Timmins Gold Reports Positive Results From Bulk Sample Leach Testing Program at San Francisco Mine
Published : November 21, 2012
( 0 vote, 0/5 ) Print article
  Article Comments Comment this article Rating Follow Company  

VANCOUVER, BRITISH COLUMBIA--(Marketwire - Nov. 21, 2012) - Timmins Gold Corp. ("Timmins Gold" or the "Company") (News - Market indicators)(NYSE MKT:TGD)(NYSE Amex:TGD) announces a summary of the results from a recent bulk sample locked column leach testing program on material from the Company's San Francisco Mine (San Francisco deposit and La Chicharra deposit) and tested at METCON Research metallurgical laboratory in Tucson, Arizona in 2012.

The column testing results indicate an average gold extraction of 71.0% based on a crush size of 80% of the particles passing 3/8 inch (P80 3/8 inch) and 77.1% based on a crush size of 80% of the particles passing 1/4 inch (P80 1/4 inch) on ore samples from the San Francisco deposit. For La Chicharra ore samples, the column testing results indicate an average gold extraction of 78.3% and 80.9% based on a crush size of P80 3/8 inch and a crush size of P80 1/4 inch, respectively. No percolation issues were observed in the locked cycle tests.

Bruce Bragagnolo, CEO of Timmins Gold, stated, "We are encouraged by the metallurgical results from this recent metallurgical testing program. We will continue to use a Life of Mine (LOM) recovery of 68.6% gold recovery in our planning and analyses, based on our most recent mine plan and block model. We believe however that the results of this testing program indicate there is potential to further improve our recoveries through process optimization."

Discussion of Test Results

Six composite samples were tested in the current metallurgical study; five from the San Francisco (SF) deposit and one from La Chicharra. The samples from the San Francisco deposit varied by rock type.

  • La Chicharra
  • SF - Granite
  • SF - Basic Gneiss
  • SF - Gabbro
  • SF - Pegmatite & Schist
  • SF - Acid Gneiss

Tables 1 and 2 outline the gold extractions for each sample based on crush sizes of P80 3/8 inch (9.5mm) and P80 1/4 inch (6.3mm), respectively. Two averages are shown: (1) a simple average and (2) a weighted average based on the estimated LOM relative abundance of each rock type within the deposit.

Table 1 - Summary of column leach tests, P80 -3/8" crush size, 127 days.
  LOM Abundance Au Extraction (%)
SF - Granite 13.0% 76.58
SF - Basic Gneiss 26.4% 71.08
SF - Gabbro 18.9% 63.78
SF - Pegmatite & Schist 12.7% 74.38
SF - Acid Gneiss 29.1% 71.40
SF - Simple Avg. 100% 71.44
SF - Weighted Avg.    
(based on LOM abundance) 100% 71.00
La Chicharra 100% 78.34
Table 2 - Summary of column leach tests, P80 -1/4" crush size, 127 days.
  LOM Abundance Au Extraction (%)
SF - Granite 13.0% 87.89
SF - Basic Gneiss 26.4% 74.37
SF - Gabbro 18.9% 71.22
SF - Pegmatite & Schist 12.7% 79.69
SF - Acid Gneiss 29.1% 77.03
SF - Simple Avg. 100% 78.04
SF - Weighted Avg.    
(based on LOM abundance) 100% 77.06
La Chicharra 100% 80.89

The common leaching parameters to all column leach tests are summarized below:

  • Sample sizes were ~178kg for each column test.
  • Calcium oxide was blended into the test charge. Calcium oxide consumption was determined in a 72 hr agitated cyanidation bottle roll test.
  • The initial feed solution was prepared by adding reagent grade calcium oxide to Tucson tap water to obtain a solution pH of 11.00, followed by the addition of 1.0 gram of sodium cyanide per liter of solution. The columns were irrigated at a flow rate of 10 liters per hour per square meter.
  • Column tests were conducted under locked cycle type of leaching regime by contacting the pregnant solution with activated carbon to remove gold and silver in solution. The loaded activated carbon in each column test was dried, weighed and saved in sealed and labeled plastic bags.
  • The resulting barren solution was used as feed solution after the addition of sodium cyanide and calcium oxide to maintain 1.0 gram of cyanide per liter of solution and a pH of 10.50 to 11.00.

Quality Control

As part of the METCON QA/QC program, approximately 10 percent of the daily pregnant solution samples from each column test were re-assayed to verify accuracy of the original gold and silver assay conducted on the daily pregnant solution samples. Linear regression analysis was conducted to quantify the difference between both assays. The following table summarizes the QA/QC analysis conducted on the pregnant solution samples.

Table 3 - Correlation coefficient, Daily pregnant solution vs. Duplicates
  R2 Correlation Coefficient
  Au Ag
SF - Granite 0.9596 0.9539
SF - Basic Gneiss 0.9563 0.9445
SF - Gabbro 0.9842 0.9729
SF - Pegmatite & Schist 0.9808 0.9738
SF - Acid Gneiss 0.9277 0.9086
La Chicharra 0.9696 0.9970

The linear regression analysis conducted on the pregnant solution assays showed that there is a good correlation between the original gold and silver assays and the duplicate assays conducted as part of the METCON QA/QC program.

About Timmins Gold

Focused solely in Mexico, Timmins Gold Corp. is in commercial gold production at its wholly owned San Francisco gold mine in Sonora, Mexico. The mine is a past-producing open pit heap leach operation. Timmins Gold has forecast production at a rate of approximately 130,000 ounces of gold per year (Micon International NI 43-101F1 Technical Report dated November, 2011).

This press release was reviewed and prepared by Lawrence A. Dick, Ph.D., P.Geo, who is a consultant to the Company and is recognized as a Qualified Person under the guidelines of National Instrument 43-101 ("QP") and by Miguel Soto, P. Geo., a director and the Vice President of Operations of the Company and by Rodrigo R. Carneiro, MS., QP in Metallurgy and Processing, Director of Metcon Research and Process Engineering of Tucson Arizona. For further information contact Timmins Gold Corp. at 604-682-4002 or go to the website at www.timminsgold.com.

Cautionary Note Regarding Forward-Looking Statements

Certain statements contained herein may constitute forward-looking statements and are made pursuant to the "safe harbor" provisions of the United States Private Securities Litigation Reform Act of 1995 and Canadian securities laws. Forward-looking statements are statements which relate to future events. Such statements include estimates, forecasts and statements as to management's expectations with respect to, among other things, business and financial prospects, financial multiples and accretion estimates, future trends, plans, strategies, objectives and expectations, including with respect to production, exploration drilling, reserves and resources, exploitation activities and events or future operations. Information inferred from the interpretation of drilling results and information concerning mineral resource estimates may also be deemed to be forward-looking statements, as it constitutes a prediction of what might be found to be present when, and if, a project is actually developed.

In some cases, you can identify forward-looking statements by terminology such as "may", "should", "expects", "plans, "anticipates", believes", "estimates", "predicts", "potential", or "continue" or the negative of these terms or other comparable terminology. These statements are only predictions and involve known and unknown risks, uncertainties and other factors that may cause our or our industry's actual results, level of activity, performance or achievements to be materially different from any future results, levels of activity, performance, or achievements expressed or implied by these forward-looking statements.

While these forward-looking statements, and any assumptions upon which they are based, are made in good faith and reflect our current judgment regarding the direction of our business, actual results will almost always vary, sometimes materially, from any estimates, predictions, projections, assumptions or other future performance suggestions herein.

Except as required by applicable law, Timmins Gold does not intend to update any forward-looking statements to conform these statements to actual results.

Neither the TSX nor its Regulation Services Provider (as that term is defined in the policies of the TSX) nor the NYSE MKT accepts responsibility for the adequacy or accuracy of this news release.

Timmins Gold Corp.
Bruce Bragagnolo
CEO and Director
Data and Statistics for these countries : Mexico | All
Gold and Silver Prices for these countries : Mexico | All

Timmins Gold Corp.

ISIN : CA88741P1036
Follow and Invest
Add to watch list Add to your portfolio Add or edit a note
Add Alert Add to Watchlists Add to Portfolio Add Note
Projects & res.
Asset profile
Contact Cpy

Timmins Gold is a producing gold company based in Canada.

Timmins Gold holds various exploration projects in Mexico.

Its main asset in production is SAN FRANCISCO in Mexico and its main exploration properties are QUILA, COCULA, EL PICACHO, TEQUILA, EL CAPOMO, TRINCHERAS & PATRICIA, TIM CLAIMS, NORMA SONORA, LA CHICHARRA and TEQUILA in Mexico.

Timmins Gold is listed in Canada and in United States of America. Its market capitalisation is CA$ 231.2 millions as of today (€ 210.4 millions).

Its stock quote reached its highest recent level on November 16, 2012 at CA$ 3.48, and its lowest recent point on January 22, 2016 at CA$ 0.11.

Timmins Gold has 355 630 016 shares outstanding.

Your feedback is appreciated, please leave a comment or rate this article.
Rate : Average note :0 (0 vote) View Top rated
In the News and Medias of Timmins Gold Corp.
5/11/2009Timmins Gold Corp. (TSX:TMM): New Recommendation
Annual reports of Timmins Gold Corp.
2008 Annual report
2007 Annual report
Financings of Timmins Gold Corp.
3/26/2015Announces Mailing of Management Information Circular and Wit...
7/18/2008$14,300,000 Second Tranche Of Private Placement Closed
6/17/2008$5,000,000 First Tranche of Private Placement Closed
Nominations of Timmins Gold Corp.
9/10/2013Announces the Resignation of a Director
6/27/2011announces appointment of Chief Financial Officer
Financials of Timmins Gold Corp.
10/15/2013Provides Notice of Release of its Q3 2013 Financial Results ...
5/8/2013Reports Record Profit From Operations of $19.3 million and ...
4/25/2013Provides Notice of Its Q1 2013 Financial Results on May 8, 2...
3/20/2013Reports Record Free Cash Flow, Profit from Operations and Ea...
3/12/2013Provides Notice of the 2012 Year End Financial Results on Ma...
10/29/2012Provides Notice of Q3 2012 Financial Results on November 8, ...
8/7/2012Provides Notice of Q2 2012 Financial Results on August 14, 2...
3/29/2012Reports Financial Results for the Nine Months and Year Ended...
9/15/2011reports Financial Results for its First Quarter ended June 3...
3/2/2011(angl) Reports Q3 Operating and Financial Results San Fran. ...
1/20/2011(San Francisco)20,030 ounces of Gold Sold During Third Quarter of Productio...
11/30/2010Ramp Up to Full Production Proceeding on Schedule During Its...
Project news of Timmins Gold Corp.
11/5/2013(San Francisco)d Mine Plan for the San Francisco Gold Mine; Mine Life Incre...
4/30/2013(San Francisco)intersects 72 meters of 1.6 gpt gold, 15 meters of 4.2 gpt g...
1/11/2013Reports Record Production of 94,444 Ounces of Gold for 2012
11/23/2012(San Francisco)intersects new mineralized zone approximately 1 km to the ea...
11/21/2012(San Francisco)Reports Positive Results From Bulk Sample Leach Testing Prog...
10/9/2012Reports Record Production of 25,153 Ounces of Gold and 13,85...
7/10/2012Reports Record Production of 23,203 Ounces of Gold and 14,45...
4/11/2012Reports Record Gold Production of 21,532 Ounces of Gold and ...
1/10/2012Reports Record Production of 21,524 Gold Ounces in Final Qua...
12/2/2011(San Francisco)Operational Update - Gold Recoveries Improving This Quarter ...
9/1/2011(La Chicharra)intersects 36.58 metres grading 0.816 grams per tonne gold a...
8/23/2011(San Francisco)intersects 4.57 metres grading 8.134 grams per tonne gold
7/14/2011(San Francisco)intersects Gold below the Open Pit and along strike at San F...
6/13/2011Announces Replacement Credit Facility with Sprott Resource L...
5/11/2011(San Francisco)sells 65,784 ounces of gold during first year of commercial...
3/20/2011(San Francisco)Intersects 19.81 meters of 5.08 gpt Gold in Ongoing Drill Pr...
3/2/2011(San Francisco)Reports Q3 Operating and Financial Results San Francisco Min...
2/23/2011(San Francisco)95,000 Hectare Claim Block Staked Between Timmins Gold's San...
2/18/2011(Norma Sonora)Announces Initial Drill Results from the Norma Gold Property
2/8/2011(San Francisco)10.67 meters of 7.51 gpt gold Intersected in Ongoing Drill P...
1/14/2011(San Francisco)d Mine Plan and Increased Production Schedule for the San Fr...
11/16/2010(San Francisco)San Francisco Mine Gold Reserves Increased by 28%
2/16/2010(San Francisco)Timmins Gold Corp.: Gold Production Continues
12/16/2008(Tequila)intersects 11.64 g/t gold across 2 meters, 6.17 g/t gold acr...
4/8/2008Pre-Feasibility Study Confirms Economic Viability of the San...
2/21/2008(Tequila)Drilling Intersects 5.88 G/T Gold And 29.9 G/T Silver Across...
2/11/2008(Las Coloradas)Drilling Commences At Timmins Gold High Grade Las Coloradas ...
11/28/2007(San Francisco)Successful Exploration and Development and Metallurgical Pro...
10/29/2007(San Francisco)Acquisition Of San Francisco Mine Property
6/13/2007(San Francisco)Diamond Drill, Geophysical And Exploration Program Commences...
Corporate news of Timmins Gold Corp.
7/25/2016Timmins Gold to Release Second Quarter 2016 Financial Result...
7/22/2016Timmins Gold Completes Caballo Blanco Transaction
7/13/2016Timmins Gold reports production of 25,863 gold ounces for th...
6/14/2016Timmins Gold Repays Secured Debt to Sprott and Goldcorp
5/26/2016Timmins Gold Announces AGM Results
5/25/2016Timmins Gold Announces AGM Results
5/13/2016Timmins Gold Reports Earnings from Mine Operations of $6.3 m...
5/12/2016Timmins Gold to sell Caballo Blanco Gold Project
5/4/2016Timmins Gold to Release First Quarter 2016 Financial Results...
5/3/2016Timmins Gold to Release First Quarter 2016 Financial Results...
4/15/2016Timmins Gold reports production of 25,120 gold ounces for th...
4/13/2016Timmins Gold Reports Production of 25,120 Gold Ounces for th...
1/27/2016Timmins Gold announces Re-Financing of Credit Facility with ...
1/20/2016Timmins Gold Signs New Credit Facility Term Sheet
1/1/2016Timmins Gold Receives Short Term Loan Extension
12/31/2015Timmins Gold Receives Short Term Loan Extension
11/23/2015Is Timmins Gold Corp (TGD) A Good Stock To Buy?
11/12/2015Timmins Gold Announces Results of 2Q15 Ana Paula drill progr...
11/3/2015Timmins Gold Reports 2015 Third Quarter Results
11/3/2015Timmins Gold Closes Acquisition of Process Plant and Infrast...
11/2/2015Timmins Gold Closes Acquisition of Process Plant and Infrast...
10/23/2015Timmins Gold to Release Third Quarter 2015 Operating and Fin...
10/19/2015Timmins Gold Announces Closing of C$6 million Private Placem...
10/6/2015Timmins Gold Corp. Announces Leadership Change
10/2/2015Timmins Gold Reports Small Tear In New Leach Pads
9/19/2015Timmins Gold Acquires Process Plant and Infrastructure for A...
7/30/2015Timmins Gold Reports 2015 Second Quarter Results
7/25/2015Timmins Gold to Release Second Quarter 2015 Operating and Fi...
7/24/2015Timmins Gold to Release Second Quarter 2015 Operating and Fi...
7/7/2015Timmins Gold Commences Underground Pilot Phase at its San Fr...
5/26/2015Timmins Gold Completes Acquisition of Newstrike Capital
5/26/2015Completes Acquisition of Newstrike Capital
5/7/2015Van Den Berg Trades in Canadian Mining Stocks in First Quart...
5/5/2015Timmins Gold Reports 2015 First Quarter Financial Results
4/30/2015Timmins Gold and Newstrike Capital Shareholders Approve the ...
4/27/2015Timmins Gold to Release First Quarter 2015 Financial Results...
4/21/2015ISS and Glass Lewis Recommend Timmins Gold Shareholders Vote...
4/21/2015ISS and Glass Lewis Recommend Timmins Gold Shareholders Vote...
4/14/2015Timmins Gold reports production of 24,374 AuEq ounces for th...
4/13/2015Timmins Gold Files Annual Documents
3/26/2015Timmins Gold Corp. Announces Mailing of Management Informati...
3/10/2015Reports Earnings From Operations of $22.2 Million for 2014
3/10/2015Timmins Gold Reports Earnings From Operations of $22.2 Milli...
3/5/2015Timmins Gold to Release Fourth Quarter and Year-End 2014 Fin...
3/5/2015to Release Fourth Quarter and Year-End 2014 Financial Result...
2/24/2015CANADA STOCKS-Futures point to lower open for TSX
2/19/2015CANADA STOCKS-TSX set to open lower as crude declines
2/17/2015Timmins Gold to Combine with Newstrike Capital to Create An ...
2/17/2015to Combine With Newstrike Capital to Create an Emerging, Mex...
2/12/2015Timmins Gold Corp. Identifies High Grade Mineralization Adja...
2/12/2015Timmins Gold Corp. Files Technical Report for the Caballo Bl...
2/11/2015Timmins Gold Corp. Files Technical Report for the Caballo Bl...
2/5/2015Timmins Gold Identifies Potential Satellite Deposits North o...
2/3/2015Timmins Gold Announces Re-Financing of Credit Facility With ...
2/3/2015Announces Re-Financing of Credit Facility With Sprott Resour...
1/26/2015Timmins Gold Reports Record Production of 121,573 AuEq Ozs i...
1/26/2015Reports Record Production of 121,573 AuEq Ozs in 2014 and 25...
1/5/2015Timmins Gold announces extension of Credit Facility with Spr...
12/24/2014Timmins Gold Announces Extension of Credit Facility With Spr...
12/24/2014Timmins Gold Completes Acquisition of Caballo Blanco Gold Pr...
12/18/2014Timmins Gold to Purchase Caballo Blanco Gold Project
10/28/2014Timmins Gold Reports Earnings from Operations of $3.9 Millio...
10/21/2014Timmins Gold to release Q3 2014 financial results on October...
10/17/2014Timmins Gold reports production of 27,013 gold equivalent ou...
8/6/2014Timmins Gold Announces AGM Results
7/29/2014Timmins Gold Reports Earnings from Operations of $7.2 Millio...
7/22/2014Timmins Gold to Release Q2 2014 Financial Results on July 29...
7/10/2014Timmins Gold Reports Production of 32,932 Gold Ounces for th...
1/13/2014Surpasses Guidance With Record Production of 120,900 AuEq oz...
11/5/2013(San Francisco)Announces Updated Reserve and Resource Estimates for the San...
10/29/2013Reports $4.8 Million in Earnings for Q3 2013
10/9/2013Reports Record Production of 29,139 Gold Ounces for the Thir...
8/8/2013Reports Results for Q2 2013
7/18/2013Reports Production of 28,024 Gold Ounces for the Second Quar...
4/10/2013Reports Record Production of 28,328 Gold Ounces for the Firs...
11/8/2012Reports Record Profit From Operations of $18.3 Million for Q...
9/27/2012Strengthens Management and Board
9/18/2012(San Francisco)Intersects 9.14 Meters of 10.5 gpt Gold in Ongoing Drill Pro...
8/14/2012Reports Profit From Operations of $13.6 Million for Q2 2012
7/18/2012Announces Commencement of Drill Program on Its Zacatecas Cla...
6/21/2012Announces Extension of Credit Facility With Sprott Resource ...
5/16/2012Reports Profit From Operations of $12.7 Million for Q1 2012
3/14/2012(San Francisco)Announces Updated Resource Estimates for the San Francisco G...
10/26/2011Reports Second Quarter Production Results
9/20/2011(San Francisco)Announces Updated Reserve and Resource Estimates for the San...
8/11/2011Reports First Quarter Production Results Gold Sales of 17,96...
7/7/2011Announces Sale of Pacific Road Block
3/17/2011Timmins Urges Board of Capital Gold not to Postpone Capital ...
3/15/2011Increases Offer for Capital Gold by Adding US$0.25 Cash per ...
3/9/2011Mails Letter to Capital Gold Shareholders
2/11/2011Files Registration Statement to Provide Capital Gold Stockho...
2/10/2011Responds to Capital Gold's Rejection of Merger of Equals Pro...
12/10/2010Mr. Barry Fraser has been appointed as a director and the Ch...
12/3/2010Makes Final Request That Capital Gold Board Reconsider Merge...
5/29/2008$19,300,000 Financing Arranged
5/23/2008Initial Permit Approvals Received for San Francisco Mine
4/15/2008Channel Sampling On Surface Yields 2.21 G/T Gold Across 99 M...
3/26/2008 Featured in Haywood Securities Junior Mining Universe
3/11/2008"Biz Clip"
12/5/2007Drill Arrives at Tequila Project
12/3/2007Golden Hope Mines Substantially Expands Size of Timmins Gold...
10/30/2007Cocula Property Acquisition
10/11/2007Tequila Gold Project, Jalisco, Mexico
8/9/2007Retains Grandich Publications
6/20/2007Property Acquisition - Tequila Project, Jalisco, Mexico
5/16/2007Completes Acquisition of 100% Interest in Past Producing San...
Comments closed
Latest comment posted for this article
Be the first to comment
Add your comment
CA$ 0.650
05/15 15:59 0.030
Prev close Open
0.620 0.630
Low High
0.620 0.650
Year l/h YTD var.
 -  -
52 week l/h 52 week var.
0.510 -  0.650 20.37%
Volume 1 month var.
2,416,427 -%
24hGold TrendPower© : 23
Produces Gold
Explores for Copper - Gold - Silver
Interactive chart Add to compare
Print Compare Export
Last updated on : 9/24/2010
You must be logged in to use the porfolio and watchlists (free)
Top Newsreleases
Annual variation
5 years chart
3 months chart
3 months volume chart
Mining Company News
Plymouth Minerals LTDPLH.AX
Plymouth Minerals Intersects Further High Grade Potash in Drilling at Banio Potash Project - Plannin
AU$ 0.12-8.00%Trend Power :
announces expected non-cash impairment
AU$ 6.00+0.00%Trend Power :
Oceana Gold(Au)OGC.AX
AU$ 3.64+2.54%Trend Power :
Western Areas NL(Au-Ni-Pl)WSA.AX
Advance Notice - Full Year Results Conference Call
AU$ 3.71-3.89%Trend Power :
Canadian Zinc(Ag-Au-Cu)CZN.TO
Reports Financial Results for Q2 and Provides Project Updates
CA$ 0.14+3.70%Trend Power :
Stornoway Diamond(Gems-Au-Ur)SWY.TO
Second Quarter Results
CA$ 0.58+1.75%Trend Power :
McEwen Mining(Cu-Le-Zn)MUX
US$ 2.14-1.38%Trend Power :
Rentech Announces Results for Second Quarter 2017
US$ 0.20-12.28%Trend Power :
Reduced Funding Requirement
GBX 2.95+7.27%Trend Power :
Lupaka Gold Corp.LPK.V
Lupaka Gold Receives First Tranche Under Amended Invicta Financing Agreement
CA$ 0.23+0.00%Trend Power :
Closes Bridge Loan Financing
CA$ 2.29+7.01%Trend Power :
Guyana Goldfields(Cu-Zn-Pa)GUY.TO
Reports Second Quarter 2017 Results and Maintains Production Guidance
CA$ 5.03-1.37%Trend Power :
Lundin Mining(Ag-Au-Cu)LUN.TO
d Share Capital and Voting Rights for Lundin Mining
CA$ 8.49+1.31%Trend Power :
Canarc Res.(Au)CCM.TO
Canarc Reports High Grade Gold in Surface Rock Samples at Fondaway Canyon, Nevada
CA$ 0.06-13.33%Trend Power :
Q A April 2017 Quarterly Report
AU$ 0.23+0.00%Trend Power :
Uranium Res.(Ur)URRE
Commences Lithium Exploration Drilling at the Columbus Basin Project
US$ 0.55+1.85%Trend Power :
Platinum Group Metals(Au-Cu-Gems)PTM.TO
Platinum Group Metals Ltd. Operational and Strategic Process ...
CA$ 0.31+0.00%Trend Power :
Devon Energy(Ngas-Oil)DVN
Announces $340 Million of Non-Core Asset Sales
US$ 35.40-0.81%Trend Power :
Precision Drilling(Oil)PD-UN.TO
Announces 2017Second Quarter Financial Results
CA$ 8.66-0.35%Trend Power :
2nd Quarter Report
AU$ 0.14+0.00%Trend Power :