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Alhambra Resources Ltd. |
CALGARY, ALBERTA - Alhambra Resources Ltd. ("Alhambra" or the "Corporation") is pleased to announce the results of a Canadian Institute of Mining, Metallurgy and Petroleum ("CIM") compliant Preliminary Assessment or Scoping Study (the "Study") on the Uzboy gold deposit, one of six advanced exploration areas located within Alhambra's 100% owned Kazakhstan Uzboy Gold Project (the "Uzboy Project"). The Study results demonstrate that the Uzboy gold deposit generates positive Net Present Value ("NPV") at gold prices well below that of current gold prices and recommends completion of a pre-feasibility study on the Uzboy gold deposit. The Study will be filed on Sedar at www.sedar.com.
The Study titled "Updated Scoping Study On The Oxide, Transitional, and Primary Resources at the Uzboy Gold Deposit, Akmola Oblast, Kazakhstan" dated December 10, 2009, was independently conducted and prepared by ACA Howe International Limited ("ACA Howe") and is based on the Canadian National Instrument ("NI") 43-101 compliant resource estimate established by ACA Howe in its Technical Report titled, "Resource and Reserve Estimation Study on the Uzboy Gold Deposit, Akmola Oblast, Kazakhstan for Alhambra Resources Ltd", dated June 2, 2008, having an effective date of December 31, 2007 (see TABLES 3 & 4).
As background to the timing, completion and delivery of the Scoping Study, in September 2008, Alhambra was served with a legal claim filed in Kazakhstan that sought to invalidate the original Purchase and Sale Agreement dated March 2002, whereby Alhambra purchased 100% of Saga Creek Gold Company LLP ("Saga Creek"), its Kazakhstan operating subsidiary. Even though Alhambra disagreed with this claim from the outset, various levels of courts within Kazakhstan upheld this claim resulting in the re-registration of Saga Creek into the names of the claimants in February 2009. A subsequent appeal to the Supreme Court of Kazakhstan lead to the Supreme Court reversing the decision of the lower courts and dismissing the plaintiffs' claim. In September 2009, the Corporation was successful in re-registering the units of Saga Creek back into Alhambra's name. The successful resolution of the law-suit enabled Alhambra to complete the Scoping Study.
Highlights of the scoping study includeMr. John Komarnicki, Chairman and CEO of Alhambra stated, "The ACA Howe Scoping Study has confirmed that the Uzboy gold deposit is potentially a development project of significant merit with robust economics. After further diamond drilling anticipated during 2010 to establish additional gold mineralization and upgrade our mineral resources, we plan to proceed with a pre-feasibility study as the next step towards production development. We believe that the Uzboy gold deposit has the potential to develop in to a long life mine, one that will be the corner stone to our growth and to the future of the Corporation."
Summary - PIT OptimizationsOpen pit optimization was completed for 16 scenarios, with positive NPV being generated for all input and operating scenarios. Each scenario tested a range of resource, capital and geotechnical inputs. A number of these scenarios included Inferred mineral resources (Scenarios 2.x.x) and a 60 degree pit slope angle (Scenarios x.x.2) in order to establish the potential for further improvements in NPV.
All scenarios were positive, however, eight scenarios were excluded from the analysis as they were completed at a 0.0 grams per tonne ("g/t') gold cut-off grade.
A summary of major parameters for the selected discounted optimal pits generated at a cut-off of 0.4 g/t gold, discounted at 10%, ranged in value from US$90 to US$203 M as summarized in TABLE 1.
TABLE 1 - Summary of Discounted Optimal Pits| Scenario | Pit # | Life of Project (years) |
Total pit tonnage (M t) |
Mineable tonnage (M t) |
Gold Grade (g/t) |
Recoverable Gold (000' oz) |
Gold Produced (000' oz) |
NPV (M$) |
| 1.1.1 | 33 | 5 | 62.9 | 9.1 | 1.79 | 525 | 410 | 90 |
| 1.1.2 | 34 | 7 | 91.5 | 12.4 | 1.74 | 690 | 549 | 126 |
| 1.2.1 | 35 | 3-4 | 71.0 | 9.8 | 1.75 | 550 | 431 | 90 |
| 1.2.2 | 35 | 5 | 134.6 | 15.5 | 1.63 | 812 | 651 | 143 |
| 2.1.1 | 34 | 9 | 105.2 | 16.5 | 1.50 | 800 | 625 | 113 |
| 2.1.2 | 32 | 12-13 | 161.3 | 23.0 | 1.52 | 1,122 | 896 | 165 |
| 2.2.1 | 32 | 6 | 109.8 | 16.9 | 1.50 | 813 | 636 | 130 |
| 2.2.2 | 31 | 8 | 173.3 | 23.7 | 1.50 | 1,143 | 914 | 203 |
Of the eight scenarios completed at the 0.4 g/t gold cut-off, Scenarios 1.2.1, 2.2.1 and 2.2.2 were chosen as being representative of the range of values of the discounted optimal pits.
A summary of the input parameters to determine the discounted optimal pits shown in TABLE 1 are shown in TABLE 2.
TABLE 2 - Summary of Input Parameters| Parameter | Unit | Scenario x.1.x | Scenario x.2.x |
| Initial data | |||
| Mining method | open pit | open pit | |
| Types of mineralization | oxide, transitional and sulphide | oxide, transitional and sulphide | |
| Processing method | |||
| oxide | heap leaching | heap leaching | |
| transitional and sulphide | grinding and vat leaching | grinding and vat leaching | |
| Capex for Primary Plant | $US | $60 million | $80 million |
| Annual Replacement Costs | $US | $500,000 | $500,000 |
| Extracted Element | gold | gold | |
| Resource Category | |||
| block model - 1.x.x | Measured and Indicated | Measured and Indicated | |
| block model - 2.x.x | Measured, Indicated and Inferred | Measured, Indicated and Inferred | |
| Mining | |||
| oxide | $/t | 1.95 | 1.95 |
| transitional | $/t | 1.11 | 0.95 |
| suphide | $/t | 1.11 | 0.95 |
| Mining Losses | |||
| oxide | % | 6.2 | 6.2 |
| transitional and sulphide | % | 7.0 | 7.0 |
| Mining Dilution | |||
| oxide | % | 8.4 | 8.4 |
| transitional and sulphide | % | 8.0 | 8.0 |
| Processing | |||
| Processing Costs | |||
| oxide | $/t | 3.85 | 3.85 |
| transitional | $/t | 6.57 | 5.92 |
| sulphide | $/t | 6.57 | 5.92 |
| Processing Recovery | |||
| oxide | % | 70.00 | 70.00 |
| transitional | % | 74.74 | 74.74 |
| sulphide | |||
| West Zone | % | 90.20 | 90.20 |
| East Zone | % | 92.05 | 92.05 |
| Pricing | |||
| Gold price | $/oz | 850.00 | 850.00 |
| Payment | % | 99.05 | 99.05 |
| Royalty | % | 3.0 | 3.0 |
| Kazakhstan Royalty | % | 0.5 | 0.5 |
| Pit Slopes | |||
| scenario x.x.1 | degrees | 45 | 45 |
| scenario x.x.2 | |||
| oxide and transitional | degrees | 45 | 45 |
| sulphide | degrees | 60 | 60 |
The processing rate for the oxide mineralization in all scenarios is 1.2 mllion tonnes per annum and the processing rate for the sulphide gold mineralization is 3.6 million tonnes per annum.
Optimizations using Inferred mineral resource blocks proved extremely useful in highlighting the potential at Uzboy. Mineral resources that are not mineral reserves do not have demonstrated economic viability. The Preliminary Assessment includes mineral resources that are considered too speculative geologically to have economic considerations applied to them that would enable them to be categorized as mineral reserves, and there is no certainty that the Preliminary Assessment will be realized.
Resource EstimateThe resource estimate for the Uzboy gold deposit completed by ACA Howe has an effective date of December 31, 2007 (see News Release dated April 8, 2008). The resource estimate was completed for oxide, transitional and sulphide gold mineralization at various cut-off grades ranging from 0.0 g/t to 5.0 g/t gold. The Study incorporates the diamond drilling, trenching and pit channel sampling results to December 31, 2007. The Measured, Indicated and Inferred mineral resource categories for the Uzboy gold deposit are set out in TABLES 3 and 4 (at various cutoff grades).
TABLE 3 - Summary of Measured and Indicated Mineral Resource Estimates for the West and East zones of the Uzboy Gold Deposit at Various Cut-off Grades| Measured Resource | Indicated Resource | Measured + Indicated Resource | ||||||||
| Style of Mineralization |
Cut-off grade (g/t) |
Tonnes | Gold grade (g/t) |
Ounces | Tonnes | Gold grade (g/t) |
Ounces | Tonnes | Gold grade (g/t) |
Ounces |
| Oxide | 0.20 | 3,733,300 | 0.86 | 103,500 | 1,784,300 | 0.71 | 40,600 | 5,517,600 | 0.81 | 144,100 |
| 0.40 | 2,310,400 | 1.21 | 90,100 | 997,600 | 1.04 | 33,300 | 3,308,000 | 1.16 | 123,400 | |
| 0.60 | 1,587,600 | 1.54 | 78,700 | 604,200 | 1.40 | 27,100 | 2,191,800 | 1.50 | 105,800 | |
| Transitional | 0.20 | 1,102,200 | 1.15 | 40,700 | 1,415,200 | 0.98 | 44,600 | 2,517,400 | 1.05 | 85,300 |
| 0.40 | 799,900 | 1.47 | 37,800 | 903,100 | 1.36 | 39,600 | 1,703,000 | 1.41 | 77,400 | |
| 0.60 | 599,700 | 1.80 | 34,700 | 638,400 | 1.72 | 35,400 | 1,238,100 | 1.76 | 70,100 | |
| Sulphide | 0.20 | 15,626,900 | 1.22 | 614,200 | 7,270,000 | 0.96 | 223,600 | 22,896,900 | 1.14 | 837,800 |
| 0.40 | 11,206,900 | 1.59 | 572,100 | 5,108,800 | 1.23 | 202,600 | 16,315,700 | 1.48 | 774,700 | |
| 0.60 | 8,186,400 | 2.00 | 526,100 | 3,599,400 | 1.55 | 179,600 | 11,785,800 | 1.86 | 705,700 | |
The 0.40 g/t cut-off grade is used as the base case for the resource estimate. TABLE 3 demonstrates the sensitivity of the tonnes, average grade and contained ounces of gold in the Measured and Indicated mineral resource categories to the other cut-off grades shown.
TABLE 4 – Summary of Inferred Mineral Resource Estimate for the West and East zones of the Uzboy Gold Deposit at Various Cut-off Grades| Inferred Resource | ||||
| Style of Mineralization |
Cut-off grade (g/t) |
Tonnes | Gold grade (g/t) |
Ounces |
| Oxide | 0.20 | 3,141,600 | 0.57 | 57,200 |
| 0.40 | 1,521,700 | 0.86 | 42,100 | |
| 0.60 | 775,200 | 1.22 | 30,400 | |
| Transitional | 0.20 | 3,566,100 | 0.82 | 93,500 |
| 0.40 | 2,199,300 | 1.14 | 80,500 | |
| 0.60 | 1,497,900 | 1.45 | 69,800 | |
| Sulphide | 0.20 | 12,007,100 | 0.88 | 340,500 |
| 0.40 | 7,537,200 | 1.23 | 299,100 | |
| 0.60 | 5,509,000 | 1.50 | 266,500 | |
The 0.40 g/t cut-off grade is used as the base case for the Inferred mineral resource category estimate.
TABLE 4 demonstrates the sensitivity of the tonnes, average grade and contained ounces of gold within the Inferred mineral resource category for the other cut-off grades shown.
Notes:The updated resource estimate was prepared by Mr. J. N. Hogg, MSc., MAIG, senior geologist from ACA Howe, who is an independent qualified person within the meaning of NI 43-101. Mr. Hogg has reviewed and verified the technical information that forms the basis of and has been used in the preparation of the current mineral resource estimate and this news release. Mr. Hogg reviewed all analytical data, diamond drill hole logs, QA/QC data, density measurements, and sampling, diamond drilling and analytical techniques. The analytical results and other technical information included in the current resource estimate have been previously announced by way of news releases and are available on Sedar.
Basis for the Reserve Estimate:As part of the Study, Micromine Consulting was commissioned in August 2008 by ACA Howe to complete a Pit Optimization and Analysis study on the gold resources contained in the oxide, transitional and primary (sulphide) portions of the East and West zones of the Uzboy gold deposit using the December 31, 2007 resource estimate. Micromine Consulting subsequently undertook selected pit design and mineable reserve estimation as part of the Study during the period September to October, 2008.
On completion of the pit optimization study, Scenario 1.2.1 was selected and the actual pit designs for the West and East zones of the Uzboy gold deposit was completed by Howe. This pit design yielded the following results:
| CIM Class | Type | SG | Volume (`000 m3) |
Mineable (`000 t) |
Grade Au, (g/t) |
Metal Au, (kg) |
Metal Au, (oz) |
| East Uzboy Total Reserves | OX | 2.54 | 500 | 1,300 | 0.93 | 1,200 | 39,500 |
| TR | 2.67 | 100 | 300 | 1.21 | 400 | 11,500 | |
| PR | 2.73 | 400 | 1,000 | 1.27 | 1,200 | 40,000 | |
| West Uzboy Total Reserves | OX | 2.54 | 600 | 1,500 | 1.55 | 2,300 | 74,500 |
| TR | 2.61 | 400 | 1,200 | 1.62 | 1,900 | 60,000 | |
| PR | 2.72 | 1,600 | 4,300 | 2.27 | 9,700 | 312,500 | |
| EAST and West Total Reserves | OX | 2.54 | 1,100 | 2,800 | 1.26 | 3,600 | 114,500 |
| TR | 2.62 | 600 | 1,400 | 1.54 | 2,200 | 71,500 | |
| PR | 2.72 | 1,900 | 5,300 | 2.08 | 11,000 | 352,500 | |
| Total | Ore | 2.65 | 3,600 | 9,500 | 1.76 | 16,800 | 538,500 |
* Scoping study mineable classification is based upon CIM/JORC compliant mineral resource classification categories. Measured resource blocks which are situated within the pit design are classified as Proven reserves, and Indicated blocks which are situated within the pit design are classified Probable. Inferred blocks are classified along with waste.
The Micromine Open Pit Optimiser is based on the Lerchs Grossman algorithim and 3D graph theory and relies on the input of; an orebody block model file, plus cut-off grades, metal prices and the parameters set out in TABLE 2 to determine the proportion of ore to waste in each block and the value of each block.
Optimization and reserve reporting methodology used the Measured and Indicated mineral resource categories for the oxide, transitional and primary (sulphide) portions of the West and East zones of the Uzboy gold deposit. Howe used the parameters set out in TABLE 2 to estimate mineable tonnes of oxide, transitional and primary gold mineralization for the east and West zones of the Uzboy gold deposit.
Total mineable proven and probable oxide, transitional and primary reserves at West and East Uzboy, for the above operating scenario 1.2.1 optimal Pit #35 as of December 31, 2007 are 9.5 Mt @ 1.76 g/t Au for 538,500 oz Au. Total recoverable gold after mining and process losses for this scenario equals approximately 420,700 oz Au. All inferred mineral resources included within this optimized pit shell are classified as waste under this scenario.
Optimization scenarios using the same input parameters but including Inferred resources, returned significantly higher NPV. This indicates the importance of future exploration to upgrade Inferred mineral resources to the Measured and Indicated categories.
Cautionary Note Concerning Reserve and Resource EstimatesThis news release by Alhambra uses the terms “resources”, “measured resources”, “indicated resources” and “inferred resources”. United States investors are advised that, such terms are recognized and required by Canadian securities laws, the United States Securities and Exchange Commission (the “SEC”) does not recognize them. Under United States standards, mineralization may not be classified as a “reserve” unless the determination has been made that the mineralization could be economically and legally produced or extracted at the time a reserve determination is made. Mineral resources that are not mineral reserves do not have demonstrated economic viability.
United States investors are cautioned not to assume that all or any part of measured or indicated resources will ever be converted into reserves. Inferred resources are in addition to measured and indicated resources. Inferred resources have a great amount of uncertainty as to their existence and as to whether they can be mined economically. It cannot be assumed that all or any part of an inferred resource will ever be upgraded to a higher category. United States investors are cautioned not to assume that all or any part of an inferred resource exists, or that it can be mined economically.
NI 43-101 is a rule developed by the Canadian Securities Administrators, which established standards for all public disclosure an issuer makes of scientific and technical information concerning mineral projects. The requirements of NI 43-101 are not the same as those of the SEC.
About AlhambraAlhambra is a Canadian based international production and exploration company celebrating its eighth year of operations in the Republic of Kazakhstan. It is engaged in the exploration and development of gold properties and commenced gold production in late 2004.
Elmer B. Stewart, MSc. P. Geol., is the Corporation's nominated Qualified Person responsible for monitoring the supervision and quality control of the programs completed within the Uzboy Project. Mr. Stewart has reviewed and verified the technical information contained in this news release.
Alhambra common shares trade in Canada on The TSX Venture Exchange Inc. under the symbol ALH and in Germany on the Frankfurt Open Market under the symbol A4Y. The Corporation's website can be accessed at www.alhambraresources.com
| John J. Komarnicki Chairman & CEO +1 (403) 228-2855 |
Ihor P. Wasylkiw VP and Chief Information Officer +1 (403) 508-4953 |
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Forward-Looking Statements |
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Alhambra Resources Ltd.
Head Office 330, 700 - 6th Avenue S.W. Calgary, Alberta, Canada T2P 0T8 Phone: (403) 228-2855 Fax: (403) 228-2865 E-mail: info@alhambraresources.com |
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