Focus Samples High Grade Silver at Santa Rosa, Peru – 5.9m grading 12.5 oz/t Ag, 15.4% Zn & 24.3% Pb
VANCOUVER, April 19 /PRNewswire/ – Focus Ventures Ltd. (TSXV: FCV.V) is pleased
to provide a further update for its Santa Rosa property located 100km
north of Lima, where the Company is preparing for a 2,000m drill
Since the last update on March 10, the Company has completed further
mapping, sampling and structural studies, as well as IP and magnetic
geophysical surveys. Much of the mineralization seen underground at
Santa Rosa does not outcrop. The current work has better defined this
blind mineralization, and also validated additional priority targets at
Santa Rosa Sur, Huallay and Zona Oxidos.
In the 4267 level of the Santa Rosa mine, clearing of a collapsed
section of a gallery permitted sampling of a massive sulphide vein at
least 6m wide that assayed bonanza grades in silver. A 5.9m channel
sample averaged 389 g/t Ag (12.5 oz/t Ag), 24.3% Pb and 15.4% Zn. The
samples were taken some 20m from an adjacent cross-cut where earlier
sampling by Focus gave a broader interval of 53.6m @ 32 g/t Ag, 1.0% Pb
and 4.0% Zn (see press release March 10, 2011).
Channel sampling of old stopes in the lowest underground workings of the
Milagros-Sally mine returned more wide zones of zinc, silver and lead
mineralization in addition to the ones previously reported in the March
10, 2011 release. These are associated with zones of massive sulphide
and stockworks hosted in quartzites and volcanics. The new intervals
# Samples Total Length m Ag g/t Pb % Zn % Santa Rosa Level 4267 5 5.9 389 24.3 15.4 Milagros-Sally Level 4340 10 14.0 40 0.8 8.3 Milagros-Sally Level 4340 4 5.9 11 0.1 6.5 Milagros-Sally Level 4340 3 3.6 11 0.5 6.6
It is possible that the thick silver-rich vein sampled on level 4267 is
close to a principal north-south to north-northwest trending bounding
fault that may represent a fundamental structural control to the
deposit and requires exploration to the south by drilling.
A recent structural study by Telluris Consulting Ltd. highlighted that
there are marked similarities between the structural setting at Santa
Rosa and the nearby Iscaycruz deposit, located within the same belt
some 40km to the north. In both deposits mineralization occurs where
bedding contacts are sub-vertical in the steep limbs of fold closures.
At Santa Rosa the mineralization is associated with several structural
trends consistent with regional north-northeast to northeast-southwest
compression, with the richer zones associated with steep northeast to
east-northeast trending veins and splays.
IP Survey Completed
A detailed Induced Polarization survey comprising 11.3 line kilometers
over a grid 0.5km x 1.6km and undertaken in the main area of
underground workings and over targets to the north, west and south,
successfully defined additional targets. The survey was carried out by
Arce Geofisicos, an independent geophysical survey firm based in Lima.
Robust chargeability anomalies both near surface and deep were produced,
possibly reflecting the presence of metallic sulphides such as pyrite,
chalcopyrite and galena. Particularly encouraging was the response seen
over the Santa Rosa Sur and Zona Oxidos targets, some 300m south and
400m northwest of the mine respectively.
Both are characterized by near surface chargeability anomalies where
altered surface outcrops are strongly anomalous in Ag, Pb, Zn, Mn and
Hg. The targets are part of an east-northeast trending chargeability
anomaly that extends from the Milagros workings and continues 400m to
the Huallay zone where it is open to the west. Of note is a thick
resistivity low anomaly that forms a broad linear anomaly some 800m
long and approximately 100m thick from surface that runs from the Santa
Rosa mine area to the southeast. The anomaly appears to correspond to a
zone of weathering characterized by a strongly altered, oxidized and
fractured quartzites, shales and volcanics.
Geophysical plans can be viewed by clicking on the following link:
Permitting for the drill program is taking longer than anticipated
because of requested changes in the application format by the Mines
Department due to an existing environmental permit already in place for
the former mine operation. Permits are now expected to be granted in
The property is located within the prolific Central Peru Polymetallic
Belt, at an altitude of between 4,000m and 4,500m above sea level.
Several world class silver, lead and zinc mines owned by Panamerican
Silver, Buenaventura, Glencore and Volcan lie within a 50km radius of
the Santa Rosa property. Volcan, the world’s fourth biggest silver and
zinc producer, operates the high-grade Shalca Ag-Pb-Zn Mine which
borders the Santa Rosa property on the northern end of the mineralized
The property has undergone some historical small scale production where
it is estimated that approximately 30,000t has been mined. Most recent
records from 2008 show grades in the order of 6 oz/t Ag, 8% Zn and 6%
Pb from the Santa Rosa and Milagros zones.
The style of mineralization observed in the underground workings is
associated with a broad system of mineralized fault splays that cut
Chimu quartzites, shaley sandstones and overlying andesitic lavas.
This style of mineralization contrasts with the broadly north-south
trending veins (e.g. Yanapata) that occur in the southern part of the
property within Tertiary volcanic rocks.
The property has never undergone any systematic modern exploration and
is presently undrilled.
Focus can earn 100% in the property by making cash payments totalling
US$9 million over 4 years to a local Peruvian company. For resources
defined in Measured and Indicated categories in excess of 5 million
tonnes, a royalty of US$1.19 per tonne will be payable.
The scientific and technical information in this release was prepared
under the supervision of Mr. David Cass, Focus’s President, who is a
member of the Association of Professional Engineers and Geoscientists
of British Columbia, and a “Qualified Person” in accordance with NI
Samples were analyzed by ALS Chemex Laboratories in Lima. Gold was
assayed by Atomic Absorption Spectrometry with fire assay gravimetric
finish. Silver was determined by multi-acid digestion and ICP-AES with
Atomic Absorption finish. Lead and zinc were determined by ICP with
Atomic Absorption with volumetric finish. ALS Chemex’s quality control
system complies with International Standards ISO 9001:2000 and ISO
17025:2005. Analytical accuracy and precision are monitored by the
analysis of reagent blanks, reference material and replicate samples.
Focus’s own blanks and duplicates were included in the sample stream.
About Focus Ventures
Focus Ventures is acquiring advanced, drill-ready projects in Peru.
Backed by an experienced technical team of geologists and consultants,
Focus’s strategy is to identify and acquire former producing mines or
un-tested gold, silver and base metal properties that show potential to
become new mines.
ON BEHALF OF THE BOARD
David Cass, President
Neither the TSX Venture Exchange nor the Investment Industry Regulatory
Organization of Canada accepts responsibility for the adequacy or
accuracy of this release.
Some of the statements in this news release contain forward-looking
information that involves inherent risk and uncertainty affecting the
business of Focus Ventures Ltd. Actual results may differ materially
from those currently anticipated in such statement.
SOURCE Focus Ventures Ltd.