Chacay Poject · IOCG Copper ore bodies José Pablo Astudillo Geólogo y MBA UCN. Location Chacay...
Transcript of Chacay Poject · IOCG Copper ore bodies José Pablo Astudillo Geólogo y MBA UCN. Location Chacay...
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Chacay Poject
An hydrothermal alteration area
possible asociated to Cretacius
porphyry Cu-Au system, Easten to
IOCG Copper ore bodiesJosé Pablo Astudillo
Geólogo y MBA UCN
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Location
Chacay Project it
located 36 km NE of
La Serena, 22 km NE
from Lambert
metalurtgical plant
(CMSG) and 10 km
from El Romeral
Mine (CMP).
Chacay project
Mine El Romeral
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Mine property
1.600 hectares
extention
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Actividades realizadas en el Proyecto Chacay
- Mine area ownership (1.600 Hectares).
- Geological mapping scale 1:5.000.
- Surface geochimestry, old mine labors and outcrops sampling.
- 310 geological mapping control points and over 250 rock sampled (diferents
geological units).
- Spectral analysis of 221 surface samples (Spectrum Geosoluciones laboratory).
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GEOLOGICAL MAPPING
310
GEOLOGICAL
MAPPING
CONTROL
POINTS
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1. HIDROTHERMAL ALTERATION
ZONE….
…Possible Cretacius porphyry Cu-Au
system.
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Hidrothermal alteration
zone
v/s
Regional Ground
magnetometry
Hidrothermal alteration
zone
2.400 x 600 m
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Plomo
> 40 ppm
Surface
Geoche-
mistery
Arsénico
> 100 ppm
Mercurio
> 5 ppm
Plata
> 2 ppm
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Oro
> 0,1 gr/ton
Cobre
> 300 ppm
Surface
Geochemistery
Molibdeno
> 25 ppm
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Spectral Analysis
VIS/NIR/SWIR
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Early Quartz vein “A-type” exposed on surface
Hidrothermal alteration zone
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Spectral Analysis
VIS/NIR/SWIR
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Proyecto Chacay
Early Quartz vein “A-type” exposed on surface
Hidrothermal alteration zone
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Características Principales
Zona de alteración hidrotermal
-Main alteration zone 2,400 meters long and
600 meters wide.
- Strong occurrence of hematite, jarosite and
gohetite on the surface, this reflects leached
zone similar to Dos Amigos, Carmen de
Andacollo, Puquios, etc.
-124 veins of quartz with limonites on
surface.
- Evidence of pyrite, arsenopyrite in veinlets
and disseminated with limonites.
-Early quartz veins similar to those found in
other copper porphyries.
-Evidences of copper oxides (malachite and
chrysocolla) on the surface.
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-Evidences of Pyrite boxworks, triangular
texrtures similars ad Galen a las de galena.
-Occurrence of okeous silica (vuggy silica),
dog quartz tooth, polydirectional limonite
veinlets.
- Areas with alteration of albita that destroys
the original texture of the rock.
- Sericite quartz alteration that destroys the
texture of box rock.
-Alteration of silica that destroys the texture
of box rock.
-Tourmaline alteration in veinlets.
-Numerous structures that make up an
extensional duplex.
Hidrothermal alteration zone
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-Possible presence of alunite shows an
advanced argillic event within the project.
-Old artesanal labored gold veins
- Main geochemical anomalies recognized:
Plomo ( Pb) > 40 ppm
Arsénico (Ar) > 100 ppm
Mercurio (Hg) > 5 ppm
Plata (Ag) > 2 ppm
Oro (Au) > 0,1 gr/ton
Molibdeno (Mo)> 25 ppm
Cobre (Cu)> 300 ppm
Zona de alteración hidrotermal
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2. Copper and Gold projects
IOCG enviroment. Eastern
Hidrothermal alteration zone
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Geological surface mapping
Malachite - Chrysocolla
1:10.000
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Copper oxides
v/s
Regional grownd
magnetometry
Malachite - Chrysocolla
1:10.000
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Copper Oxide main target areas
0 500 m
1. Vaquita Flora
2. Catana
3. Vetas Sur
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1. Vaquita Flora.
Continuous copper oxides outcrops
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Surface sampling and resources potential, Vaquita Flora
Proyecto Recursos potenciales % CuS
Vaquita flora óxidos 858.600 0,96
1. Vaquita Flora
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East view; Important copper oxides outcrops
1. Vaquita Flora
Copper
oxide
zone
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Potencial de sulfuros.
Proyecto Recursos potenciales % CuS
Vaquita flora sulfuros 5.151.000 1,18
1. Vaquita Flora
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Surface sampling and sulphide potential
Proyecto Recursos potenciales % CuT AuT
Catana 678.000 3,1 0,29
2. Catana
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3. Suthen veins
Au- Cu vein Stock,
Southeast area of the
hidrothermal
Alteration zone.
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Thanks