Jaguar Mining Reports Third Quarter 2012 Financial Results, Sees Further Cash Cost Improvement17:27 EST Monday, November 12, 2012JAG - TSX/NYSEBELO HORIZONTE, Brazil, Nov. 12, 2012 /CNW/ - Jaguar Mining Inc. ("Jaguar" or the "Company") (JAG: TSX/NYSE) today reported a net loss of $21.6 million or $0.26 per fully diluted share for the quarter ended September 30, 2012.  This result compares to a net loss of $51.3 million or $0.61 per fully diluted share in the third quarter of 2011. The third quarter 2012 result includes a $4.7 million unrealized non-cash loss on the conversion option embedded in convertible debt (see note 1).  Excluding this non-operating item, Jaguar's third quarter result was a net loss of $16.9 million or $0.20 per fully diluted share.For the nine month period ended September 30, 2012, Jaguar reported a net loss of $35.2 million or $0.42 per fully diluted share.  This compares to a net loss of $32.0 million or $0.38 per fully diluted share in the nine month period ended September 30, 2011.Jaguar sold 23,307 ounces of gold at an average realized price of $1,648 per ounce in the three months ended September 30, 2012 compared to 41,390 ounces of gold at an average realized price of $1,692 per ounce in the three months ended September 30, 2011.  Average cash operating cost per ounce was $963 in the third quarter 2012 compared to $1,162 in the second quarter 2012 and $886 in the third quarter 2011.  Cash operating margin was $685 per ounce in the third quarter 2012 compared to $446 per ounce in the second quarter 2012 and $806 per ounce in the third quarter 2011.  The decrease in the Company's average cash operating cost per ounce during the third quarter 2012 as compared to the second quarter 2012 was attributable to Jaguar's on-going cost reduction program which included placing the Paciência operation on care and maintenance beginning in May 2012, reduced headcount at the mining operations and continued focus on reducing dilution and improving productivity.  The increase in average cash operating cost per ounce as compared to the third quarter of 2011 was largely attributable to lower total production which resulted in higher fixed cost absorption, together with the lower feed grade at Turmalina that increased the cost by $357 per ounce.  These were partially offset by the positive impact of changes in the exchange rate that reduced the cash operating cost by $180 per ounce and lower costs for labor and equipment maintenance that reduced the cash operating cost by $104 per ounce.Commenting on the Company's results and operations, David Petroff, Jaguar's President and CEO stated, "We are continuing to see positive results from our cost reduction program.  Our consolidated average cash cost per ounce improved by 17% compared to the second quarter and is down over 24% since the first quarter when we initiated the program.""We have adopted a new ground support system which is having the desired effect of making our mines safer and lowering dilution," Petroff continued.  "The introduction of these new standards lengthened the mining cycle time and caused congestion at Turmalina.  We expect our productivity will improve as our crews become more familiar with the new approach to ground support, as development at Turmalina advances, and when we acquire more suitable rock bolting equipment."Summary of Key Operating Results - Consolidated                      Three months ended Sept 30  Nine months ended Sept 30(unaudited)     2012   2011   2012   2011                  ($ in 000s, except per share amounts)                 Gold sales    $38,412  $70,041  $135,919  $185,739Ounces sold    23,307   41,390   82,378   121,368Average sales price $ / ounce    1,648   1,692   1,650   1,530Gross profit (loss)    5,522   17,716   (3,200)   41,536Net loss    (21,625)   (51,272)   (35,166)   (31,962)Basic loss per share    (0.26)   (0.61)   (0.42)   (0.38)Diluted loss per share    (0.26)   (0.61)   (0.42)   (0.38)Weighted avg. # of shares outstanding - basic    84,409,648   84,388,909   84,409,648   84,378,791Weighted avg. # of shares outstanding - diluted    84,409,648   84,388,909   84,409,648   84,378,791                  Key Operating Statistics - By Operation                  Three Months Ended September 30, 2012 Operating Data   OreProcessed(t000)  Feed Grade(g/t)  PlantRecoveryRate (%)  Production(ounces)  CashOperatingCost/t  CashOperatingCost/ounceTurmalina  115  2.70  89%  9,186   $ 79.60   $ 991Paciência  -   -  -   -   -   -Caeté 170  3.24  88%  13,840  76.70  945Total 285  3.03  88%  23,026   $ 77.80   $ 963                  Three Months Ended September 30, 2011 Operating Data   OreProcessed(t000)  Feed Grade(g/t)  PlantRecoveryRate (%)  Production(ounces)  CashOperatingCost/t  CashOperatingCost/ounceTurmalina  179  3.11  89%  16,204   $ 80.50   $ 906Paciência 119  2.60  91%  8,572  73.00  929Caeté 171  3.24  88%  15,885  78.10  841Total 469  3.03  89%  40,661   $ 77.70   $ 886                  Nine Months Ended September 30, 2012 Operating Data   OreProcessed(t000)  Feed Grade(g/t)  PlantRecoveryRate (%)  Production(ounces)  CashOperatingCost/t  CashOperatingCost/ounceTurmalina  427  2.32  90%  29,635   $ 79.50   $ 1,157Paciência 170  2.15  90%  9,987  92.30  1,536Caeté 485  3.12  89%  41,526  84.10  1,006Total 1,082  2.66  89%  81,148   $ 83.60   $ 1,126                  Nine Months Ended September 30, 2011 Operating Data   OreProcessed(t000)  Feed Grade(g/t)  PlantRecoveryRate (%)  Production(ounces)  CashOperatingCost/t  CashOperatingCost/ounceTurmalina  474  3.43  90%  47,931   $ 77.00   $ 821Paciência 352  3.07  92%  32,949  65.00  683Caeté 498  2.99  87%  41,487  72.80  879Total 1,324  3.17  90%  122,367   $ 72.20   $ 804                   TurmalinaDuring the quarter ended September 30, 2012, Turmalina produced 9,186 ounces of gold at a cash operating cost of $991 per ounce.  This compared to 16,204 ounces at a cash operating cost of $906 per ounce during the quarter ended September 30, 2011 and 10,435 ounces at a cash operating cost of $1,125 per ounce in the quarter ended June 30, 2012.The increase in Turmalina's cash operating cost during the quarter as compared to the same period last year was mainly attributable to lower production and lower feed grade that increased the cost by $276 per ounce, partially offset by the positive impact of exchange rates which reduced the cash operating cost by $176 per ounce. The 12% decrease in cash operating cost per ounce as compared to the second quarter of 2012 is the result of the implementation of the cost reduction program announced during the second quarter 2012.Production was lower quarter over quarter due to instability of the hanging and footwalls created by excessively large and inadequately supported excavations in the ore horizon leading to poor ground conditions together with congestion of mining operations in the wider zone of Turmalina's Ore Body A.  These issues are being addressed by a new ground control methodology and more emphasis on development.  However, during the transition to the new ground control methodology, installation of roof support and ground control measures is taking additional time to complete.  As a result of the extended mining cycle times, together with the shift in emphasis to development, production is not expected to increase immediately.Caeté During the quarter ended September 30, 2012, Caeté produced 13,840 ounces of gold at a cash operating cost of $945 per ounce.  This compared to 15,885 ounces at a cash operating cost of $841 per ounce during the quarter ended September 30, 2011 and 13,804 ounces at a cash operating cost of $953 per ounce in the quarter ended June 30, 2012.The increase in Caeté's cash operating cost during the quarter as compared to the same period last year was attributable to higher expenses for internal services, mining services and mining materials that increased the cash operating cost by $275, partially offset by the positive impact of changing exchange rates that reduced the cash operating cost by $165 per ounce.PaciênciaThe Paciência operation continued on care and maintenance during the quarter ended September 30, 2012.2012 Estimated Production and Cash Operating CostBased on the operating results for the first three quarters of the year and the continuing implementation of the Restructuring and Turnaround Plan, Jaguar is revising its outlook for both production and cash operating costs in 2012.The Company now expects 2012 gold production in the range of 100,000 to 110,000 ounces.  On this new volume, cash operating costs are expected to be in the range of $1,050 to $1,150 per ounce (based on an assumed exchange rate of R$2.0 per US$).The Company is in the process of reevaluating its production and cost targets for 2013.Conference Call DetailsJaguar will hold a conference call to discuss the third quarter results and operations on Tuesday, November 13, 2012 at 10:00 a.m. ET.  The call can be accessed via telephone or webcast.Live teleconference access:         US Dial In (Toll Free):   1-866-524-3160International Dial In:   1-412-317-6760Live audio webcast:      www.jaguarmining.com     Replay:         US Toll Free:       1-877-344-7529International Toll:      1-412-317-0088Conference Number:      10020886About Jaguar MiningJaguar is a junior gold producer in Brazil with operations in a prolific greenstone belt in the state of Minas Gerais.  Jaguar also has the Gurupi Project in Northern Brazil in the state of Maranhão and additional mineral resources at its approximate 210,000-hectare land base in Brazil.  Additional information is available on the Company's website at www.jaguarmining.com.Forward Looking StatementsCertain statements in this press release constitute "Forward-Looking Statements" within the meaning of the U.S. Private Securities Litigation Reform Act of 1995 and Canadian securities legislation.  These Forward-Looking Statements include, but are not limited to, statements concerning the Company's 2012 estimated gold production and cash operating cost.  Forward-Looking Statements can be identified by the use of words, such as "are expected", "is forecast", "is targeted", "approximately" or variations of such words and phrases or statements that certain actions, events or results "may", "could", "would", "might", or "will" be taken, occur or be achieved.  Forward-Looking Statements involve known and unknown risks, uncertainties and other factors which may cause the actual results or performance to be materially different from any future results or performance expressed or implied by the Forward-Looking Statements.These factors include the inherent risks involved in the exploration and development of mineral properties, the uncertainties involved in interpreting drilling results and other geological data, fluctuating gold prices and monetary exchange rates, the possibility of project cost delays and overruns or unanticipated costs and expenses, uncertainties relating to the availability and costs of financing needed in the future, uncertainties related to production rates, timing of production and the cash and total costs of production, changes in applicable laws including laws related to mining development, environmental protection, and the protection of the health and safety of mine workers, the availability of labor and equipment, the possibility of labor strikes and work stoppages and changes in general economic conditions.  Although the Company has attempted to identify important factors that could cause actual actions, events or results to differ materially from those described in Forward-Looking Statements, there may be other factors that could cause actions, events or results to differ from those anticipated, estimated or intended.These Forward-Looking Statements represent the Company's views as of the date of this press release.  The Company anticipates that subsequent events and developments may cause the Company's views to change.  The Company does not undertake to update any forward-looking statements, either written or oral, that may be made from time to time by or on behalf of the Company subsequent to the date of this discussion except as required by law. For a discussion of important factors affecting the Company, including fluctuations in the price of gold and exchange rates, uncertainty in the calculation of mineral resources, competition, uncertainty concerning geological conditions and governmental regulations and assumptions underlying the Company's forward-looking statements, see the "CAUTIONARY NOTE" regarding forward-looking statements and "RISK FACTORS" in the Company's Annual Information Form for the year ended December 31, 2011 filed on SEDAR and available at http://www.sedar.com and the Company's Annual Report on Form 40-F for the year ended December 31, 2011 filed with the United States Securities and Exchange Commission and available at www.sec.gov.Note: As required by applicable Canadian rules, effective the first quarter of 2011, Jaguar has prepared its financial statements in accordance with International Financial Reporting Standards ("IFRS").Additional details will be available in the Company's filings on SEDAR and EDGAR, including Management's Discussion and Analysis of Financial Condition and Results of Operations and Consolidated Financial Statements for the period ended September 30, 2012.The following tables contain unaudited information for the quarter and nine month period ended September 30, 2012.  The data presented are subject to final adjustment, but are believed to be materially accurate. Jaguar's financial statements for the period ended September 30, 2012, are expected to be filed on SEDAR and EDGAR on November 12, 2012.  Readers should refer to those filings for the final financial statements and the associated footnotes which are an integral part of the tables.JAGUAR MINING INC.                     Condensed Interim Consolidated Balance Sheets         (Expressed in thousands of U.S. dollars)                   (Unaudited)              September 30,2012   December 31,2011                    Assets         Current assets:          Cash and cash equivalents    $19,991  $74,475 Inventory    26,729   34,060 Prepaid expenses and sundry assets    21,854   25,541 Derivatives    90   -      68,664   134,076            Prepaid expenses and sundry assets     54,735   48,068 Restricted cash     409   909 Property, plant and equipment     350,136   388,675 Mineral exploration projects     94,218   88,938                $568,162  $660,666           Liabilities and Shareholders' Equity         Current liabilities:          Accounts payable and accrued liabilities   $31,892  $34,922 Notes payable     28,541   22,517 Income taxes payable     17,993   18,953 Reclamation provisions    3,985   2,082 Other provisions    5,148   4,347 Deferred compensation liabilities    88   2,953 Other liabilities     -   1,475      87,647   87,249            Notes payable     237,117   228,938 Option component of convertible notes    12,920   79,931 Deferred income taxes     10,868   8,635 Reclamation provisions    15,968   15,495 Deferred compensation liabilities    574   2,270 Other liabilities     106   339 Total liabilities    365,200   422,857           Shareholders' equity:          Share capital    370,043   370,043 Stock options     9,163   14,207 Contributed surplus     8,777   3,414 Deficit    (185,021)   (149,855) Total equity attributable to equity shareholders of the Company    202,962   237,809                $568,162  $660,666                       JAGUAR MINING INC.                                 Condensed Interim Consolidated Statements of Operations and Comprehensive Loss(Expressed in thousands of U.S. dollars, except per share amounts)                     (Unaudited)                    Three MonthsEndedSeptember 30,2012   Three MonthsEndedSeptember 30,2011   Nine MonthsEndedSeptember 30,2012   Nine MonthsEndedSeptember 30,2011                 Gold sales  $38,412  $70,041  $135,919  $185,739Production costs   (25,183)   (40,602)   (107,833)   (110,494)Stock-based compensation   100   (189)   443   (212)Depletion and amortization   (7,807)   (11,534)   (31,729)   (33,497)Gross profit (loss)   5,522   17,716   (3,200)   41,536                 Operating expenses:                 Exploration   730   230   801   1,281 Paciência   3,126   -   3,126   - Stock-based compensation    427   3,818   (1,868)   734 Administration   5,885   6,044   14,831   16,718 Management fees   -   165   -   690 Amortization   297   316   878   986 Other   795   438   1,786   1,509 Total operating expenses   11,260   11,011   19,554   21,918                 Income (loss) before the following   (5,738)   6,705   (22,754)   19,618                 (Gain) loss on derivatives   (16)   1,219   (130)   805(Gain) loss on conversion option                    embedded in convertible debt   4,741   27,260   (67,011)   19,420Foreign exchange loss   734   18,559   5,245   8,944Accretion expense   527   648   1,660   1,842Interest expense    7,177   7,203   21,377   19,960Interest income   (617)   (2,854)   (3,039)   (7,186)(Gain) loss on disposition of property   197   (595)   (171)   (1,593)Impairment of Paciência property   -   -   47,692   -Other non-operating expenses (income)   2,439   (30)   2,973   (349)Total other expenses   15,182   51,410   8,596   41,843                 Loss before income taxes   (20,920)   (44,705)   (31,350)   (22,225)Income taxes                  Current income taxes   303   979   924   2,911 Deferred income taxes    402   5,588   2,892   6,826Total income taxes    705   6,567   3,816   9,737                 Net loss and comprehensive loss for the period  $(21,625)  $(51,272)  $(35,166)  $(31,962)                 Basic and diluted loss per share   $(0.26)  $(0.61)  $(0.42)  $(0.38)                 Weighted average number of                  common shares outstanding - basic   84,409,648   84,388,909   84,409,648   84,378,791Weighted average number of                  common shares outstanding - diluted   84,409,648   84,388,909   84,409,648   84,378,791                                     JAGUAR MINING INC.                                 Condensed Interim Consolidated Statements of Cash Flows            (Expressed in thousands of U.S. dollars)                                 (Unaudited)                    Three MonthsEndedSeptember 30,2012   Three MonthsEndedSeptember 30,2011   Nine MonthsEndedSeptember 30,2012   Nine MonthsEndedSeptember 30,2011                 Cash provided by (used in):                 Operating activities:                  Net loss and comprehensive loss for the period  $(21,625)  $(51,272)  $(35,166)  $(31,962)  Adjustments to reconcile net earnings to net cash                   provided from (used in) operating activities:                   Unrealized foreign exchange (gain) loss    (1,981)   23,151   (3,715)   16,402   Stock-based compensation expense (recovered)   327   4,007   (2,311)   946   Interest expense   7,177   7,203   21,377   19,960   Accretion of interest income   -   -   -   (188)   Accretion expense   527   648   1,660   1,842   Income taxes recovered   -   (36)   -   (140)   Deferred income taxes   402   5,588   2,892   6,826   Depletion and amortization   8,104   11,850   32,607   34,483   Provision and loss on disposition of PPE   2,586   -   3,133   -   Write-down of Paciência inventory    -   -   2,394   -   Impairment of Paciência property   -   -   47,692   -   Unrealized (gain) loss on derivatives   23   1,090   (90)   1,061   Unrealized (gain) loss on option                    component of convertible note   4,741   27,260   (67,011)   19,420 Reclamation expenditures   (73)   (73)   (186)   (99)    208   29,416   3,276   68,551Change in non-cash operating working capital:                   Inventory   1,854   388   5,586   1,321   Prepaid expenses and sundry assets   (3,447)   (82)   (10,595)   (7,559)   Accounts payable and accrued liabilities   (1,732)   1,297   (3,973)   6,678   Income taxes payable   364   (785)   (961)   2,540   Deferred compensation liability   (36)   (255)   (2,304)   (501)   Other provisions   189   -   802   -    (2,600)   29,979   (8,169)   71,030Financing activities:                   Issuance of common shares  -   164   -   164   Decrease in restricted cash   500   -   499   -   Repayment of debt   (7,196)   (7,115)   (9,415)   (15,049)   Increase in debt   6,200   6,000   13,200   105,313   Interest paid   (3,229)   (4,387)   (10,223)   (9,002)   Other liabilities   1   333   (1,707)   278    (3,724)   (5,005)   (7,646)   81,704Investing activities:                   Mineral exploration projects   (973)   (5,062)   (7,935)   (9,674)   Purchase of property, plant and equipment   (6,781)   (28,820)   (37,795)   (70,420)   Proceeds from disposition of property   187   -   869   -    (7,567)   (33,882)   (44,861)   (80,094)Effect of foreign exchange on non-U.S. dollar                   denominated cash and cash equivalents   1,938   (14,767)   6,192   (10,138)Increase (decrease) in cash and cash equivalents   (11,953)   (23,675)   (54,484)   62,502Cash and cash equivalents, beginning of period   31,944   125,400   74,475   39,223Cash and cash equivalents, end of period  $19,991  $101,725  $19,991  $101,725                 Note 1 - Fair Valuation of Derivative Financial Instruments - Option Component of Convertible NotesIFRS requires that derivative financial instruments be valued on a periodic basis. The option components of the Company's convertible notes are considered derivative financial instruments and are fair valued using the Crank - Nicolson valuation model using inputs, such as volatility and credit spread.The carrying amount of the option components of the convertible notes was $12.9 million at September 30, 2012 (December 31, 2011 - $79.9 million). The change in fair value of $4.7 million (a loss) and $67.0 million (a gain) for the three and nine month periods ended September 30, 2012, respectively, is shown as a (gain) loss on conversion option embedded in convertible debt in the Statements of Operations and Comprehensive Income (three and nine month periods ended September 30, 2011 - $27.3 million loss and $19.4 million loss, respectively).Non IFRS ReconciliationsSummary of  Cash Operating Cost per Ounce of Gold Produced       Three months ended   Nine Months ended       September 30, 2012   September 30, 2012Production costs per statement of operations     $22,417,000  $93,801,000Change in inventory      (234,874)   (2,421,287)Operational cost of gold produced      22,182,126   91,379,713 divided by            Gold produced (oz)      23,026   81,146 equals           Cost per oz of gold produced     $963  $1,126            Cash Operating Margin Per Ounce of Gold      Three months ended Sep 30  Nine months ended Sep 30       2012   2011   2012   2011Average sales price per oz of gold     $1,648  $1,692  $1,650  $1,530 less                   Cash operating cost per oz of gold produced      963   886   1,126   804 equals                   Cash operating margin per oz of gold     $685  $806  $524  $726   SOURCE: Jaguar Mining Inc.For further information: Company Contacts Roger Hendriksen Vice President, Investor Relations 603-410-4888 rhendriksen@jaguarmining.com Valéria Rezende DioDato Director of Communication 011-55-31-4042-1249 valeria@jaguarmining.com