International PBX Ventures Ltd.: ZTEM Airborne Survey Confirms Large Porphyry Targets at Tierra de Oro Gold-Copper Property, ...
24 Agosto 2011 - 9:32AM
Marketwired
International PBX Ventures Ltd. ("the Company") (TSX VENTURE: PBX)
today announced the results of a ZTEM Airborne Geophysical Survey
("the Survey") completed over the Company's Tierra de Oro (TDO)
copper gold property. The Tierra de Oro Property is 100% owned by
Minera IPBX Limitada, a wholly-owned Chilean subsidiary of
International PBX Ventures Ltd. of Vancouver. It consists of twenty
one fully constituted exploitation concessions and nine exploration
concessions totalling 6,381 hectares.
At the Tierra de Oro Property the largest potential lies in the
similarity of geological setting and mineralization type to that
found in the Candelaria Mine (greater than 400 million tonnes @
0.98% Cu and 0.25 g/t gold). The Candelaria area was a blind type
deposit that was discovered by drill testing and IP geophysical
anomalies in an area of small copper oxide showings. The TDO
Property is 46 kilometres south of the mining city of Copiapo, and
Freeport-McMoRan's large copper-gold producing Candelaria Mine is
situated about 20 kilometres south of Copiapo.
The TDO property comprises 63 square kilometers, and is located
in Region 3 in Chile. It hosts a shattered granitic body with
stockwork type copper-gold-mineralized shears as evidenced by
extensive artisanal pits and workings. The granitic body is
oxidized to depths of around 100 metres and may thus be amenable to
open pit leaching operations in areas of concentrated
structure.
To date, exploration programs have identified, mapped, sampled,
trenched and drilled, to varying degrees, sixteen large gold
targets.
ZTEM AIRBORNE SURVEY
Geotech Ltd., Airborne Geophysical Surveys of Aurora, Ontario,
was commissioned, in January 2011, to conduct the ZTEM Survey
across the entire property in order to map lithological variations
and identify structural trends that may relate to observed
mineralization in areas that had not been previously explored. The
ZTEM system was developed in 2007 and has become one of the leading
airborne geophysical systems in use today and is particularly
suited to identifying large conductive ore bodies. The ZTEM system
is renowned for its deep penetration, high spatial resolution and
ability to detect and differentiate weak electro-magnetic anomalies
at depths up to 1,500 metres.
ZTEM RESULTS
The ZTEM survey has identified two main magnetic anomalies of
significant size on the Tierra de Oro property each associated with
large copper-gold and copper-silver mineralized zones.
THE CHANCHERO COPPER-GOLD ZONE
The Chanchero copper-gold mineralized zone covers a 3km x 2km
area with anomalous gold, copper and molybdenum copper values in
soils which are coincident with gold and copper bearing porphyry
style phyllic alteration surrounded by propylitic alteration.
Sample results from old workings and outcrops in this area returned
values ranging from 0.5 g/t to 16.7 g/t gold. The gold-copper
mineralization is associated with a coincident IP/Resistivity-low
anomaly elongated NE-SW, 2,800 meters long by 1,700 meters wide and
open at depth. The IP and resistivity inversion models suggest that
the sulphide mineralization and alteration continues to a depth of
more than 300m where metal zonation within the deeper parts of the
porphyry system may be more chalcopyrite rich.
The ZTEM survey has mapped NE-SW structures on the property
which are part of the regional Atacama fault system. The Atacama
fault system is known to host world class deposits in Chile.
The ZTEM airborne survey located a significant 3km by 2km
magnetic intrusive like body immediately west of the multi
coincident Chanchero anomalies. Inversion modeling shows this
magnetic body is open at depth.
In addition to the Chanchero porphyry target, the property
contains skarn occurrences (Fe-Cu Skarn zone) which occur over the
southern portion of the interpreted intrusive. The Fe-Cu Skarn zone
is 600m wide and 1,600m long and is likely associated with the
interpreted magnetic intrusive. This zone has a coincident
copper-gold geochemical anomaly, and trenching of one part of this
zone has returned gold values of up to 2.2 g/t Au over a 42m
width.
The newly identified magnetic intrusive body together with the
multi-coincident geological-geochemical-geophysical anomalies
strongly suggests that this interpreted intrusive identified by the
ZTEM survey may be the source of gold copper mineralization and
will be the focus of a planned drill program.
LOS LOMITAS COPPER SILVER ZONE
The ZTEM airborne survey has located a second large magnetic
body 3km by 2km which is also interpreted as an intrusive.
This magnetic feature is coincident with a large copper
geochemical soil anomaly (2kms x 1.5kms) and sampling from small
scale open cuts and underground operations in the area returned
values ranging between 0.7% Cu to 2.5% copper with 5 to 80 g/t
silver over thicknesses of 2 to 30 meters. Further sampling and
trenching is planned for this copper-silver mineralized zone.
SUMMARY
The ZTEM survey was very successful in identifying splays of the
Atacama fault system passing through the Tierra de Oro property
which may be the controlling structures of mineralization on a
regional scale. The survey also identified two magnetic bodies of
significant size interpreted as intrusives and possibly being the
sources of copper-gold-silver mineralization within the property
itself.
"We are delighted with the overall success of the ZTEM survey,
not only on our Tierra de Oro project but on the Copaquire and
Sierra Pintada projects as well," said George Sookochoff, President
& CEO of PBX. "Management is enthused that the company has
identified new opportunities in the gold sector allowing for the
building of additional shareholder value."
QA/QC
Geophysical Consultant Mr. Sergio Espinosa, Ph.D., P.Geo. has
reviewed and approved the scientific and technical information
contained in this release.
ON BEHALF OF THE BOARD OF DIRECTORS OF INTERNATIONAL PBX
VENTURES LTD.
George Sookochoff, President & CEO
We seek safe harbour.
Neither the TSX Venture Exchange nor its Regulation Services
Provider (as that term is defined in the policies of the TSX
Venture Exchange) accepts responsibility for the adequacy or
accuracy of this release.
Contacts: International PBX Ventures Ltd. George Sookochoff
President & CEO (604) 681-7748 or Toll Free: 1-877-681-1154
(604) 681-0568 (FAX) www.internationalpbx.com
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