11 July 2012
Encouraging Geophysics Results at Carachapampa, Chile ASX Code: CDB Executive Summary• Carachapampa geophysics results are highly encouraging. The central anomaly is co- incidental with strongest results from scout drilling program performed earlier this year. The survey also defined a very large and unclosed chargeability anomaly to the northeast of the alteration system that is yet to be tested.
• Drilling holes now sighted: The IP survey has provided excellent focus for the next stage of drilling that is anticipated to involve 5,000m of diamond or pre-collared diamond drilling.
Carachapampa Geophysics
Condor Blanco Mines Limited ("Condor Mines", "the Company")
is highly encouraged by results of an Induced Polarisation
("IP") geophysical survey completed over the Carachapampa
high sulphidation epithermal project in the Maricunga Belt in
northern Chile. The survey was undertaken after the strong
initial scout drilling program results as announced on 13
March 2012.
The drilling not only returned excellent results, but also
provided preliminary information on the controls on the
mineralisation. As announced, the mineralisation is related
in part to WNW and NNE structures that are occupied by
massive silica and/or hydrothermal breccias within the host
dacitic volcanics. Condor Mines' current interpretation is
that there are two different structural orientations that
relate to two mineralising events. Mineralisation is also
associated with significant disseminated pyrite.
It was considered that IP would be an effective method to map
areas of co-incident chargeability (sulphides) and
resistivity (silicification) which would guide further
drilling on this very large alteration system. It was
anticipated that IP would also cost-effectively test large
areas of the alteration system that are obscured by thin
volcanic ash cover. Accordingly a 24 line kilometre IP survey
was initiated in April with 10 lines, 2,400m in length spaced
200m apart, oriented SE-NW (see Figure 1). The elevation of
the project area ranges from approximately 3,800m ASL to
3,900m ASL. The equipment used in the survey together with
the resistive nature of the ground has resulted in reliable
data below the surface down to an elevation of about 3,600m
(i.e. 250-300m below the surface). "Background" chargeability
was found to be between 2 and 4mV//V.
The survey has shown generally low conductivity within the
first 100-150m, coinciding with large areas of argillic
alteration as shown by the drilling. However three strong
chargeability anomalies are apparent from an elevation of
3,700m and tend to increase in strength and tend to merge at
around 3,600m elevation. Figures 2-4 show the chargeability
anomalies at depth slices of 3,700m, 3,650m and 3,600m.
The three zones have co-incident moderate resistivity
anomalies as shown in Figure 5, interpreted to reflect
silicification. The chargeabilities are strong with values of
5-6 times background from 6-12mV/V.
The results are highly encouraging particularly as the
strongest drilling results from the initial drilling are
co-incident with the central anomaly even though the holes
were too shallow to test the IP anomaly. The majority of the
initial drill holes are sited on the margins of the IP
anomalies, particularly in the north (see Figure 6). These
holes were targeted on available alteration mapping.
Moreover, the very large and unclosed chargeability anomaly
to the northeast of the alteration system has not been tested
at all as this anomaly is covered by thin volcanic ash. This
is now a priority target for future testing.
The IP anomalies represent compelling drill targets
particularly given the encouraging results from Condor Mines'
initial drilling campaign. The IP survey has provided
excellent focus for the next stage of drilling, which is
anticipated to involve 5,000m of diamond or pre-collared
diamond drilling. The proposed holes are shown in Figure 6.
Condor Mines looks forward to initiating this program in
September or as soon as weather permits.
Figure 1: Location of the IP Lines at Carachapampa
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Figure 2: Inverted Chargeability 3,700m Figure 3: Inverted Chargeability 3,650m
Figure 4: Inverted Chargeability at 3,600m Figure 5: Inverted Resistivity at 3,650m
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Figure 6: Proposed Diamond Drill Holes and Chargeability Anomalies (6, 9 and 12mV/V contours at 3,650m)
Enquiries: Mr Glen Darby
Managing Director
Condor Blanco Mines Limited
Office: +61 (0)2 9225 4070
Email: glen.darby@condormines.com
The information in this report that relates to Exploration Results, Mineral Resources or Ore Reserves is based on information compiled by Carl Swensson, who is a Member of the Australasian Institute of Mining & Metallurgy. Carl Swensson is a director of Condor Blanco Mines Limited and has sufficient experience relevant to the style of mineralisation and type of deposit under consideration and to the activity which he is undertaking to qualify as a Competent Person as defined in the 2004 Edition of the "Australasian Code for Reporting of Exploration Results, Mineral Resources and Ore Reserves". Carl Swensson consents to the inclusion in the report of the matters based on his information in the form and context in which it appears.
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