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File: 2012 Dec 20 - Mansfield Announces Results of AGM and New Director.doc


Mansfield Announces Results of
Annual General Meeting and New Director

Vancouver, British Columbia - Mansfield Minerals Inc. (TSX.V - MDR) 
December 20, 2012
NR - 12-06

Mansfield Minerals Inc. (the "Company" or "Mansfield") is pleased to provide the results of its Annual General Meeting
---> of shareholders, held on December 19, 2012 in Vancouver, BC (the "Meeting"). At the Meeting, shareholders voted in fa
--->vour of motions electing the Company's directors: Paul Matysek, David Keough, David Raffa, John M. Leask, Gordon P. Le
--->ask, Megan Cameron-Jones and Alexander Molyneux.  Shareholders also passed a special resolution to approve the change 
--->of the Company's name to Goldrock Mines Corp. which will take effect in the New Year.

Immediately following the Meeting, the Board appointed the following officers: Paul Matysek as President and CEO, Davi
--->d Keough as COO, Jorge Kesting as VP, Exploration and Megan Cameron-Jones as Corporate Secretary.
Paul Matysek, President and CEO, commented, "We welcome the addition of Alexander Molyneux to the Board.  Alex brings 
--->considerable knowledge, experience, and success in executing mining related debt and equity financings. I look forward
---> to working with him on the development and financing of the Lindero Gold Project."

Mr. Molyneux is a well known China-based mining executive and financier.  He currently serves as Executive Chairman of
---> Celsius Coal Limited (ASX:CLA), Chairman of Azarga Resources Limited (private) and has served as a Non-Executive Dire
--->ctor of Ivanhoe Energy Inc. (TSX:IE, NASDAQ:IVAN) since mid-2010.  From 2009 to mid-2012, Mr. Molyneux was President, 
--->Chief Executive Officer and a Director of SouthGobi Resources Limited (TSX:SGQ, HKEX:1878).  Under his leadership, thi
--->s company raised in excess of US$900 million from Aisan sovereign wealth funds and a public listing in Hong Kong. It s
--->ubsequently became the largest foreign operator in the Mongolian coal sector.  Prior to joining SouthGobi, Mr. Molyneu
--->x was the Hong Kong based Managing Director, Head of Metals and Mining Investment Banking, Asia Pacific with Citigroup
--->.  In his position as a specialist resources investment banker he spent approximately 10 years providing advice and in
--->vestment banking services to mining and industrial corporations.  Mr. Molyneux has advised on public offerings, merger
--->s and acquisitions, bond and debt offerings totaling several billion dollars.  Mr. Molyneux holds a Bachelor degree in
---> Economics from Monash University in Australia and attended Nanjing Normal University in China for Chinese language st
--->udy.  He is a member of the Canadian Institute of Corporate Directors.

The Company also announces that incentive stock options have been granted to directors to purchase up to 325,000 commo
--->n shares at a price of $0.70 per share for a three-year period, pursuant to its Stock Option Plan.

ON BEHALF OF THE BOARD OF DIRECTORS,

"Paul Matysek"

Paul Matysek, M.Sc., P.Geo
President and CEO

For additional information
Paul Matysek, President & CEO
(604) 681-4462   pm@mansfieldminerals.com

______________________________________________________________________________________

About Mansfield Minerals Inc. 

Mansfield Minerals Inc. is a Canadian-based explorer and developer focusing on the development of the Lindero gold dep
--->osit and the exploration of the adjacent Arizaro gold-copper porphyry prospect located within its 100% owned Lindero p
--->roject, Salta province, northwestern Argentina.  A feasibility study on the Lindero deposit has been commissioned with
---> completion anticipated in early 2013.  This final feasibility study will be based on a heap leach gold mine operating
---> at approximately 15,000 tpd using a higher cut-off grade of 0.4 grams/tonne Au, increasing average grades early in th
--->e production schedule and lowering initial capital requirements.  Different production options are being assessed from
---> a standard 10 year life of mine production plan to more selective mining approaches that would allow for initial proc
--->essing of higher grade ore at reduced throughput, to reduce initial capital cost, followed by scaling up of the operat
--->ion utilizing the early project cash flow.

The Company has retained Kappes Cassiday and Associates as lead consultant in collaboration with AMEC Americas Limited
--->, Mine Development Associates, Seegmiller International and American Au Ag Associates to produce the full feasibility 
--->study. 

The current NI 43-101 reported Measured and Indicated resources (at a 0.4 grams/tonne Au cut-off) for the Lindero depo
--->sit is 71.9 million tonnes grading 0.74 grams/tonne Au, containing 1.71 million ounces of gold. (see news release date
--->d March 22, 2010).

The Company has been granted the environmental permit (DIA, Declaracion de Impacto Ambiental) by the Salta Provincial 
--->Government allowing the Company to develop the Lindero open pit, heap leach gold mine. This is the primary permit requ
--->ired for project development. The Company intends to aggressively move to finance and build the project following comp
--->letion of the feasibility study.
David Keough FAusIMM(CP) of Mansfield Minerals Inc. is a "qualified person" as such term is defined in National Instru
--->ment 43-101 (Standards of Disclosure for Mineral Projects) and has reviewed and approved the technical information and
---> data included in this press release.

Neither the TSX Venture Exchange, nor its Regulation Services Provider accepts responsibility for the adequacy or accu
--->racy of this release.

Caution Regarding Forward-Looking Statements 

This press release includes certain statements that may be deemed "forward-looking statements".  All statements in thi
--->s discussion, other than statements of historical facts, that address future exploration drilling, exploration activit
--->ies, anticipated metal production, internal rate of return, estimated ore grades, commencement of production estimates
---> and projected exploration and capital expenditures (including costs and other estimates upon which such projections a
--->re based) and events or developments that the Company expects, are forward looking statements.  Although the Company b
--->elieves the expectations expressed in such forward looking statements are based on reasonable assumptions, such statem
--->ents are not guarantees of future performance and actual results or developments may differ materially from those in f
--->orward-looking statements.  Factors that could cause actual results to differ materially from those in forward-looking
---> statements include metal prices, exploration success, continued availability of capital and financing, and general ec
--->onomic, market or business conditions.  Accordingly, readers should not place undue reliance on forward-looking statem
--->ents.

This news release and the information contained herein does not constitute an offer of securities for sale in the Unit
--->ed States and securities may not be offered or sold in the United States absent registration or exemption from registr
--->ation.