Batero Gold Corp. (CVE:BAT) unveiled Thursday information on the oxide resource potential and metallurgical test work contained in its NI 43-101 compliant technical report recently filed for the company's Batero-Quinchia project in Colombia.
As part of Batero’s planned 2012 work program to
evaluate the potential of a high grade development option at the
La Cumbre porphyry deposit in the southern area of the mineral resources
at the project, the company will look to improve project economics
through low cost heap leach mineral processing, it said.
company will also advance metallurgical test work and deposit modeling
to increase oxide resources, gold grade and recovery.
stage of metallurgical testing should investigate means for improving
cyanidation recovery. The company said a test program will be
undertaken to better understand the relationship between gold and
sulphur grades with respect to gold recovery.
technical report filed earlier this month, it showed zones of higher
grade oxide resources, grading more than 1 gram per tonne (g/t) gold
near surface at La Cumbre and at 11.42 g/t gold over 5.8 metres adjacent
to the deposit, remain open to delineate.
This means that there is potential to further boost project economics, Batero said.
metallurgical test work done by G&T Metallurgical Services on oxide
gold mineralization also returned up to 94 percent recovery. The
lowest sulphur grade produced the highest recovery.
gold resources in the report, at a 0.16 g/t gold cut off, were estimated
at 313,000 ounces within 18 million tonnes averaging 0.54 g/t gold in
the indicated category, and 275,000 ounces within 24 million tonnes
averaging 0.36 g/t gold in the inferred category.
noted that oxide mineral resources amenable to low cost heap leach
processing represent approximately 10 percent of the current indicated
and inferred resources at the project at this early stage.
company said areas of oxide mineralization adjacent to La Cumbre still
need to be modelled into the oxide portion of the resource estimate.
Mineralization in the oxide horizon, and the thicker, underlying
transition horizon at La Cumbre, will be further tested to increase the
potential leachable gold resource, Batero said.
At surface to a
preliminary depth of 70 metres at the La Cumbre deposit is a higher
grade gold-bearing oxide mineral zone, and below this zone lies a
thicker transition mineral zone, over a vertical distance of 150 to 200
metres, which overlies the primary sulphide mineral zone.
thick transition zone, with low sulphur content, requires additional
metallurgical test work to be included in the oxide mineral resources of
the project, Batero noted.
“We are pleased that 10% of our initial
mineral resources are classified as oxide mineralization that may be
amenable to low cost heap leaching," said president and CEO Brandon
"Preliminary metallurgical testing also shows high
recoveries of up to 94% in the oxide material. An objective of our 2012
work program will be growth of the oxide opportunity at La Cumbre to
contribute positively to the PEA.
Further modeling and metallurgical test work will be completed in
2012 to determine if there is a variation in gold recoveries between the
oxide and the transition zones or if these two zones can be treated
"Also, further drill testing of the oxide zone has
the potential to increase the volume of the oxide resources through new
discoveries and better definition.”
Pockets of higher grade gold mineralization are situated throughout the mineral resources at La Cumbre, Batero said.
$8 million, 12-month work program for the project in 2012 includes
15,000 metres of drilling, and an updated resource estimate within a PEA
for the La Cumbre area of the property.
The mineral resource
estimate included in the technical report, as of February 24, 2012, was
prepared by Roscoe Postle Associates.
is a Vancouver-based precious and base metals exploration and
development company focused in Colombia’s emerging and prolific
Mid-Cauca porphyry gold and copper belt. Its Batero-Quinchia project
comprises a 1,407 hectare tenement.
For more detailed information on the project, please click on the links below: