MONTREAL, QUEBEC–(Marketwire – Nov. 19, 2007) – SIRIOS RESOURCES INC. (TSX VENTURE:SOI) discovered numerous new areas with molybdenum mineralization on its Tilly property, James Bay, Quebec. Ten new areas, including six main ones each comprising many molybdenum-copper-silver-gold-(bismuth) showings, were discovered in granitic rocks in addition to the showings previously found by Sirios. A total of 327 grab rock samples were collected from 602 surveyed outcrops with grades up to 4.36% Mo, 6.4% Cu, 201 g/t Ag, 0.6 g/t Au and 0.22% Bi. Seventy-five samples graded either more than 394 ppm (or 0.039%) molybdenum or 357 ppm copper.

The new showings are commonly associated with, or close to, hydrothermal breccias varying in length from 600 to 1,000 meters and from 50 to 100 meters in width. They comprise mainly molybdenum and/or chalcopyrite mineralization associated with quartz veinlets or veins or finely disseminated. These mineralizations are part of a significant porphyry system.

The President of Sirios, Dominique Doucet, states: “The numerous mineral occurrences on the property show high potential for the discovery of a low grade but high tonnage world class porphyry deposit similar to Spinifex Ridge in Australia (469 Mt : 0.06% Mo, 0.09% Cu, 1.7 g/t Ag) and Climax in Colorado, USA (907 Mt : 0.24% Mo)”. (i)Mt: Million of tonne.

The significant assay results by area are given below while the main mineralized areas are summarized in the following table :


 Area                  Size     sign./                      Maximum grades
                               total
--------------------------------------------------------------------------
Calimero         300m. X 75m.   9/12   4.20%Mo, 6.4%Cu, 201g/tAg, 0.6g/tAu,
                                                                   0.22%Bi
--------------------------------------------------------------------------
Silly Cat       1,1km X 400m.  16/27            4.36%Mo, 0.24%Cu, 7.6g/tAg 
--------------------------------------------------------------------------
Calimero E-S    1,4km X 300m.  14/38           0.06%Mo, 0.78%Cu, 78.4g/tAg
--------------------------------------------------------------------------
Spotty Moly     400m. X 100m.   7/12                      3.17%Mo, 0.24%Cu 
--------------------------------------------------------------------------
Fer a cheval    700m. X 450m.  10/21           0.88%Mo, 0.57%Cu, 51.7g/tAg
--------------------------------------------------------------------------
Ozzy East-South 500m. X 500m.   8/22  0.79%Mo, 3.8%Cu, 0.8g/tAu, 14.4g/tAg,
                                                                  0.1%W
--------------------------------------------------------------------------
4 other areas      variable    11/17 2.87%Mo, 0.48%Cu, 0.4g/tAu, 12.2g/tAg, 
                                                                  0.1%Bi
--------------------------------------------------------------------------

sign./total : number of significant samples with Mo greater than 394 ppm or Cu greater than 357 ppm out of the total number of samples collected in the related area.

During the summer and fall of 2007 the following work was completed on the property :

-185 km of 200 meters-spaced line cutting ever all the property,

-systematic prospecting and mapping, 362 rock samples collected including 35 with pending results, -induced polarization (I.P.) geophysical survey (dipole-dipole and gradient) totaling 185 km.; pending results.


Rock assays results by area           :
Calimero Breccia
-----------------------------------------------------
 sample #      Mo ppm  Cu ppm    Au ppb    Ag  Bi ppm
                                          g/t
-----------------------------------------------------
 718              135     999         6   1.7       3
-----------------------------------------------------
 719            9,580     399       297   8.3      88
-----------------------------------------------------
 720            5,780   9,310       609  42.9     249

-----------------------------------------------------
 721            3,990     800        76   5.2      38
-----------------------------------------------------
 723              429   1,345       309  22.3     145
-----------------------------------------------------
724                33  64,000       553 201.0   2,200
(ii)
-----------------------------------------------------
                              less than 
 725                2     357         1   1.3       9
-----------------------------------------------------
 726              471   2,090       223  14.7     145
-----------------------------------------------------
 727           42,000   2,040       106   5.5      35
-----------------------------------------------------
ppm : parts per million         10,000 ppm  equals  1%
ppb : parts per billion         1,000 ppb  equals  1 ppm  equals 1g/t
(ii)(0.5 m. quartz vein)

Silly Cat
---------------------------------------
 Ech #         Mo ppm  Cu ppm    Ag g/t
---------------------------------------
 420            5,400     786       2.4
---------------------------------------
 421            9,520     423       3.0
---------------------------------------
 422            2,630     157       0.9
(i)
---------------------------------------
 427            8,790   1,040       5.0 
(i)
---------------------------------------
 428            4,220      78       0.3
---------------------------------------
 430            4,590      73       1.1
---------------------------------------
                              less than 
 431              823      74       0.2
---------------------------------------
                              less than 
 432            2,970      25       0.2    
---------------------------------------
 434            7,660   2,440       7.6       
---------------------------------------
                              less than 
 437            1,690      58       0.2
---------------------------------------
 438           28,700      74       0.4      
---------------------------------------
 439           21,200     957       9.9      
---------------------------------------
 441           43,600     230       1.9
---------------------------------------
 442            6,510      98       1.7
---------------------------------------
 445            3,030      14       0.3
---------------------------------------
 446            4,500      11       0.4
---------------------------------------
(i) boulder                              


Calimero - South
-----------------------------
Ech #    Mo ppm Cu ppm Ag g/t
-----------------------------
420       5,400    786    2.4
-----------------------------
421       9,520    423    3.0
-----------------------------
422       2,630    157    0.9
(i)
-----------------------------
427       8,790  1,040    5.0
(i)
-----------------------------
428       4,220     78    0.3
-----------------------------


Calimero - East
-----------------------------
Ech #    Mo ppm Cu ppm Ag g/t
-----------------------------
302           6  3,830    7.0
-----------------------------
305         394    118    0.3
-----------------------------
365          24  3,340   78.4
-----------------------------
367          20  1,980    4.6
-----------------------------
368         136  1,080    2.6
-----------------------------
375         577  3,400   20.4
-----------------------------
378         143  1,170    4.5
-----------------------------
729         376    583    6.8
-----------------------------
730          51  1,195   22.5
-----------------------------



Spotty Moly               
-------------------------
 Ech #     Mo ppm  Cu ppm                
-------------------------
 395       31,700      83                   
-------------------------
 396        2,130      79                   
-------------------------
 397        4,870      69                  
-------------------------
 398       29,000     102                  
-------------------------
 400        8,950      51                  
-------------------------
 403        2,530     144                   
-------------------------
 405       2,090    2,450                  
(i)
-------------------------
(i) boulder                               


Fer a cheval
-----------------------------
Ech #  Mo ppm  Cu ppm  Ag g/t
-----------------------------
348     5,210   1,240     8.1
-----------------------------
410     3,180     190     0.7
-----------------------------
416     8,790   1,970    20.4
-----------------------------
418     2,170   5,700    51.7
(i)
-----------------------------
419     6,480     595      22
(i)
-----------------------------
475        50   5,670    14.6
-----------------------------
476        48     450     1.8
(i)
-----------------------------
477       109   1,080     4.4
(i)
-----------------------------
478     1,580   2,020     2.0
-----------------------------
604     1,810      88     0.9
-----------------------------
(i) Boulder

Ozzy - East - South     
-----------------------------------------
Ech #   Mo ppm   Cu ppm   Au ppb   Ag g/t 
-----------------------------------------
144      7,950    1,095       63      2.1 
-----------------------------------------
145        301    1,300        9      7.6
-----------------------------------------
146        164    2,370       71      7.4
-----------------------------------------
335      4,690        8        4      0.8
-----------------------------------------
390       108   38,100      803     14.4
(i)
-----------------------------------------
391         6    1,150       21      2.1
(i)
-----------------------------------------
384        561    1,465       21      2.4
-----------------------------------------
393      4,080      725      154      9.5
-----------------------------------------
(i) boulder

All rock samples were sent to ALS-Chemex Val D’Or laboratory, using atomic absorption technique for gold and ICP for all other elements. Industry-standard quality controls were applied, including blank, standard and duplicate inserts in the sample series.

Between 1997 and 2001, SIRIOS realized the first significant molybdenum discovery of James Bay area, Quebec on its TILLY property at the same time it recognized an important porphyry complex with the following significant results:

Firecracker showing :

– average of 0.14% Mo for a total of 89 m linear channel sampling.

– drill hole Ti-2000-03 : 0.05 % Mo over 46 m including 0.28 % Mo over 7 m.

– drill hole Ti-2000-04 : 0.08 % Mo over 51 m including 0.14 % Mo over 23 m.

Yo showing:

– drill hole Ti-2000-01 : 0.07 % Mo over 85 m including 0.18 % Mo over 24 m.

– Channel R-2000-02N : 0.11 % Mo and 0.12 % Cu over 13 m.

– Channel R-2000-01 : 0.05 % Mo over 13 m.

– Channel R-2000-01S : 0.47 % Mo over 3 m.

Boubou showing :

DDH Ti-2000-05 : 0.44% Mo and 0.13 g/t Au over 3 m.

This press release was prepared by Dominique Doucet, P. Eng., President of Sirios, Qualified Person.

The TSX Venture has not reviewed and does not accept responsibility for the adequacy or accuracy of this release.

 

For more information:
Dominique Doucet, CEO
ddoucet@sirios.com
Phone: 514-510-7961

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