TSXV - TK; Frankfurt - TLD; Pinksheets - TKRFF
VANCOUVER, Oct.
18, 2012 /CNW/ - Tinka Resources Limited (the "Company"), (TSXV: TK) (Frankfurt: TLD)
(OTCPK: TKRFF), announces the release of an independent NI 43-101 report for the
Companys 100 percent-owned Colquipucro project, central Peru.
Within
this report are the details of the recently announced Zone 1 inferred
silver resource calculation (see press release October 15, 2012).
A
copy of the full report is available on www.sedar.com and the Companys website www.tinkaresources.com.
The report also details the results of the second round of
metallurgical tests.
Mr Carter said: "We are extremely pleased with the details and
recommendations in this report and will work towards commencing in-fill
drilling at Zone 1 as soon as possible.
This second round of
metallurgical results provides the Company with further information as
to the recoverability of the silver using a significantly lower cyanide
concentration than used in the preliminary metallurgical test performed
in 2009".
Four sets of drill core samples were tested by bottle roll and column
leach in 2012 at the metallurgical division of SGS Laboratories in
Lima, Peru.
Composite samples with nominal head grades of 30, 60, 90
and 120 g/t Ag were selected.
The bottle roll tests yielded recoveries
of up to 84% Ag and the column leach tests up to 71% Ag after 72 hours.
The preliminary bottle roll tests conducted in 2009 were done on two
sets of drill core samples using significantly higher cyanide
concentrations; these yielded recoveries of up to 90% and 97% Ag after
72 hours.
SGS Laboratories observed that in the bottle roll tests with only a 0.1
g/L cyanide concentration, extraction rates were fairly low; however,
increasing the cyanide concentration to 0.5 g/L significantly increased
the extraction rate for silver by 15%.
Plenge Laboratories, for
comparison, used cyanide concentrations of 2.0 g/L to 5.0 g/L.
The column leach test results closely match the extraction results
observed in the bottle roll and benchmark test.
As with the bottle roll
tests, the higher grade composites also yielded the best silver
extractions in solution.
SGS made several recommendations to further study and improve the vat leach tests, including use of different particle sizes, changing the irrigation rates, using larger volume of sample and varying the reagent concentrations.
The Company has permits in place to conduct the phase 3 drilling
program.
In-fill drilling will be done along gaps in the existing
sections and along intervening sections spaced 50 m apart.
The
additional drilling should be adequate to upgrade the resources from
the inferred to indicated category and core from the program will used for further metallurgical
studies.
The Companys Qualified Person, John Nebocat (P.Eng.), has reviewed and approved the contents of this news release.
On behalf of the Board,
"Andrew Carter"
Andrew Carter, President & CEO
Forward Looking Statements This Company Press Release contains certain "forward-looking"
statements and information relating to the Company that are based on
the beliefs of the Companys management as well as assumptions made by
and information currently available to the Companys management. Such
statements reflect the current risks, uncertainties and assumptions
related to certain factors including, without limitations, competitive
factors, general economic conditions, customer relations, relationships
with vendors and strategic partners, the interest rate environment,
governmental regulation and supervision, seasonality, technological
change, changes in industry practices, and one-time events. Should any
one or more of these risks or uncertainties materialize, or should any
underlying assumptions prove incorrect, actual results may vary
materially from those described herein.
Neither the TSX Venture Exchange, its Regulation Services Provider (as that term is defined in the policies of the TSX Venture Exchange), nor the Frankfurt Stock Exchange accepts responsibility for the adequacy or accuracy of this news release.
SOURCE: Tinka Resources Limited
