration June 6, 2006
Conclusions and recommendations (cont.)
• It is recommend to drill a few deep holes in the mainvalley to evaluate the vertical extension of mineralisation
• Potential resources of several hundreds million tonnesis thought to be a realistic scenario
• Results of exploration programme done by Rio Tintohave added a significant value to the Pimentón projectand subsequently to their stakeholders