Sienna Gold Inc.
TSX VENTURE : SGP
BVLAC : SGP

September 20, 2011 12:20 ET

Sienna Gold Inc.: Surface Samples Confirm High Grade Gold & Silver Mineralization Along the Callanquitas Structure

CALGARY, ALBERTA--(Marketwire - Sept. 20, 2011) - Sienna Gold Inc. (TSX VENTURE:SGP) (BVLAC:SGP) is pleased to announce the results of recent surface sampling along the Callanquitas Structure on company's Igor project in Perú. It confirms the high grade gold and silver potential of the structure.

Sampling assay results

A total of 76 samples were collected along the main trend of the Callanquitas Structure. Of these, 42 were equal to, or greater than, 0.5 grams/ton (g/t) gold while 31 were equal to, or greater than, 1 g/t gold. Thirteen samples were equal to, or greater than, 31 g/t silver.

Most significant samples

Sample No Gold g/t (ounces) Silver g/t (ounces)
I237655 61.4 (1.97) 329 (10.5)
I237659 31.5 (1.01) 66.2 (2.1)
I237658 26.2 (0.84) 182 (5.9)
I237665 15.5 (0.49) 804 (25.9)
I237666 11.8 (0.38) 742 (23.9)
I008871 15.3 (0.49) 626 (20.1)

These samples lie along a 370 m section of the Callanquitas Structure as shown in the following figure.

To view Figure 1, please visit the following link: http://media3.marketwire.com/docs/920sienna.jpg.

Figure 1: Gold results from recent sampling along the central part of the Callanquitas Structure. Also shown are the previous sample locations and drill hole traces with their mineralized intercepts.

Sampling methodology

Sampling was carried out on surface outcrops, structures, and underground workings (adits). All samples are from areas not previously sampled.

Wherever possible, channel samples were taken. If this was not feasible, chip samples were collected. Each sample was between 2 to 3 kg in weight. Samples were collected under the supervision of a geologist from Sienna Minerals (a wholly owned subsidiary of Sienna Gold Inc.) who marked the areas and sections to be sampled, checked the sampling method, numbered the samples, and did the corresponding descriptions.

Rigorous QA/QC procedures have been followed during the sampling program with either a standard, blank or duplicate inserted every 9th sample. Samples were shipped to ALS Chemex in Trujillo and analyzed by ALS Chemex in Lima.

Assaying methodology

The samples were analyzed by inductively coupled plasma atomic emission spectroscopy for silver and 33 other elements and a 30 gram fire assay technique for gold. Samples above detection limits were re-assayed using a gravimetric fire assay technique. 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, a Director of Sienna Gold Inc., 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 Igor, a formerly producing mine that the Corporation plans to explore further.

Advisory

Certain statements and information contained in this press release, including but not limited to management's assessment of Sienna's future plans and operations, production, reserves, capital expenditure programs and debt levels contain forward-looking statements. In particular, this press release contains statements concerning the anticipated feasibility study and identification of drilling targets. All statements other than statements of historical fact may be forward looking statements. These statements, by their nature, are subject to numerous risks and uncertainties, some of which are beyond Sienna's control including the effect of general economic conditions, industry conditions, changes in regulatory and taxation regimes, volatility of commodity prices, escalation of operating and capital costs, currency fluctuations, the availability of services, imprecision of reserve estimates, geological, technical, drilling and processing problems, environmental risks, weather, the lack of availability of qualified personnel or management, stock market volatility, the ability to access sufficient capital from internal and external sources and competition from other industry participants for, among other things, capital, services, undeveloped lands and skilled personnel that may cause actual results or events to differ materially from those anticipated in the forward looking statements. Such forward-looking statements, although considered reasonable by management at the time of preparation, may prove to be incorrect and actual results may differ materially from those anticipated in the statements made and should not unduly be relied on. These statements speak only as of the date of this press release. Sienna does not intend and does not assume any obligation to update these forward-looking statements, whether as a result of new information, future events or otherwise, except as required by applicable law. Sienna's business is subject to various risks that are discussed in its filings on the System for Electronic Document Analysis and Retrieval (SEDAR).

Neither the TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in the policies of the TSX Venture Exchange) accepts responsibility for the adequacy or accuracy of this release.

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