Farms-out Brazil gold project

Horizonte Minerals PLC
08 October 2007

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


8th October 2007


             Horizonte Minerals plc ('Horizonte' or 'the Company')
         Signs Option Agreement on its Mara Rosa Gold Project in Brazil


Horizonte Minerals plc, the AIM listed exploration and development company
focused on Brazil and Peru, has signed Heads of Agreement with Canadian company,
Amarillo Gold Corporation (TSX-V AGC) to develop its 1,000 Ha Mara Rosa gold
property in the Goias State of Brazil.  Under the terms of the agreement,
Amarillo can earn a 60% interest by expending US$400,000 on exploration over the
next three years. Subsequent to the earn-in, a 60:40 joint venture agreement
will govern the development of any major gold discoveries. In addition,
Horizonte will receive a one off cash payment of US$30,000 for data acquisition.

The Mara Rosa gold project was developed as part of Horizonte's generative
exploration programme initiated to develop a pipeline of early stage projects.
Initial reconnaissance exploration work, including stream and soil geochemical
sampling, defined a series of gold anomalies, which will now be targeted by
Amarillo.

The project is located adjacent to Amarillo's Posse gold deposit, which it
purchased in October 2003.  Previously the mine was developed by BHP Billiton
and Western Mining Ltd, and it is estimated to have produced in the region of
80,000 ounces of gold.

Due to the prospectively of the area, Amarillo has been actively exploring the
region.  From November 2005 until November 2006 it completed a 24 hole drilling
programme on the Posse deposit. This provided infill information on the known
mineralisation, but more importantly, discovered new gold mineralisation beneath
the North pit.  A 43-101 compliant mineral resource estimate was completed in
March 2007 by Caracle Creek International Consulting Inc. This reported an
Inferred mineral resource of 22,468,000 tonnes grading at 1.35 g/t Au for
974,000 ounces of contained gold with a 0.5 g/t Au cut off.

Horizonte CEO Jeremy Martin said, 'This is excellent value addition for one of
the Horizonte non core projects.  Mara Rosa is adjacent to the Posse gold
deposit actively being explored by Amarillo. By combining the projects, we
believe that we can significantly increase the possibility of expanding the
resources at Posse and developing an economic mining operation.  Importantly,
the deal is structured so that Horizonte will see further value in this
transaction when mining commences. I believe this is a good example of
exploration risk management and value enhancement while also allowing Horizonte
to focus on its core projects.'


Sampling, assaying, and QA/QC

Procedures adopted by Horizonte in the collection, preparation and storage of
samples from the auger drilling programme, conform to industry-wide best
practice and with chain of custody being observed for all samples. Analysis is
undertaken by ALS Labs at its laboratories in Vancouver, Canada, and the Company
maintains QA/QC on all analytical work via the inclusion of certified reference
materials and field duplicates and blanks, in addition to monitoring of the
laboratory's own internal check-analyses.

The above information has been reviewed and verified by Mr. Jeremy Martin, a
Director and Chief Executive of Horizonte, for the purposes of the Guidance Note
for Mining, Oil and Gas Companies issued by the London Stock Exchange in March
2006.  Mr. Martin, with seven years of mining and management experience,
graduated with a degree in geology from the Camborne School of Mines, and an MSc
in mineral exploration from the University of Leicester and is a member in good
standing with the Society of Economic Geologists and the Institute of Mining
Analysts.

                                  * * ENDS * *


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

Jeremy Martin/David Hall    Horizonte Minerals plc          Tel: [phone]
David Paxton                Hichens Harrison                Tel: [phone]
Hugo de Salis               St Brides Media & Finance Ltd   Tel: [phone]
John Frain/Fergal Meegan    Davy                            Tel: [phone]


Notes to Editors:

Horizonte Minerals Plc is an AIM listed exploration and development company
focused on gold, silver and base metal opportunities in Brazil and Peru. It aims
to become, through experience and a track record of discovery success, to become
the preferred exploration partner for Major gold and base metal mining
companies, in the region.

The Group's has two flagship gold exploration projects in Brazil, a one
silver-zinc-lead project in Peru as well as additional gold, zinc and nickel
exploration projects in Brazil. The two Brazilian gold projects, Tangara and
Falcao, south of the highly prospective Carajas Mineral Province each cover an
area of approximately 300 sq km and are centred over greenstone belts, with
known gold mineralisation. The scale of these project areas, early results, the
overall aerial extent of the mineralised system and the high density and
magnitude of related gold anomalies, indicate the potential for multiple deposit
discoveries.

The El Aguila silver-zinc-lead project is located in the historic mining
district of Cerro de Pasco in Central Peru. Drilling has demonstrated the high
grade potential of this project. Additional projects include the 4,660 hectare
on the prospective Achaean aged Crixas greenstone belt, where multiple
nickel-copper anomalies have been defined and the 25,556 hectare Lontra Ni
Project situated in the Araguaia mobile belt, which flanks the eastern margin of
the Carajas Mineral Province of northern Brazil.




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