Horizonte Minerals Regulatory News (HZM)

The following amends the Listing on Toronto Stock Exchange announcement released today under RNS number 5489I at 7.30 a.m.

The ordinary shares of the Company will commence trading on the TSX on June 17, 2011 and not June 16, 2011 as previously stated.

All other details remain unchanged and the full amended announcement appears below.

Horizonte Minerals plc / Index: AIM / Epic: HZM / Sector: Mining

16 June 2011

Horizonte Minerals plc ('Horizonte' or 'the Company')

Listing on Toronto Stock Exchange - Canada

Horizonte Minerals, the AIM quoted exploration and development company focused in Brazil, is pleased to announce that the ordinary shares of the Company have been approved for listing on the Toronto Stock Exchange ('TSX') and will commence trading at the open of the market in Toronto, Canada on June 17, 2011 under the symbol 'HZM'. The ordinary shares will continue to trade on the AIM market in London, United Kingdom under the symbol HZM.

Horizonte's CEO Jeremy Martin said, "The completion of the TSX listing represents another milestone in the Company's development since completing the transformational deal with Teck Resources acquiring the Araguaia nickel project in northern Brazil. The Board believes that the addition of the TSX listing is an appropriate platform from which to gain enhanced market exposure, and is confident that it will open up the North American capital markets to attract a wider institutional and retail following and in turn provide the Company with greater share liquidity. Notably, the move to the TSX, as a current recognised stock exchange, will also provide an opportunity for UK shareholders to benefit through holding the shares in an Individual Savings Account.

"The Company is entering an exciting period as it moves closer to upgrading its inferred mineral resource at Araguaia of 76.6Mt at 1.35% Ni towards a plus 100Mt resource and then taking the project forwards to Pre-Feasibility stage. In addition, there is an active gold portfolio in conjunction with our strategic alliance partner AngloGold Ashanti, and I believe Horizonte is in a solid position to hit its key milestones in 2011 and generate value for shareholders."

Marc-Antoine Audet, a qualified person under National Instrument 43-101, has supervised the preparation of the technical information in this press release.

The inferred mineral resources for the Araguaia project are based on the technical report prepared for the Company entitled "Geology and Mineral Resources of the Araguaia Nickel Project, Brazil NI 43-101 Technical Report" by Marc-Antoine Audet, James Hogg and Owen Mihalop dated May 15, 2011 (the "Technical Report"), filed on SEDAR at www.sedar.com. Further information in respect of the inferred mineral resources on the Araguaia project including, assumptions, parameters and methods used to estimate such mineral resources is included in the Technical Report.

**ENDS**

For further information visit www.horizonteminerals.com or contact:

Glossary

Investment Savings Account (ISA) - is a tax wrapper available to residents of the UK. By using an ISA an individual can invest in cash or longer-term investments such as stocks and shares or insurance and not pay tax on most of the income.

About Horizonte Minerals:

Horizonte Minerals plc is an AIM and TSX listed exploration and development Company with a portfolio of nickel and gold projects in the Carajas District of Brazil. The Company is focussed on creating value by generating and rapidly advancing exploration projects in tandem with joint ventures with major mining companies, providing mid-term cash flow, which is then used to develop the business and pipeline projects.

Horizonte has two committed major mining partners: Teck Resources Limited, a major strategic shareholder in the Company, and AngloGold Ashanti Limited, a JV partner on the gold portfolio.

Horizonte owns 100 per cent of the advanced Araguaia nickel project located to the south of the Carajas mineral district of northern Brazil.; the project has the potential to deliver a resource with size and grades comparable to other world-class projects in northern Brazil.

In addition, Horizonte and AngloGold Ashanti have a US$5.3 million exploration alliance to generate and develop new and existing gold targets within two areas of Brazil and a further JV with the major whereby AngloGold Ashanti can earn into 51% of the Falcao gold project by expending US$4.5 million over three years with the right to earn a further 19% by taking the project to Pre-feasibility Study.

Horizonte is well funded to accelerate the development of its core projects.

CAUTIONARY STATEMENT REGARDING FORWARD LOOKING INFORMATION

Except for statements of historical fact relating to the Company, certain information contained in this press release constitutes "forward-looking information" under Canadian securities legislation. Forward-looking information includes, but is not limited to, statements with respect to the potential of the Company's current or future property mineral projects; the success of exploration and mining activities; cost and timing of future exploration, production and development; the estimation of mineral resources and reserves and the ability of the Company to achieve its goals in respect of growing its mineral resources; and the realization of mineral resource and reserve estimates. Generally, forward-looking information can be identified by the use of forward-looking terminology such as "plans", "expects" or "does not expect", "is expected", "budget", "scheduled", "estimates", "forecasts", "intends", "anticipates" or "does not anticipate", or "believes", or variations of such words and phrases or statements that certain actions, events or results "may", "could", "would", "might" or "will be taken", "occur" or "be achieved". In addition, statements relating to "mineral reserves" or "mineral resources" are deemed to be forward-looking statements, as they involve the implied assessment, based on certain estimates and assumptions, that the mineral resources and mineral reserves described can be profitably mined in the future. Forward-looking information is based on the reasonable assumptions, estimates, analysis and opinions of management made in light of its experience and its perception of trends, current conditions and expected developments, as well as other factors that management believes to be relevant and reasonable in the circumstances at the date that such statements are made, and are inherently subject to known and unknown risks, uncertainties and other factors that may cause the actual results, level of activity, performance or achievements of the Company to be materially different from those expressed or implied by such forward-looking information, including but not limited to risks related to: exploration and mining risks, competition from competitors with greater capital; the Company's lack of experience with respect to development-stage mining operations; fluctuations in metal prices; uninsured risks; environmental and other regulatory requirements; exploration, mining and other licences; the Company's future payment obligations; potential disputes with respect to the Company's title to, and the area of, its mining concessions; the Company's dependence on its ability to obtain sufficient financing in the future; the Company's dependence on its relationships with third parties; the Company's joint ventures; the potential of currency fluctuations and political or economic instability in countries in which the Company operates; currency exchange fluctuations; the Company's ability to manage its growth effectively; the trading market for the ordinary shares of the Company; uncertainty with respect to the Company's plans to continue to develop its operations and new projects; the Company's dependence on key personnel; possible conflicts of interest of directors and officers of the Company, and various risks associated with the legal and regulatory framework within which the Company operates.

Although management of the Company has attempted to identify important factors that could cause actual results to differ materially from those contained in forward-looking information, there may be other factors that cause results not to be as anticipated, estimated or intended. There can be no assurance that such statements will prove to be accurate, as actual results and future events could differ materially from those anticipated in such statements. Accordingly, readers should not place undue reliance on forward-looking information. The Company does not undertake to update any forward-looking information, except in accordance with applicable securities laws.