Kootenay Silver (CVE:KTN.V) Thursday gave an update on ongoing development activities at its flagship Promontorio silver project in Sonora, Mexico.
SRK Consulting has been hired to calculate an independent NI 43-101
compliant mineral resource for Promontorio. The compilation of drill
results and geologic modelling for the updated resource calculation is
well underway, the company said, with completion expected by the end of
The updated resource follows the recent completion of what the
company called a "highly successful", two staged drill program on the
Promontorio project that included 25,000 metres of diamond drilling and
10,000 metres of reverse circulation drilling.
A total of 35,000 metres of drilling has been conducted since the first resource calculation was reported in 2010.
The objective of the recent in-fill drill and resource definition
program was to substantially increase the size of Promontorio's current
contained silver resource.
G&T Metallurgical Services has also been contracted to conduct
additional metallurgical work on Promontorio's mineralization and is
working on three additional bulk samples, with final results expected in
the next few weeks.
One sample is from the Southwest Zone, one from shallow in the Pit Resource and one from the Northeast Zone.
Additionally, acid base accounting of mineralized and wall rock is
being conducted along with a gold deportment study to find out if the
significant gold content of the deposit, which is not yet factored into
any of the company's resource calculations, can be extracted
The first metallurgical testing reported in 2009 was positive, the
company said, showing 82 percent of the silver reporting to the lead
concentrate and a further 7 percent to the zinc concentrate, with 85
percent of the lead recovered to the lead concentrate and 91 percent of
the zinc to the zinc concentrate.
With regards to ongoing baseline and scoping studies, Hatch
Engineering completed initial hydrologic studies designed to
characterize the ground water resources on the project and develop a
conceptual hydrogeologic model.
This information will form the basis for additional studies going
forward for prefeasibility level evaluation of mine water supply,
Kootenay said, including potential dewatering flow rates needed for
potential open-pit and underground mining, and mine water supplies.
Saguaro Geosciences also designed a detailed geotechnical logging
program, which will collect all the necessary data appropriate to future
geotechnical analysis required for feasibility level work.
In other activities, preliminary environmental baseline studies,
conducted by independent consulting engineer Patricia Aguayo Hurtado,
cataloguing the flora and fauna of the area are now complete.
said that the recent confirmation by Kootenay's technical team that
Promontorio silver mineralization is hosted in a large diatreme complex
has "significant geologic implication", as these types of systems can
typically be very large in size and result in the discovery of several
Examples in Mexico include the Pitarrilla silver-lead-zinc deposits
in Durango and the Peñasquito silver-gold-lead-zinc mine in the
northeast of the state of Zacatecas in north-central Mexico.
At present, silver mineralization remains open in both strike
directions and down dip within Promontorio's Diatreme complex, between
the Pit, Southwest Extension and Northeast Zones, the company said.
Kootenay has also identified a host of new prospective targets within the Diatreme complex that require further drill testing.
the company said plans are underway to conduct a large follow up drill
program after the release of the NI 43-101 resource update.
is actively developing mineral projects in the Sierra Madre Region of
Mexico and in British Columbia, Canada. The company's flagship property
is the former producing Promontorio Silver mine in Sonora State, Mexico.
In late April, the company released results from its recently
completed drilling program at Promontorio, including 18 metres of 254
grams per tonne (g/t) silver equivalent, within 89 metres of 84 g/t
silver equivalent in hole DH-116-12 in the Northeast Zone.
Currently, Promontorio itself hosts an NI 43-101-compliant resource
containing 8.9 million indicated ounces of silver plus 1.17 million
ounces of inferred silver, 99.3 million indicated pounds of lead plus
13.4 million inferred pounds of lead, and 110.8 million indicated pounds
of zinc plus 14.3 million inferred pounds of zinc.