Table Of Content

Fortuna Silver Mines Inc.: Lindero Property, Salta Province, Argentina Technical Report Effective Date: October 31, 2017 Prepared by Eric Chapman, P.Geo. Vice President of Technical Services - Fortuna Silver Mines Inc. Edwin Gutierrez, SME Registered Member Technical Services Manager – Fortuna Silver Mines Inc. Geoff Allard, PE Consultant – Allard Engineering Services LLC Denys Parra Murrugarra, SME Registered Member General Manager – Anddes Asociados S.A.C. Suite 650, 200 Burrard Street, Vancouver, BC, V6C 3L6 Tel: (604) 484 4085, Fax: (604) 484 4029 Fortuna Silver Mines Inc.: Lindero Property Technical Report Date and Signature Page Technical Report Fortuna Silver Mines Inc.: Lindero Property, Salta Province, Argentina Effective date of this report is October 31, 2017 Issued by: Fortuna Silver Mines Inc. Eric Chapman 31st October 2017 [signed and sealed] Date Edwin Gutierrez 31st October 2017 [signed] Date Geoff Allard 31st October 2017 [signed] Date Denys Parra Murrugarra 31st October 2017 [signed] Date October 31, 2017 Fortuna Silver Mines Inc.: Lindero Property Technical Report Contents 1  Summary ......................................................................................................................... 22    Introduction .................................................................................................... 22    Property description, location and ownership ................................................ 22    History ............................................................................................................ 23    Geology and mineralization ............................................................................ 24    Exploration, drilling and sampling ................................................................. 26    Data verification ............................................................................................. 28    Mineral processing and metallurgical testing ................................................. 28    Mineral Resources and Mineral Reserves ...................................................... 30    Mining methods .............................................................................................. 31    Recovery methods .......................................................................................... 32    Project infrastructure ...................................................................................... 33    Market studies and contracts .......................................................................... 33    Environmental studies and permitting ............................................................ 34    Capital and operating costs ............................................................................. 35    Economic analysis .......................................................................................... 35    Other relevant data and information ............................................................... 36    Conclusions, risks, and opportunities ............................................................. 36    Recommendations .......................................................................................... 38  2  Introduction .................................................................................................................... 40    Report purpose ................................................................................................ 40    Previous technical reports ............................................................................... 40    Scope of personal inspection .......................................................................... 41    QP responsibilities .......................................................................................... 41    Effective dates ................................................................................................ 42    Information sources and references ................................................................ 42  3  Reliance on Other Experts .............................................................................................. 44  4  Property Description and Location ................................................................................. 45    Property and title in Argentina ....................................................................... 45    Mineral title administration ........................................................................ 45    Mineral title types ....................................................................................... 47    Surface rights .............................................................................................. 47    Environmental regulations .......................................................................... 47    Tenure ............................................................................................................. 49  October 31, 2017 Fortuna Silver Mines Inc.: Lindero Property Technical Report   Surface rights .................................................................................................. 50    Royalties ......................................................................................................... 51    Environmental aspects .................................................................................... 51    Permits ............................................................................................................ 52    Comment on Section 4 ................................................................................... 52  5  Accessibility, Climate, Local Resources, Infrastructure and Physiography ................... 53    Access ............................................................................................................. 53    Climate ............................................................................................................ 53    Topography, elevation and vegetation ............................................................ 54    Infrastructure .................................................................................................. 54    Sufficiency of surface rights ........................................................................... 55    Comment on Section 5 ................................................................................... 56  6  History ............................................................................................................................ 57    Ownership and exploration history ................................................................. 57    Prior Mineral Resources and Mineral Reserve estimates ............................... 58  7  Geological Setting and Mineralization ........................................................................... 59    Regional geology ............................................................................................ 59    Local geology ................................................................................................. 60    Lindero Deposit .............................................................................................. 61    Lithology .................................................................................................... 61    Alteration .................................................................................................... 65    Structural setting ......................................................................................... 66    Mineralization ............................................................................................. 66    Hypogene mineralogy................................................................................. 67    Vein types ................................................................................................... 68    Relationship between intrusive phases and mineralization ........................ 69    Oxidation and supergene effects ................................................................. 70    Evolution of the system .............................................................................. 71    Arizaro Deposit ............................................................................................... 75    Local geology ............................................................................................. 75    Lithology .................................................................................................... 77    Alteration .................................................................................................... 78    Mineralization ............................................................................................. 79    Comment on Section 7 ................................................................................... 80  8  Deposit Types ................................................................................................................. 81    Mineral deposit type ....................................................................................... 81  October 31, 2017 Fortuna Silver Mines Inc.: Lindero Property Technical Report   Tectonic setting and age ............................................................................. 82    Host rocks ................................................................................................... 82    Ore and gangue mineralogy and texture ..................................................... 82    Wall rock alteration .................................................................................... 82    Structural setting ......................................................................................... 82    Typical size and dimensions ....................................................................... 82    Weathering effects ...................................................................................... 83    Geochemical and geophysical signature ..................................................... 83    Mineralization controls and exploration guides ......................................... 83    Fluid inclusions .......................................................................................... 83    Comparison with Maricunga belt deposits ..................................................... 83    Comment on Section 8 ................................................................................... 84  9  Exploration ..................................................................................................................... 85    Goldrock campaign (2000 to 2001) ................................................................ 85    Geological mapping .................................................................................... 85    Soil (talus fines) geochemistry ................................................................... 86    Trenching .................................................................................................... 86    Rio Tinto campaign (2002 to 2003) ............................................................... 87    Geological mapping .................................................................................... 87    Geophysics ................................................................................................. 88    Road-cut sampling ...................................................................................... 88    Drilling and core logging ............................................................................ 88    Goldrock campaign (2005 to 2008) ................................................................ 89    Geological mapping .................................................................................... 89    Trenching .................................................................................................... 89    Topographic survey .................................................................................... 90    Goldrock campaign (2010) ............................................................................. 90    Fortuna campaign (2016 to 2017) .................................................................. 92    Geological mapping and relogging ............................................................. 92    Soluble copper investigation ...................................................................... 92    Heterogeneity test ....................................................................................... 93    Geotechnical studies ....................................................................................... 94    Hydrogeological studies ................................................................................. 95    Petrography ..................................................................................................... 95    Exploration potential ...................................................................................... 96    Lindero Deposit .......................................................................................... 96    Arizaro Deposit and other prospects .......................................................... 96    Comment on Section 9 ................................................................................... 98  October 31, 2017 Fortuna Silver Mines Inc.: Lindero Property Technical Report 10  Drilling ............................................................................................................................ 99    Introduction .................................................................................................... 99    Rio Tinto campaign (2002) ........................................................................... 100    Goldrock campaign (2005 to 2010) .............................................................. 101    Fortuna campaign (2016) .............................................................................. 101    Geological and geotechnical logging procedures ......................................... 102    Mansfield lithological core logging (2005 to 2010) ................................. 102    Fortuna relogging and drilling (2016) ...................................................... 103    Drill core recovery ........................................................................................ 104    Extent of drilling ........................................................................................... 104    Drill hole collar surveys ............................................................................... 104    Downhole surveys ........................................................................................ 105    Drill sections ................................................................................................. 105    Sample length versus true thickness ............................................................. 111    Summary of drill intercepts .......................................................................... 111    Comment on Section 10 ............................................................................... 114  11  Sample Preparation, Analyses, and Security ................................................................ 115    Sample preparation prior to dispatch of samples .......................................... 115    Core samples ............................................................................................ 115    Trench samples ......................................................................................... 116    Bulk density determination ....................................................................... 116    Dispatch of samples, sample preparation, assaying and analytical procedures ..................................................................................................... 117    Sample dispatch ........................................................................................ 117    Sample preparation and assaying ............................................................. 117    Laboratory accreditation ............................................................................... 119    Sample security and chain of custody .......................................................... 119    Quality control measures .............................................................................. 120    Rio Tinto ................................................................................................... 120    Goldrock ................................................................................................... 120    Fortuna ...................................................................................................... 121    Standard reference materials .................................................................... 121    Blank samples ........................................................................................... 123    Duplicate samples ..................................................................................... 124    Conclusions regarding quality control results .......................................... 130    Comment on Section 11 ............................................................................... 131 October 31, 2017 Fortuna Silver Mines Inc.: Lindero Property Technical Report 12  Data Verification .......................................................................................................... 132    Introduction .................................................................................................. 132    Database ........................................................................................................ 132    Collars and downhole surveys ...................................................................... 133    Collars....................................................................................................... 133    Downhole surveys .................................................................................... 133    Lithological logs ........................................................................................... 134    Assays ........................................................................................................... 134    Rio Tinto ................................................................................................... 134    Goldrock ................................................................................................... 134    Fortuna ...................................................................................................... 136    Density measurements .................................................................................. 136    Metallurgical results ..................................................................................... 137    Geotechnical parameters ............................................................................... 137    Comment on Section 12 ............................................................................... 137  13  Mineral Processing and Metallurgical Testing ............................................................. 139    Prior metallurgical testwork ......................................................................... 139    Samples ..................................................................................................... 139    Gold extraction ......................................................................................... 140    Copper/silver extraction ........................................................................... 144    Cyanide consumption ............................................................................... 144    Additional information ............................................................................. 147    Current metallurgical testwork ..................................................................... 147    Samples ..................................................................................................... 148    Sample preparation ................................................................................... 149    Physical testing ......................................................................................... 152    Leach testing ............................................................................................. 154    Gold extraction ......................................................................................... 156    Copper/silver extraction ........................................................................... 158    Cyanide consumption ............................................................................... 158    Weakly acid dissociable (WAD) cyanide determinations ........................ 158    SART laboratory testwork ........................................................................ 159    Carbon adsorption .................................................................................... 159    Heap leach modeling .................................................................................... 161    Conclusions .................................................................................................. 161    Additional work ............................................................................................ 162    Comments on Section 13 .............................................................................. 162  October 31, 2017 Fortuna Silver Mines Inc.: Lindero Property Technical Report 14  Mineral Resource Estimates ......................................................................................... 164    Introduction .................................................................................................. 164    Disclosure ..................................................................................................... 164    Known issues that materially affect Mineral Resources ........................... 164    Assumptions, methods and parameters ........................................................ 165    Supplied data, data transformations and data validation .............................. 166    Data transformations ................................................................................ 166    Software .................................................................................................... 166    Data preparation ....................................................................................... 166    Data validation .......................................................................................... 166    Geological interpretation and domaining ..................................................... 167    Probabilistic grade shells .......................................................................... 169    Exploratory data analysis .............................................................................. 170    Compositing of assay intervals ................................................................. 170    Statistical analysis of composites ............................................................. 170    Contact analysis ........................................................................................ 171    Extreme value treatment ........................................................................... 172    Grade correlation ...................................................................................... 175    Unfolding .................................................................................................. 175    Continuity analysis ................................................................................... 175    Variogram modeling ................................................................................. 176    Opinion on the quality of the modeled variograms .................................. 178    Block model .............................................................................................. 178    Grade estimation ........................................................................................... 179    Dynamic anisotropy .................................................................................. 180    Density .......................................................................................................... 181    Block model validation ................................................................................. 182    Global bias ................................................................................................ 182    Local bias .................................................................................................. 182    Mineral Resource classification .................................................................... 185    Geological continuity ............................................................................... 185    Data density and orientation ..................................................................... 185    Data accuracy and precision ..................................................................... 186    Spatial grade continuity ............................................................................ 186    Classification ............................................................................................ 186    Comments regarding classification .......................................................... 187    Mineral Resource reporting .......................................................................... 189    Reasonable prospects for eventual economic extraction .......................... 189    Mineral Resource statement ..................................................................... 189  October 31, 2017 Fortuna Silver Mines Inc.: Lindero Property Technical Report   Mineral Resources by key geologic attributes .......................................... 190    Comparison to previous estimate ............................................................. 193    Comment on Section 14 ............................................................................... 194  15  Mineral Reserve Estimates ........................................................................................... 195    Mineral Reserve methodology ...................................................................... 195    Mineral Resource handover .......................................................................... 196    Key mining parameters ................................................................................. 196    Dilution and mining loss........................................................................... 196    Pit slope parameters .................................................................................. 196    Metallurgical recoveries ........................................................................... 196    LG optimization parameters ..................................................................... 197    Mineral Reserves .......................................................................................... 198    Comparison to previous reserve estimate ................................................. 198    Comments on Section 15 .............................................................................. 198  16  Mining Methods ........................................................................................................... 199    Material types ............................................................................................... 199    Waste material .......................................................................................... 199    Ore material types ..................................................................................... 199    Mining methods ............................................................................................ 199    Pit designs ................................................................................................. 199    Bench height ............................................................................................. 200    Ultimate pit and pit phase design slopes................................................... 200    Haulage considerations ............................................................................. 202    Ultimate pit and pit phasing ...................................................................... 202    Mine waste dump.......................................................................................... 209    Mine production schedule ............................................................................ 211    Equipment selection and productivities ........................................................ 213    Mine personnel ............................................................................................. 214    Comments on Section 16 .............................................................................. 215  17  Recovery Methods ........................................................................................................ 216    Proposed process description ........................................................................ 216    Fundamental design criteria ...................................................................... 217    Flowsheets ................................................................................................ 218    Crushing ................................................................................................... 221    Flake breaker ............................................................................................ 221    Agglomeration .......................................................................................... 221    Stacking .................................................................................................... 222  October 31, 2017 Fortuna Silver Mines Inc.: Lindero Property Technical Report   Heap leaching and solution handling ........................................................ 224    Leach pad .................................................................................................. 224    Solution collection system ........................................................................ 225    Overliner ................................................................................................... 225    Ponds ........................................................................................................ 225    SART plant ............................................................................................... 226    Carbon-in-column ..................................................................................... 227    Acid washing ............................................................................................ 227    Cold cyanide wash .................................................................................... 228    Elution ...................................................................................................... 228    Electrowinning ......................................................................................... 229    Refinery .................................................................................................... 229    Carbon handling ....................................................................................... 229    Cyanide preparation .................................................................................. 230    Reagents ................................................................................................... 230    Utilities ..................................................................................................... 231    Water ........................................................................................................ 231    Water balance ........................................................................................... 232    Requirements for energy, water, and process materials ............................... 236    Other Considerations .................................................................................... 236    Comment on Section 17 ............................................................................... 237  18  Project Infrastructure .................................................................................................... 238    Access roads and site access ......................................................................... 239    Power supply ................................................................................................ 239    Power requirements .................................................................................. 239    Construction and emergency power ......................................................... 240    Water supply ................................................................................................. 240    Water source – wells................................................................................. 241    Raw water and fire water distribution ...................................................... 243    Potable water system ................................................................................ 243    Sewage treatment system.......................................................................... 243    Process area buildings .................................................................................. 243    Administration building ............................................................................ 243    Guard house .............................................................................................. 244    Process shop ............................................................................................. 244    Warehouse ................................................................................................ 244    ADR plant building .................................................................................. 244    SART filter building ................................................................................. 244  October 31, 2017

Description:
Figure 13.12 Metals distribution by size – Met 1 Existing Core HPGR-crushed . 152 HPGR-crushed ore. • Conveyor stacking was included from startup. • Two-stage leaching was included to increase preg grades and reduce overall flowrate to the ADR .. scheduling and process design. This would
ebook img

Lindero Project, Argentina PDF

346 Pages·2017·16.05 MB·English
by  
Save to my drive
Quick download
Download

Download Lindero Project, Argentina PDF Free - Full Version

by Unknow| 2017| 346 pages| 16.05| English

Download Lindero Project, Argentina by in PDF format completely FREE. No registration required, no payment needed. Get instant access to this valuable resource on PDFdrive.to!

Free Download PDF

About Lindero Project, Argentina

Figure 13.12 Metals distribution by size – Met 1 Existing Core HPGR-crushed . 152 HPGR-crushed ore. • Conveyor stacking was included from startup. • Two-stage leaching was included to increase preg grades and reduce overall flowrate to the ADR .. scheduling and process design. This would

Detailed Information

Author:Unknown
Publication Year:2017
Pages:346
Language:English
File Size:16.05
Format:PDF
Price:FREE
Download Free PDF

Safe & Secure Download - No registration required

Why Choose PDFdrive for Your Free Lindero Project, Argentina Download?

  • 100% Free: No hidden fees or subscriptions required for one book every day.
  • No Registration: Immediate access is available without creating accounts for one book every day.
  • Safe and Secure: Clean downloads without malware or viruses
  • Multiple Formats: PDF, MOBI, Mpub,... optimized for all devices
  • Educational Resource: Supporting knowledge sharing and learning

Free Books Similar to Lindero Project, Argentina

Frequently Asked Questions

Is it really free to download Lindero Project, Argentina PDF?

Yes, on https://PDFdrive.to you can download Lindero Project, Argentina by completely free. We don't require any payment, subscription, or registration to access this PDF file. For 3 books every day.

How can I read Lindero Project, Argentina on my mobile device?

After downloading Lindero Project, Argentina PDF, you can open it with any PDF reader app on your phone or tablet. We recommend using Adobe Acrobat Reader, Apple Books, or Google Play Books for the best reading experience.

Is this the full version of Lindero Project, Argentina?

Yes, this is the complete PDF version of Lindero Project, Argentina by Unknow. You will be able to read the entire content as in the printed version without missing any pages.

Is it legal to download Lindero Project, Argentina PDF for free?

https://PDFdrive.to provides links to free educational resources available online. We do not store any files on our servers. Please be aware of copyright laws in your country before downloading.

The materials shared are intended for research, educational, and personal use in accordance with fair use principles.

We use cookies

We use cookies to ensure you get the best browsing experience on our website. By clicking "Accept Cookies", you agree that we can store cookies on your device in accordance with our Terms and Privacy.