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Discovery History of Sierra Gorda, Antofagasta Province, Chile:

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Discovery History of Sierra Gorda, Antofagasta Province, Chile:
Discovery History of Sierra Gorda, Antofagasta Province, Chile: Implica>ons for Successful Explora>on in Mature Terranes. Patrick Fahey – Quadra Mining, Ltd (Currently Copper Discovery Ventures, Ltd) Jack Currie – KGHM Interna>onal Jorge Maya-­‐Marin – KGHM Interna>onal Jaime Diaz-­‐ – KGHM Interna>onal Gregory McKelvey – Copper Discovery Ventures, Ltd The Sierra Gorda Mine Discovered in July 2006 by Quadra Mining Ltd. (now KGHM Intl, Ltd) 1,270 M tonnes at 0.52% CuEQ at 0.2% CuEQ Current reserve: M tonnes at 0.2% CuEQ M, I, and I: 2,917 Sierra Gorda Project Sierra Gorda !"#$$%&'($)%&*+,-./0.&1%2&
3$(45&6%478&%9)&:";;#8<&=,,/&
Spence from Sierra Gorda. Mature terranes are the future of exploraKon; and for all pracKcal purposes the future is now… Sierra Gorda & Surroundings Major discoveries since 90’s El Abra Chuqui Alejandro Jales Opache Sierra Gorda Calama Spence Tesor Tesoro NE Esperanza o Telegrafo Pilar CenKnela Polo Sur Fortuna de Cobre Antofagasta Lomas Bayas San Cristobal 100 KM •  Paleocene-­‐Eocene: –  Lomas Bayas -­‐ Oxide –  Spence -­‐ Supergene sulfide/
oxide –  Sierra Gorda – Hypogene sulfide •  Late Eocene-­‐Oligocene: –  Tesoro – ExoKc –  Esperanza -­‐ Hypogene –  Esperanza Sur (Telegrafo) –
Hypogene and supergene –  Encuentro -­‐ Oxide –  Polo Sur – Hypogene Sierra Gorda District 450000
452500
455000
457500
460000
462500
465000
467500
470000
472500
475000
477500
480000
7490000
7490000

25º
25º
7487500
20º
20º
7487500
2500
2500 metros.
metros.
75º
75º
30º
30º
70º
70º
65º
65º
7485000
7485000
10º
10º
7482500
7482500
Sierra Gorda 70º
70º
30º
30º
65º
65º

Paulina
Paulina


Jefecito
Jefecito
Mina
Mina
Maria
Santa
Santa Maria
II EE
SS
Mina
Mina Rosario
Rosario



AA
GG
OO
RR
DD
10º
10º
AA
MINA
MINA
SPENCE
SPENCE
Spence 80º
80º
85º
85º
25
25

La
La Tola
Tola
Faride
Faride
RR
San
San Jorge
Jorge
7477500
7477500

Amigos
Tres Amigos
Tres

Mina
Mina Gregoria
Gregoria
RR
7480000
7480000
CERRO
CERRO
DOMINADOR
DOMINADOR

CERRO
CERRO CHARQUEADO
CHARQUEADO
Doña
Doña Paulina
Paulina
Elisa
Elisa

PAMPA
PAMPA DEL
DEL INDIO
INDIO MUERTO
MUERTO
Millonaria
Millonaria
Millonaria

7475000
PÓRFIDOS
SIERRA GORDA
7475000
75
75
La Pobreza
Pobreza
 La
EL
EL SALAR
SALAR

Elba
Elba

Carmen
Carmen

80º
80º
80º
80º
80º
80º
Santiaguina
Santiaguina
O
DO
A
AD
UEE
QU
RQ
AR
HA
C
CH
7472500
7472500
Salvadora
Salvadora
A
A
MPP
AM
PPA
80°
80°
Pdte.
Pdte. Montt
Montt
Pdte. Balmaceda
Balmaceda
Pdte.
Edna
Edna
Angelina
Angelina
Blanca
Blanca

Catalina
Catalina
Pdte.
Pdte. Bulnes
Bulnes

Etna
Etna
55º
55º
Sta. Rosa
Rosa
Sta.
80º
80º
BAYITO
BAYITO
Unión Minera
Minera
Unión
Minera
Unión
Minera
Unión
Minera
Unión
Brasilia
Brasilia
Brasilia

Q
Que
uebr
brad
adaa
Casucha
Casucha
Casucha
Casucha
Casucha
Casucha
Laurita
Laurita
Laurita 
Laurita
Laurita
Grupo Cuatro
Cuatro Pies
Pies
Grupo
Cuatro
Pies
Grupo
Cuatro
Pies
Grupo
Cuatro
Pies
Grupo

San Francisco
Francisco
San
Francisco
San
Francisco
San
Francisco
San
Río Tinto
Tinto
Río
Tinto
Río
Río
Tinto
Río
Río Tinto
Tinto
de
de
lo
loss
A
Arr
rrie
iero
ross
7470000
7470000
Grupo
Grupo
Sierra
Sierra Gorda
Gorda
•  Located on E side of batholith against Mz andesites •  Late stage porphyries and tourmaline breccias cut batholith and wall rocks •  Much of the project area was covered by colluvium Encumbrada
Encumbrada
Encumbrada
 
Andacollo
Andacollo
Andacollo
AC
UE
DU
CTO
SIERRA
SIERRA GORDA
GORDA

Jerusalén
Jerusalén
Jerusalén

7467500
7467500
Mina
Mina
Mina
Mina
López
López
Mina
Mina Abandonada
Abandonada
CERROS
CERROS
BELLA
BELLA ESPERANZA
ESPERANZA

Mina
Copucha

CAMPAMENTO
CAMPAMENTO
Grupo
Grupo LA
LA PALOMA
PALOMA
Jorge
San
San Jorge
7465000
AC
UE
DU
CTO
7465000
75º
75º
 Bello
Bello Cambio
Cambio

PAMPA
PAMPA LA
LA PALOMA
PALOMA
10º
10º

La
La Compañía
Compañía
80º
80º
7462500
7462500

SILICA FLUX.
Porvenir
Porvenir
EX
EX OFICINA
OFICINA
ACONCAGUA
ACONCAGUA
Grupo
Codiciada
7460000
Doña
Doña Nato
Nato


7460000



80
80
85
85
A
C
U
ED
U
C
TO
7457500
7457500
??
??
7455000
7455000
7452500
2.5
2.5
7452500
00
55
kilometers
kilometers
450000
452500
455000
457500
460000
462500
465000
467500
470000
472500
475000
477500
480000
•  MineralizaKon is 57.5 to 60 ma •  Spence is slightly younger & shorter lived Sierra Gorda Pre-­‐2000 ~220 M tonnes @0.53% Sierra Gorda -­‐ Before Quadra 7,475,000 N
7,473,000 N
7,471,000 N
ALLUVIUM
468,000 E
466,000 E
464,000 E
462,000 E
7,477,000 N
Sierra Gorda Quadra 2004 Sierra Gorda-­‐Quadra 2005 Sierra Gorda -­‐ Before Quadra 7,475,000 N
7,473,000 N
7,471,000 N
ALLUVIUM
468,000 E
466,000 E
464,000 E
462,000 E
7,477,000 N
1448 Cu Bench >0.2 % Cu 500 m 1650 bench >0.2% QSG06-281
Sect 7473400 N
1
40
RC
SI1
8
SI2
SI25
4
SI2
0
S0
73
S0
74
S0
58
S0
S072
57
7
S1
13
QSG06-281
4
S0
11
4
4-
7
m
83
1
S0
7
18
0
m
24
0
2
26
m 2
97
m
S1
21
0
m
SM
163
QS
GR
C
QSG06-­‐281 C
GR
QS
m
6
22
466500
m
15 15
0m 0m
15
6
2
S1
5
m
70
0
4-
13
0
466000
C
GR
QS
6
09
21m
465500
0
S0
S0
7
5-9
6
5-9
9m
C
GR
QS
C
GR
QS
9m
E05
E04
93m
E03
E02
E01
9m
465000
QS
G
464500
S0
0
464000
5-6
4
463500
m
m
24
0
m
25
1
4
23
m
m
?
?
302
m
58
0m
?
1448 Cu Bench >0.2 % Cu 500 m 1650 bench >0.2% 1
40
RC
QS
G
SI1
8
SI2
0
SI2
SI25
4
S1
13
S0
58
S0
S072
57
S0
73
S0
74
4
2
26
m 2
97
m
1
S0
7
S1
m
0.4
18
0
21
0
m
24
0
SM
163
QS
GR
C
4
4-
2
QSG06-297
m
m
6
22
QSG06-281
7
m
83
15 15
0m 0m
15
6
466500
QSG06-­‐281 RC
SG
Q
S1
5
m
70
0
4-
13
0
466000
C
GR
QS
6
09
21m
465500
0
S0
6
5-9
7
5-9
S0
C
GR
QS
C
GR
QS
9m
465000
E05
E04
93m
9m
464500
7
464000
E03
E02
E01
9m
Sect 7473400 N
S0
11
463500
5-6
4
00
QSG06-281
S0
0
QSG06-­‐281 242 to 580 m – 338 m 1.05% Cu 0.013% Mo 0.2 g/t Au m
m
24
0
m
25
1
m
?
?
302
m
?
4
281 zone Sierra Gorda 2007-­‐2008 Sierra Gorda What Worked and Why What Worked and Why: Geology “Ore deposits are rocks.” Eric S. Cheney What Worked and Why: Geologic Team Hector Araya Greg McKelvey Steve Shaver Jack Currie Luis Jaime Diaz Valdebenedito Julio Rivera Jorge Maya Unknown Josh Coder Scoo Manske What Worked and Why: Management • 
• 
• 
• 
• 
Bill Mykatyn-­‐CEO Paul Blythe-­‐President Jack Miller-­‐COO Derek White-­‐CFO Russell Alley-­‐President, Minera Quadra Ltda. What Worked and Why: Regional Geology/ Project Data Base What Worked and Why: Aggressive Drilling and Quick Followup “Go big or go home.” Jack Currie, Project Manager – when he submioed a 2006 budget for $12 million (we got $4 million) “Hmmph” Jorge Maya, Chief Geologist – when I told him he could only have 250 meters for hole 281 “Hasta bornita o magma.” ([email protected] bornite or magma) Jaime Diaz, Senior Geologist, when I asked how deep we should drill aper DH 281 “Go metric, it’s much easier to propose a 900 m drill hole without a quaver in your voice than to ask for a 3000 footer.” Pat Fahey, VP, ExploraKon What Worked and Why: Luck “If you have your choice between being smart or being lucky – take luck – it’s way ahead every @me.” Stewart R. Wallace, 1974 Jackling Award Lecture "The Henderson Ore Body-­‐Elements of Discovery, ReflecKons" THE MOST CriKcal Factor: People “Where oil is first found, in the final analysis, is in the minds of men.” Wallace Prao, 1951… The Point of Cheney “Fest” People -­‐ Mentors “Where oil Ore is first found, in the final analysis, is in the minds of men and women.” “Ore is found in the minds of men and women.” As clarified and clipped by a hypotheKcal E.S. Cheney edit… Thanks Eric, for insKlling the skills and passion for geology and discovery into students through a long and worthy career. END 
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