CSI - Colossus Minerals - WKN A0MVYG

April 10, 2012 06:01 ET
Colossus Minerals Announces Significant Achievement in Metallurgical Recoveries of Platinum Group Metals From Serra Pelada

TORONTO, ONTARIO--(Marketwire - April 10, 2012) - Colossus Minerals Inc. (the "Company" or "Colossus") (TSX:CSI)(OTCQX:COLUF) is pleased to provide an update on the metallurgical test-work conducted on samples from Colossus' 75% owned Serra Pelada Gold-Platinum-Palladium Project. The Serra Pelada Project is a Colossus-COOMIGASP Joint Venture located in Para, Brazil.

All test work was conducted on samples from drill hole SPD-113 (74.40 metres at 31.17 g/t gold, 3.02 g/t platinum and 6.78 g/t palladium - please refer to news release of September 7, 2011), an interval with relatively low platinum group metals ("PGM") grades compared with other assay results previously disclosed.

Highlights

Previously disclosed gravity test-work achieved recovery rates for gold between 77% and 88%, with recoveries from SPD-113 ranging between 77% and 80% (please refer to news release of December 5, 2011), with indicated platinum and palladium recoveries as presented in detail below.
Flotation testing of the composite gravity tails sample achieved recovery rates of 77%, 78%, and 69% for the remaining gold, platinum and palladium respectively.
The significant metallurgical flotation achievement for PGM's uses a readily available, conventional and low cost combination of reagents.
The flotation concentrate was produced after only six minutes of flotation and is free of deleterious elements.
Based on all metallurgical results achieved to date, Colossus expects that a combined gravity and flotation process in a plant should recover between 92%-96% gold, 74%-78% platinum and 67%-71% palladium.
Claudio Mancuso, President & Chief Executive Officer commented, "The metallurgical recoveries for PGM's have exceeded our expectations, especially given that drill hole SPD-113 exhibits lower PGM grades than other drill holes at Serra Pelada. More importantly, the PGM's were recovered using a simple flotation process and conventional flotation reagents, which resulted in a much quicker than expected flotation time." Mr. Mancuso further commented, "I would like to thank Andy Holloway, his team at AGP Mining Consultants Inc. and the team at Blue Coast Research Ltd. for their tireless efforts on the PGM process work. Their commitment to the project has led to these particularly encouraging results."

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http://www.marketwire.com/press-rel...gical-recoveries-platinum-tsx-csi-1641655.htm
 
April 25, 2012 06:01 ET

Colossus Minerals Drills 109.89 g/t Gold, 0.75 g/t Platinum and 15.51 g/t Palladium in the GT Zone and Continues to Expand Upper Limb Mineralization

http://www.marketwire.com/press-rel...551-g-t-palladium-gt-zone-tsx-csi-1648380.htm
TORONTO, ONTARIO--(Marketwire - April 25, 2012) - Colossus Minerals Inc. (the "Company" or "Colossus") (TSX:CSI)(OTCQX:COLUF) is pleased to announce assay results from the 15,000 metre surface drilling program at its 75% owned Serra Pelada Gold-Platinum-Palladium Project. The Serra Pelada Project is a Colossus-COOMIGASP joint venture located in the State of Pará, Brazil.
 
Colossus Minerals Provides Update and Reminder of Annual General Meeting
May 15, 2012

TORONTO, ONTARIO--(Marketwire - May 15, 2012) - Colossus Minerals Inc. (the "Company" or "Colossus") (TSX:CSI)(OTCQX:COLUF) is reminding shareholders and other interested parties of the annual general meeting to be held at The Fairmont Royal York, 100 Front Street West, 19th Floor, Salon 4, Toronto, Ontario tomorrow Wednesday, May 16, 2012 at 10:00 am (Toronto time). In addition to the regular business of the Company, management intends to bring investors up to date on the status of development at Colossus' 75% owned Serra Pelada Gold-Platinum-Palladium Project. The Serra Pelada Project is a joint venture between Colossus and Cooperativa de Mineração dos Garimpeiros de Serra Pelada ("COOMIGASP") located in the State of Pará, Brazil. In the opinion of management, as at March 31, 2012, the Company currently has adequate funds to pursue all of its planned exploration activities and its development program objectives for 2012. For those individuals who are unable to attend in person the following sets forth the highlights of the status update.

Status Update - Mine, Processing Plant, Joint Venture Partners and Exploration

Mine

Over 1,000 metres of decline development completed; total advance of approximately over 1,250 metres including secondary development
Approximately 300 metres of total development left to access mineralization for bulk sample
Ground conditions and water inflow encountered have been entirely manageable.
5 of the wells in the 15 well dewatering system have been working for six weeks now and dewatering is progressing smoothly. Remaining wells are being commissioned with expected completion for end of May.

Processing Plant

Employing a relatively simple gravity circuit for gold recovery and a flotation circuit employing a readily available, conventional and low cost combination of reagents based on all metallurgical results achieved to date, Colossus expects that a combined gravity and flotation process in a plant should recover between 92%-96% gold, 74%-78% platinum and 67%-71% palladium.
Long lead-time items for the processing plant have been ordered and are expected on site during the third quarter of 2012.

Joint Venture Partner - COOMIGASP

On April 21, 2012 Paulo de Tarso Serpa Fagundes, Chief Operating Officer, hosted a delegation of 22 artisanal gold miners drawn from COOMIGASP to ensure the project's joint venture partner remains current with the progress of development. The visit included a presentation covering the achievement of a number of milestones as Serra Pelada progresses to production in mid-2013, an outline of the timelines to various important milestones like the extraction of the bulk sample early in the second half of 2012 and publication of the initial reserve and resource estimate in the first quarter of 2013, together with an update on community social programs being undertaken. The COOMIGASP members were also given a tour of the site and an underground tour to inspect the progress of construction and development to date.

Exploration

At the meeting, management will also provide an update on exploration as detailed in a number of recent news releases including the one issued on April 25, 2012 which included SPD-142, the high-grade intercept in the GT Zone.
 
neue Unternehmenspräsentation 05/2012:
http://www.slideshare.net/ColossusMinerals/csi-corporate-presentation-may-2012




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June 18, 2012 06:01 ET

Colossus Drills 3.30 Metres at 54.48 g/t Gold, 0.69 g/t Platinum and 5.42 g/t Palladium in the GT Zone and Successfully Closes the Gap Between the GT and Central Mineralized Zones

TORONTO, ONTARIO--(Marketwire - June 18, 2012) - Colossus Minerals Inc. (the "Company" or "Colossus") (TSX:CSI)(OTCQX:COLUF) is pleased to announce assay results from the 15,000 metre surface drilling program at its 75% owned Serra Pelada Gold-Platinum-Palladium Project. The Serra Pelada Project is a Colossus-COOMIGASP joint venture located in the State of Pará, Brazil.

HIGHLIGHTS

•For the first time, drilling has closed the gap between the GT Zone and Central Mineralized Zone ("CMZ") on sections 50NE and 100NE validating the exploration team's effort in demonstrating continuity between the CMZ and GT Zone.
•The gap on sections 75NE and 175NE continues to narrow with drill holes SPD-161 and SPD-154 having extended the GT Zone approximately 30 and 45 metres respectively closer to the CMZ in these sections. Further drilling will attempt to eliminate the remaining gaps on these sections.
•SPD-159 intersected 5.30 metres at 23.49 g/t gold, 0.06 g/t platinum and 0.22 g/t palladium extending mineralization along the upper limb of the fold, up-dip from the CMZ by approximately 27 metres.
•SPD-165 intersected the GT Zone and returned 54.48g/t gold, 0.69 g/t platinum and 5.42 g/t palladium over 3.30 metres. SPD-165 was a 25 metre step-out from hole SPD-142 that returned 9.8 metres at 109.89 g/t gold, 0.75 g/t platinum and 15.51 g/t palladium including 0.80 metres at 1,336.13 g/t gold, 8.46 g/t platinum and 188.14 g/t palladium (see April 25, 2012 press release) and continues to prove the high-grade potential of the GT Zone.
Claudio Mancuso, President & CEO of Colossus commented, "Our drill campaign continues to expand the GT Zone and add mineralization along the untapped portions of the upper limb. We have now closed the gap between the GT Zone and the CMZ on two sections and will continue to try to demonstrate the lower limb and CMZ are one deposit along the 600 metres of strike length proven to date at Serra Pelada. The upper limb is becoming significant as we continue to intersect high-grade mineralization there. We are optimistic of the potential for this area to become a meaningful part of the overall mineralization at Serra Pelada."

DETAILS

This release documents results (Table 1, below) from drilling of the GT Zone and that portion of the lower limb between the GT Zone and the CMZ, the significance of which are also discussed. Figure 1 shows the positions of the new drill holes and plan views of the mineralized zones being explored on the Serra Pelada property. Figures 2 and 3 are cross-sections highlighting some of the holes discussed in this release but do not include all the results for the past drill holes found in the sections.

TABLE 1: SIGNIFICANT DRILLING RESULTS

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http://www.marketwire.com/press-release/colossus-drills-330-metres-5448-g-t-gold-069-g-t-platinum-542-g-t-palladium-gt-zone-tsx-csi-1670246.htm
 
Colossus Minerals Announces Semi-Annual Note Interest Payment

TORONTO, ONTARIO -- (Marketwire) -- 06/19/12 -- Colossus Minerals Inc. (TSX:CSI)(OTCQX:COLUF) announces that it will be paying the semi-annual interest payment of $44.88 per $1,000 Note. The payment will be made to noteholders of record at the close of business on June 29, 2012 and will be payable on July 3, 2012.
 
Colossus Minerals Appoints Lyle Pritchard as Vice President, Operations and Provides Metallurgical and Development Update
July 16, 2012

TORONTO, ONTARIO--(Marketwire - July 16, 2012) - Colossus Minerals Inc. (the "Company" or "Colossus") (TSX:CSI)(OTCQX:COLUF) is pleased to announce that Lyle Pritchard General Manager of Serra Pelada has been appointed as Vice President, Operations. Since joining Colossus he has lived up to his reputation as a highly-motivated and safety-minded mine operations manager with practical and progressive experience in all aspects of management and underground mining methods, as well as an experienced operator in challenging underground mining conditions. He has proven a strong leader of the operating team. Mr. Pritchard brings a wealth of experience from his years at Barrick's Bulyanhulu Mine in Tanzania and more recently at Goldcorp's Marlin Mine in Guatemala and AuRico's El Cubo Mine in Mexico. As part of this management realignment, Paulo de Tarso Serpa Fagundes, Chief Operating Officer, has left to pursue other interests and the Company wishes to thank him for his hard work and dedication in developing the Serra Pelada Project.

In addition to the promotion of Mr. Pritchard, the Company is also pleased to provide a status of development at its 75% owned Serra Pelada Gold-Platinum-Palladium Project. The Serra Pelada Project is a joint venture between Colossus and Cooperativa de Mineração dos Garimpeiros de Serra Pelada ("COOMIGASP") located in the State of Pará, Brazil.

Highlights

Additional metallurgical tests on higher grade Central Mineralized Zone ("CMZ") composites have achieved overall (gravity + flotation) recovery rates of approximately 97% gold, 80% platinum and 83% palladium.

Latest metallurgical tests confirm a saleable concentrate can be produced with a final PGM grade (Pt, Pd, Au), before calcining, of 66.7 grams per tonne.

A new and deeper part of the CMZ has been chosen for the bulk sample thus providing a larger horizontal and vertical panel from which to extract a more representative sample.

Dewatering progressing well with ground water being drawn down more than 150 metres in localized areas.

Claudio Mancuso, President and Chief Executive Officer commented, "The latest metallurgical results are very encouraging as they re-affirm the robust metal recoveries and the ability to produce a saleable concentrate. Development activities are quickly gathering steam and, since his arrival in April, Mr. Pritchard has proven that he is eminently capable of bringing Serra Pelada into production in a safe, timely and cost-effective manner. Mr. Pritchard richly deserves this promotion and has the full support and confidence of the senior management and the board of directors as he advances the mine to production. We would also like to thank Paulo de Tarso Serpa Fagundes for his service to the Company and wish him well in his future endeavours."

Development Update

Processing Plant

The metallurgical update announced on April 10, 2012 disclosed results of gravity and flotation work conducted on samples from drill hole SPD-113 (74.40 metres at 31.17 g/t gold, 3.02 g/t platinum and 6.78 g/t palladium - please refer to news release of September 7, 2011), an interval with relatively low platinum group metals ("PGM") grades compared with other assay results previously disclosed.

More recently, further flotation testing has focused on a series of new metallurgical composites, compiled from samples of higher grade sections of mineralization from drill hole SPD-120 (74.35 metres at 15.45 g/t gold, 4.54 g/t platinum and 7.04 g/t palladium). This work has been designed to test the response of variability samples to the baseline flotation process and results from the first test on a higher grade Master Composite have verified the anticipated improvement in metallurgical performance.

The Master Composite, consisting of material from 47 samples from SP-120, had higher grade assays than previous metallurgical samples, as given in table 1 below:

Table 1 - Comparison of Composite Head Grades
Composite Grade, g/t
Pt Pd Au
New 2012 Master Comp 5.3 8.5 25.4
2011 C2 Comp 4.3 5.6 17.3
2011 C3 Comp 1.1 1.7 11.7

As with previous testing, the new 2012 composite was subjected to gravity recovery prior to flotation testing. Gravity test results determined a gravity recovery of 76.2% gold which is in line with expectations and previously reported results. As with all previous testwork, gravity recovery of PGM's was low with 4.8% Pt and 9.5% Pd recovery to the gravity concentrate.

A sub-sample of gravity tails from the above work was subsequently tested using the Serra Pelada baseline flotation flowsheet. The metallurgical balance for this flotation test is given in table 2 below:

Table 2 - Test F-39, Metallurgical Balance
Product Grade, g/t Recovery, %
Mass

% Pt Pd Au 3E Pt Pd Au 3E
Flotation Feed (Gravity Tails) 100 5.5 8.5 6.5 22.4 100.0 100.0 100.0 100.0
Flotation Concentrate 25.5 17.1 26.8 22.7 66.7 79.5 81.1 88.8 83.1
Flotation Tailing 74.5 1.5 2.2 1.0 4.7 20.5 18.9 11.2 16.9

These results represent a significant improvement in PGM grade and recovery over previous work on lower grade samples. In particular, the flotation concentrate grade of 66.7 g/t (Pt+Pd+Au) also carries 18% carbon, which Colossus anticipates could be calcined on-site to further improve PGM grade and reduce transportation costs.

The flotation test described above was subsequently repeated on a second, larger sample of the Master Composite in order to prepare sufficient flotation concentrate for calcination and arc furnace testing. Results of this second test were very similar - providing further confidence in the result.

Normalizing the flotation recoveries to account for metal recovered by gravity, the distribution of metal recovery can be summarized as follows:

Table 3 - Test F-39, Metallurgical Balance
Product Recovery, %
Au Pt Pd
Gravity 76.2 4.8 9.5
Flotation 21.1 75.7 73.4
Total Process 97.3 80.5 82.9

These latest results add considerable weight to the assumption that overall recoveries of 92-96% gold, 74-78% platinum and 67-71% palladium will be met or exceeded using a gravity plus flotation process.

Processing plant construction is progressing on schedule. While 90% of the site earthworks had been previously completed, additional terracing and slope stability work is almost complete and process plant civil construction is expected to begin imminently. Critical equipment has begun to arrive on site with the primary and secondary crushers now delivered. Manufacture of gravity concentrators, intensive leach reactors and electrowinning cells is complete and this equipment is currently being prepared for transportation to site.

Andy Holloway, P.Eng, Principal Process Engineer at AGP Mining Consultants, is a qualified person under National Instrument 43-101 and is responsible for the Company's metallurgical program and results and has verified the related content disclosed herein.

Underground Development

Primary decline development is progressing well with steady improvements in daily development rates since the arrival of Mr. Pritchard. As a result, the Company has decided to target new deeper areas for the bulk sample. With the arrival of Mr. Pritchard in April, the Company has introduced new procedures for periodic re-evaluation of mine design. During the most recent examination and revision process at the beginning of July, the Company decided to progress approximately 150 metres past the previously announced location for the bulk sample to open multiple working faces from which to take a more representative bulk sample. This method simplifies the step of moving from bulk sample to production and saves vertical development footage and costs. The Company has decided to delay the extraction of the bulk sample by 30-45 days to allow for additional development required for the new bulk sampling strategy. The Company is approximately 300 metres from the new bulk sample locations and thus is still on target to extract the bulk sample in the latter half of 2012.

As development progresses toward the CMZ, the Company continues to encounter better than expected ground conditions and water inflow continues to be manageable.

During July, the Company also took delivery of a new Sandvik DS-311 rockbolter and three new Sandvik LHD-307 scoops. The arrival of this new equipment will help improve cycle times and reduce maintenance downtime. This additional equipment availability was also considered when deciding to change the bulk sample locations. Secondary development is progressing well with the excavation of a permanent underground pumping station complete. Installation of pumps is expected to begin shortly.

Dewatering

Dewatering is on schedule with eight of ten available wells now in full operation. Of the remaining two wells, one is currently off line for scheduled maintenance and one is currently not in use due to the water level in the well being below the level of the pump; almost 150 metres below surface. The eight wells are now pumping approximately 550 cubic metres of water per hour which is sufficient to provide adequate dewatering for bulk sample extraction. During the next six months, the Company will complete the commissioning of an additional five wells which will provide further dewatering capability for the production phase. Permanent infrastructure construction related to the dewatering system was also recently completed with the installation of an independent electrical generation system to power the dewatering pumps.

During the quarter, the Company continued to gather information regarding the connectivity of the water in the historic pit and the ground water. While the Company is confident that there is no connectivity between the two water systems, management has decided to draw down the water level in the historic pit by approximately twenty metres in order to mitigate this residual risk. The Company intends to leave approximately three to five metres of water in the historic pit. All environmental permits for reducing the water level have been obtained and pumping has begun.
 
neue Unternehmenspräsentation vom 17.07.2012:
http://www.colossusminerals.com/Theme/Colossus/files/doc_presentations/CSI%20Corporate%20Update%202012%20July%2016.pdf



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Colossus Minerals Reports Results from Diamond Drilling Programs at Serra Pelada

TORONTO, ONTARIO--(Marketwire - Feb. 28, 2013

Colossus Minerals Inc. (the "Company" or "Colossus") (TSX:CSI)(OTCQX:COLUF) announces assay results from surface and underground drilling programs on its 75% owned Serra Pelada gold-platinum-palladium Mine. The Serra Pelada Mine is a joint venture between Colossus and Cooperativa de Mineração dos Garimpeiros de Serra Pelada ("COOMIGASP") located in the State of Pará, Brazil.

HIGHLIGHTS
SPD-182 intersected 3.40 metres grading 13.28 g/t gold, 0.02 g/t platinum and 0.06 g/tpalladium increasing the width of the CMZ in this location

SPD-184 intersected 26.65 metres grading 5.10 g/t gold, 11.22 g/t platinum and 9.42 g/t palladium also increasing the width of the CMZ in this location

Underground drilling encounters more high grade with hole SPUD-018 intersecting 3.60 metres grading 24.37 g/t gold, 0.28 g/t platinum and 0.88 g/tpalladium


Claudio Mancuso, CEO of Colossus commented, "We are pleased that despite poorer than anticipated drill performance, the results demonstrate localized increases in the width of the CMZ. We are further pleased to be able to establish more effective drilling stations closer to the CMZ, which will increase the pace of delineation drilling and assist with mine planning."
 
http://goldhills.com.br/uploads/serra_do_sereno.pdf
 
Ich habe hier ein Originalpaper zu dem zitierten Buch von Huckabee vorliegen. 360t ist falsch.

Es geht in dem Paper um Quecksilberverschmutzung. Pro kg Gold entstehen 0.8 kg Hg und Huckabee geht von 360t Hg aus. Die Annahme ist, daß nur 10% des Au offiziell registriert wurde, inoffiziell also von 1980-1986 450t gefördert wurden.

Mal ehrlich: das ist auch nur logisch, denn wo sonst gab es so etwas wie Serra Pelada? Nirgendwo. Das kann nur den Grund haben, daß die Erzgrade dort so außergewöhnlich hoch waren. Es wird jedenfalls keine 3g/t beinhaltet haben.

Kegelvolumen 1/3 G*h
Serra Pelada Pit: ca. 350m Durchmesser, 110m Tiefe. Spezifisches Gewicht Gestein ca. 2.8 t/cbm.
10 mio Tonnen.
450 t Gold = 14.5 mio ozs

1.5 oz/t

Selbst bei Verwässerung und einem Auflösen des Vorkommens fast in Luft ist der jetzige Kurs gerechtfertigt. 2 mio ozs = 5-10 Bagger. Aber daß Potential für 10 mio ozs da wären, das ist der Hammer.

14.5 mio ozs historische Produktion bei 1.5 oz/t sind pures Rätselraten, aber nicht ganz von der Hand zu weisen. Es geht mir um die Größenordnung, Abweichungen vom 3-fachen mögen drin sein, aber nie und niemals waren es nur 2 mio ozs.

Man sollte hier auf spektakuläre bulk sample Resultate setzen. Colossus und Sandstorm könnten Barrick und Franco-Nevada beerben. Alles noch ein pipe dream, aber einer für den man nichts zahlt.

Goldseiten!
 
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