Sienna Reports Its Best Ever Drill Results: 3.1 Meters (M) at 38.5 Grams Per Tonne Gold (G/T) and 193.5 G/T Silver Within 17....

Sienna Gold Inc. ("Sienna" or the "Company") (TSX VENTURE:SGP) (LMA:SGP) is very
pleased to announce results from the latest drill holes at Callanquitas on the
Igor project, La Libertad, Peru. The four holes totalled 914.3 meters (m).


The best results are from Hole CA-12-30 which returned 3.1 m at 38.5 g/t gold
and 193.5 g/t silver within an overall interval of 17.3 m at 11.9 g/t gold and
60.1 g/t silver. This drill hole also returned the highest grade sample recorded
in drill core at Igor: 0.5 m at 63.1 g/t gold and 79.2 g/t silver. 


Two other holes also gave excellent results. CA-12-29 gave 12.5 m at 7.8 g/t
gold. Hole CA-12-31 included one intersection with 5.5 m at 7.7 g/t gold and 683
g/t silver. Full results are given in the table below.


Drill holes CA-12-29, 30 and 31 are from the oblique section that contains drill
hole CA-11-08, the best drill hole from the 2010-2012 campaign. This section is
shown below. Further maps and cross sections are available on the Sienna Gold
website.


To view the map associated with this release, please visit the following link:
http://media3.marketwire.com/docs/416sienna_map.pdf 


The Callanquitas Structure

Dr. Warren Pratt, Director of Sienna Gold Inc, comments:

"These are the best results Sienna Gold has ever obtained. They extend
northwards the high grade zone in the central part of the Callanquitas
Structure. Within this zone, drill holes, spaced at 50 m intervals, consistently
cut high grade gold and/or silver. We see vertical continuity in the
mineralization, extending from surface to at least 400 meters depth. This
mineralization, as on all other sections drilled to date, is open at depth. 


Now is a good time to emphasize the many positive features of the Callanquitas
Structure: 1) it is remarkably continuous (over 900 m strike length and at least
400 m deep); 2) favorable topography for potential underground mining; 3) unlike
most low-intermediate sulfidation epithermal gold/silver deposits, the grades
are not restricted to a narrow (1-2 m) vein. Instead they occur in a broader
zone with a true thickness of 5-20 m. Lower grades and additional mineralized
structures occur outside this zone; 4) much of the mineralization is strongly
oxidized; 5) mineralization appears zoned, with relatively constant gold, but
increasing silver, at depth.


We will continue to focus on these high grade zones and are on track to produce
a resource estimate before year-end. To this end, we are also pleased to have
retained the services of Robert Sim and Bruce Davis. Sim and Davis have worked
on numerous base and precious metal deposits worldwide. Recently they
implemented and monitored the QAQC program for Ventana Gold's La Bodega project
and acted as the qualified persons responsible for the La Bodega resource
estimate."




Assay results for drill holes CA-12-28 to CA-12-31 (and CA-11-08 from press 
release dated 14 June 2011)                                                 
----------------------------------------------------------------------------
Drill Hole             From        To    Interval    Weighted Averages(2)   
----------------------------------------------------------------------------
                         (m)       (m)     (m)(1)    Gold (g/t)     Ag (g/t)
----------------------------------------------------------------------------
                                                                            
----------------------------------------------------------------------------
CA-10-08             206.75     241.8       35.05          1.6        243.1 
----------------------------------------------------------------------------
Including            230.95     234.8        3.85         13.0       2099.4 
----------------------------------------------------------------------------
                                                                            
----------------------------------------------------------------------------
CA-12-28                 64      71.3         7.3          1.1         20.6 
----------------------------------------------------------------------------
including              70.7      71.3         0.6          4.1        148.0 
----------------------------------------------------------------------------
CA-12-28              115.5     124.7         9.2          1.1          2.3 
----------------------------------------------------------------------------
including             117.1     118.7         1.6          2.4          2.5 
----------------------------------------------------------------------------
                                                                            
----------------------------------------------------------------------------
CA-12-29                 81     113.6        32.6          3.6         11.2 
----------------------------------------------------------------------------
including              90.3       108        17.7          6.4         17.6 
----------------------------------------------------------------------------
including              95.5       108        12.5          7.8         16.2 
----------------------------------------------------------------------------
                                                                            
----------------------------------------------------------------------------
CA-12-30             179.35    196.65        17.3         11.9         60.1 
----------------------------------------------------------------------------
including             184.7     190.1         5.4         29.0        117.3 
----------------------------------------------------------------------------
including             185.7     188.8         3.1         38.5        193.5 
----------------------------------------------------------------------------
                                                                            
----------------------------------------------------------------------------
CA-12-31              272.5     276.5           4         0.04         48.2 
----------------------------------------------------------------------------
CA-12-31             283.15     315.6       32.45          2.1        168.4 
----------------------------------------------------------------------------
including            297.35     312.5       15.15          4.2        261.2 
----------------------------------------------------------------------------
including             301.5       307         5.5          7.7        683.2 
----------------------------------------------------------------------------
1. It should be noted that these are all angled holes and down hole         
   intervals do not necessarily reflect the true width of the mineralized   
   structure.                                                               
2. Weighted averages were calculated for continuously mineralized intervals 
   using a bottom cut on 0.1 - 0.2 g/t gold, no top cut and minimum internal
   waste.                                                                   



A full list of drill holes and significant intercepts is available on the
website: www.siennagold.com.


Exploration Update

Two rigs continue on site: one large tracked rig and a man portable rig. A total
of 7900 m has been drilled to date, as part of the current campaign of
10,000-12,000 m for Callanquitas and 3,000 m for Domo and Tesoros.


A new NI 43-101 resource calculation is planned for late 2012.

Sampling Methodology

Cores taken from the diamond drill rig are stored in plastic core boxes and
transported to the camp for detailed logging. Afterwards, the core is cut on
site with a diamond saw.


One half is then sent to an accredited laboratory in various sample lengths.
Randy Henkle (PGeol), the Company's independent Qualified Person, completed a
chain of custody review to ensure the integrity of all sample data.


Assaying Methodology

The samples are analysed by SGS Laboratories in Lima by inductively coupled
plasma atomic emission spectroscopy for silver and 37 other elements (included
Hg and Te) and a 30 gram fire assay technique for gold. Samples above detection
limits are re-assayed using a gravimetric fire assay. The specific lab
procedures can be found in the Company's 43-101 report on the Igor property.


This press release was reviewed and approved by Dr. Warren Pratt (CGeol) who is
a "Qualified Person" according to National Instrument 43-101.


Sienna Gold Inc. is a gold exploration company with property interests in Peru.
Its key prospect is the Igor Mine Project, a formerly producing mine that the
Corporation plans to explore further.


If you wish any further information, please feel free to contact John Rucci at
any of the contact points noted above.


John M. Rucci, President

Statements in this press release regarding the Company's business which are not
historical facts are "forward-looking statements" that involve risks and
uncertainties, such as estimates and statements that describe the Company's
future plans, objectives or goals, including words to the effect that the
Company or management expects a stated condition or result to occur. Since
forward-looking statements address future events and conditions, by their very
nature, they involve inherent risks and uncertainties. Actual results in each
case could differ materially from those currently anticipated in such
statements.
Peruvian Precious Metals Corporation (TSXV:SGP)
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