AXXX BRASIL MINERAÇÃO S.A.
PRESENTATION FOR INVESTORS
MORRINHO MINERAÇÃO LTDA
SALINAS GOLD MINE
MATO GROSSO - BRAZIL
MINERAO S.A. MORRINHO MINERAO LTDA SALINAS GOLD MINE MATO GROSSO - - PowerPoint PPT Presentation
AXXX BRASIL MINERAO S.A. MORRINHO MINERAO LTDA SALINAS GOLD MINE MATO GROSSO - BRAZIL PRESENTATION FOR INVESTORS SALINAS GOLD MINE 108 km SALINAS GOLD MINE Mato Grosso Population: 2,803,274 (2005) Area: 903,386 km 2
MATO GROSSO - BRAZIL
108 km
Mato Grosso
– Population: 2,803,274 (2005) – Area: 903,386 km2 – GDP: US$ 15 billion (2006) – State with the highest economic growth in the last 18 years (GDP>315%) – Cuiabá: modern infrastructure:
– Home of important mining companies, such as:
Cuiabá, Mato Grosso, Brazil
MAG Geophysical Survey
Regional geological unit: Cuiabá Group: marine to epicontinental environment . Main lithologies: conglomerate, quartzite, slate and carbonatic rocks with subordinated iron-rich meta-sediments. Deformation and metamorphic dewatering responsible for formation of quartz veining systems along the main NE structural trends of the Cuiabá Group. Regional NE oriented thrust faults are the most conspicuous structures and define extensive shear zones where hydrothermal alteration and quartz veining host the main gold mineralizations.
Detritic metasediments of the Cuiabá Group. Rocks are: metasandstones, metargilites, metasiltstones, metaconglomerates, metadiamictites, carbonaceous and carbonatic meta sediments with intercalations of felsic tufaceous volcanics. Four new thrust faults with shear zones along NE direction were recognized in the area with the development of intensive hydrothermal alteration associated with quartz veining.
SALINAS GOLD MINE
A A’
Mineralization
hydrothermal fluids generated by the low-grade metamorphic event along NE direction thrust faults cutting late proterozoic sedimentary rocks .
3) Disseminated gold along hydrothermal alteration zone.
Conformable: Flat to upright, N-NE striking and up to 300 m long and 0.10 to 1.0 m wide. Gold grades lower than 2.0 g Au/t. Unconformable: Usually upright, N-W striking, less than 100 m long and
carbonatization, silicification and sulphidation - py ) associated with concordant and discordant quartz veins define an important mineralized system with grades around 1.0g Au/t.
Diamond Drilling Program – 7,000 meters
Main objectives :
►Confirm down dip continuity of the gold mineralization (alteration zone
with quartz veins and pyrite and carbonate dissemination) detected by trenching along and among the four main known trends (West, Central, Intermediary and East shear zones). Five new targets were selected : Cumbaru, Bocaiuva, Angico/Sucupira, Imbauba and Urtiga.
►Test the continuity of the mineralization down dip below the old pits
(Confusão, Rica, Max, Melechete, Represa and Jeca), previously excavated by garimpeiros
►Test reinterpreted geophysical anomalies ( IP / Mag )
Cumbaru Target - Drill rig on site
Carbonaceous rhythmic phyllites with conformable quartz vein (costelão)
Altered Sericitic phyllite with pyritic and carbonatic dissemination
Drill core logging
Section AB - SD-05/SD-14 Drill Holes
Geology
(western, central and intermediary ) generated seven selected targets (Cumbaru, Bocaiuva, Imbauva, Angico-Sucupira, Confusão, Represa and Urtiga). Excellent potential for bulk mineable resources.
presented consistent mineralized systems: 500m and 300m respectively by 30-40 m wide have shown pervasive hydrothermal alteration and increased amount of quartz veins.
continues down deep. Projection of the systems on surface defines mineralized zones with at least 100m wide.
Highlights
– Cumbaru Pits 1 & 2 deepened up to 25 meters. Gold headgrade higher than 2 g/t was found locally – Host rock (sericitic phyllites) presented an average grade of 0.3 g/t ; – Quartz veins presented a grade higher than 2.0 g Au /t; Conclusions: – Urgent need for mineral resources determination; – Bulk sampling recommended by SRK. Large samples needed. Large diameter drilling envisaged.
Highlights
Panoramic view of the Cumbaru Target looking SW, showing the orthogonal and diagonal trenching. Estimated distance - 600 m.
Transversal section to the main NE trend showing high concentration of disrupted conformable quart veins (costelões) and transversal NW ( filões) hosted by hydrothermally altered sericitic and carbonaceous phyllites and metasandstones.
Longitudinal section along NE trend showing high concentration of disrupted conformable quartz veins (costelões) and unconformable quartz veins (filões) hosted by hidrothermally altered sericitic and carbonatic phyllites.
Detailed view along the NE trend showing high concentration of disrupted uncomformable quartz veins (filões) hosted by hydrothermally altered sericitic and carbonatic phyllites.
SUCUPIRA TARGET (looking NE )
Coarse Gold in pyrite boxwork - Quartz Vein - Cumbaru Target
►15,000 meters of trenching (100 to 200 m apart) opened in the area, so as to test three main West, Central and Eastern shear zones. Gold grade by trenching lower than plant gold grade. ►Systematic trenching defined five new target areas: Cumbaru and Urtiga (Central Trend), Bocaiuva (Intermediary Trend) , Imbauva and Sucupira / Angico ( Western Trend ). ► Testing of the primary material : four diagonal trenches at 25 m apart at central part of the Cumbaru Target. Tonnage: 3, 174 dry tons. ► Head grade obtained by back-calculation. Grade higher than two times the gold grade
► Diamond drilling (12,000 meters) used to test the down dip and along strike mineralized
Proving Mineral Resources
► Bulk sampling recommended by SRK defined as the best approach for the Salinas Mineral Resources Evaluation.
Loading trench bulk material Plant tailing sampling
Trench Resources evaluation - 4 trenches at 25 meters apart
Resource / Reserve Evaluation Strategy
depth, 100m wide, grade 1.0 g/t, dipping 30°, s.g 2.08 t/m3.
concentrates and tailings assaying results;
Mineral Resources Evaluation Strategy Original SRK Exploration Program
Gravity Process Plants: Gravity plant with 1,200 TPD current capacity: Basic closed circuit: Feed boxes, hammer milling, hydrocyclons, ball milling, primary & secondary centrifugal concentrators. Poor maintenance conditions. Complete refurbishment is needed. Final product is gravity concentrates. Future Fines Gold Plant: Cyanidation Gold Plant construction (2,500 TPD) seeking financing. Project and construction time : 6 months. Cost : US$ 8 million (including mine equipment). Future Fines Gold Plant metallurgical route: Gravity circuit plus Flotation & Agitated leaching (CIP-Carbon in Pulp). Cyanidation Plant will also process old Gravity Plant Tailings . Gold electrolytical recovery . Expected overall recovery: 90-92%
Environmental Control Plan & Report - Environmental License ECP and Environmental Application submitted to SEMA (State of Mato Grosso Environmental Authority) on July 21, 2008; Full Cyanidation Environmental license obtained from SEMA on December 2008. Environmental License has been successfully renewed every three years.
GRAVITY PLANT – Ball Mills, Cyclones and Spirals
Gravity Plant – General View
Flotation Plant – General View
Flotation Plant – General View
Cyanidation Plant – General View
Metallurgical batch testing carried out at CETEM, Mineral Technology Center based in Rio de Janeiro. Gravity process followed by conventional gold fines flotation methods have shown up to 79% overall gold recovery; In house batch cyanidation testing carried out for the gravity concentrates and gravity plant tailings with 90-92% recovery. Agitated cyanidation (CIP) being considered as a valuable technical alternative for Salinas ores. Pilot scale plant testing carried out at Salinas has confirmed batch results.
Flotation & Cyanide Leaching Plant Investment
CAPEX COST – CYANIDATION PLANT (2,500 TPD)
Cyanidation (CIP) Plant Project & Construction : US$ 2.5 million Improvements at current Gravity Plant (Crushers) : US$ 1.5 million Mine equipment : US$ 1.0 million TOTAL : US$ 5.0 million
► Payment to land owner * : US$ 2,000,000 ► New Cyanidation Plant & Mine : US$ 5,000,000- ► Working Capital : US$ 1,000,000 ► Payment to current owner* : US$ 5,000,000 Capital required from new investors
be parceled
► Payment to previous owner * : US$ 2,000,000
To improve production from 10,000 ounces/year to 30,000 ounces /year in six months, after the new cyanidation plant (flotation & CIP) is built; To improve production to 50,000 ounces per year in 2-3 years by increasing tonnage from the same or new targets. To improve production to 75,000 ounces per year in 4-5 years through acquisition & development of new projects and properties in the vicinities and development of the “mobile plants” concept for old gravity tailings along the Cuiabá Gold Belt (200 million tons of tailings at approx. 0.5 g/t. )
SALINAS GOLD MINE - MANAGEMENT
Project director – R. A. Abergel
Amazon region by applying innovative methods and self correcting procedures into locating gold ores, optimizing project cost and maximizing production. Mr. Abergel has vast experience in the areas of geological research, plant deployments, logistics, security, administrative process of operating a gold mine in remote areas and project management .
Mining Engineer. Forty years of experience in mine/plant operations, exploration, project development and mine construction. Worked in senior positions for CODELCO, Rosario Resources, CAEMI Group, Caraiba Metais, BP Minerals, Yamana, Votorantim, VALE and as General Manager (Brazil) for Canico Resources (Onça Puma Nickel Project). Fluent in English, Spanish and Portuguese.
(CVRD), BP Minerals and as a Consultant for NORANDA, CVRD, Votorantim, Ambrex Mining Corp., MINCOR and PASMINCO. Fluent in English, Spanish and Portuguese. Process Manager, Claudio Chaves Metallurgist – Twenty-two years of experience in metallurgical processing, plant
cyanidation plants (CIP & CIL and Heap Leaching) in gold and copper plants for companies as Anglo American Corp., Yamana Gold, Kinross, Santa Elina Gold and Caraiba.