Update - El Aguila

Horizonte Minerals PLC
19 March 2007


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

19 March 2007


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

                Defines Strong Geophysical Targets at El Aguila


Horizonte Minerals plc, the AIM listed exploration and development company
focused on Brazil and Peru, is pleased to announce the definition of four new
geophysical and geochemical targets on its 100% owned El Aguila
silver-lead-zinc-gold project, located in the Cerro de Pasco mining district,
central Peru. At Pacos Hill the survey indicates a strong chargeability / low
resistivity anomaly adjacent to the known mineralised zone. The untested broad
anomaly represents a new target that if associated with economic mineralization,
would add significant tonnage potential to the project. Additional geophysical
targets were also defined at Zona Sur and reconnaissance rock chip sampling has
identified a new target zone east of Pacos Hill.


Following the successful drilling programme completed at the Pacos Hill area in
October 2006, Horizonte undertook a geophysical survey comprising ground
magnetics and Induced Polarization (IP) over the Pacos Hill and Zona Sur zones
with the objective of optimising the next phase of drilling.  A total of 48.9 km
of magnetic profiles were measured and 7.1 km of IP measurements were recorded
on 50m spaced centres on north south lines.  At the same time, detailed mapping
and rock geochemical sampling was completed in the area around Pacos Hill and
over Zona Sur.


Zona Sur

Three strong IP anomalies were defined in the previously undrilled Zona Sur
area, interpreted as occurring at between 100m and 250m depth, correlating with
mineralisation and alteration mapped on surface.



•  Target 1 lies at approximately 100m depth and coincides with high grade
   surface copper-lead-silver veins.

•  Target 2 occurs at 150m depth and is associated with a NW/SE trending
   fault and the SW dipping Mitu rock formation. The surface expression is 
   marked by extensive faulting and fracturing of the host Pucara Limestone.

•  Target 3 is a chargeability anomaly at circa 250m that appears to be
   directly related with mapped veins - Vicky and Marlene.  Near the surface the
   anomaly is weak but strengthens at depth where the mineralised veins 
   intersect the NW/SE fault.


Geochemical rock samples taken from the two underground workings in the Zona Sur
demonstrate higher grades of silver than in the Pacos Hill area together with
copper and gold possibly indicating closer to source intrusive.  The average
grade of 7 channel samples taken along 230m extent of the Veta Marlene returned
0.24g/t Au, 10.24 oz/t Ag, 4% Pb and 5.6% Zn.


Pacos Hill

Five IP north-south orientated lines with a total length of 4.6 km were run over
the Pacos Hill zone.  The data generated indicates that both Veta Sur and Veta
Norte, the focus of the October 2006 drilling programme, are outboard of the
main geophysical anomaly.  A significant chargeability anomaly on line 00
between 50m and 150m depth is located to the south of the principle veins.  One
drill hole from the October 2006 programme, HM DDH-11, tested the area south of
the veins. It returned 16.6m grading 64g/t silver ('Ag'), 1.9% lead ('Pb') and
0.9% zinc ('Zn').  While this hole only reached a vertical depth of 45m and was
outboard of the geophysical anomaly, it indicates the mineralised system extends
to the south..


Follow-up mapping and sampling to the east of the Pacos Hill target has outlined
a zone of alteration and vein mineralisation with values of 5.9% Pb and 12.7% Zn
(RK-6929).


Horizonte CEO Jeremy Martin said, 'The results of the IP survey have upgraded
the Zona Sur area. It indicates that the high grade veins on surface may be
associated with a larger replacement system at relatively shallow depths. The
geophysics has certainly provided greater focus to the system. The new
geochemical values from the underground workings demonstrate the very high
grades of silver found in the Zona Sur are significantly higher than at Pacos
Hill where we completed the drilling in the latter part of last year.  We will
fast-track the drilling in the Zona Sur to test these targets.


'At Pacos Hill the October 2006 drilling demonstrated the economic potential of
the Veta Norte and Sur replacement vein systems.  However the geophysics
indicates that the drilling was outboard of the main geophysical target area,
which appears to lie at depth and to the south.  This opens up the tonnage
potential in the Pacos Hill area.'


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 six 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 mineral resources exploration group
focused on the discovery, appraisal and development of gold and base metal
deposits in Brazil and Peru.  The Group has two gold exploration projects in
Brazil, and one silver-zinc-lead project in Peru. The two Brazilian gold
projects, Tangara and Falcao, are located to the south of the highly prospective
Carajas Mineral Province. Both projects cover an area of approximately 300 sq km
and are centred over greenstone belts, with known gold mineralisation. The scale
of these project areas, the overall aerial extent of the mineralised system and
the high density and magnitude of related gold anomalies (identified in river
sediments, surface soils and rocks), indicate the potential for multiple deposit
discoveries. The silver-zinc-lead project is located in the historic mining
district of Cerro de Pasco in Central Peru. Sampling and limited historic
drilling on this project has demonstrated the high grade potential of this
project. The Group has a joint venture with Australian gold producer Troy
Resources NL's 70% owned local subsidiary Sertao Mineracao Ltda to advance its
Goias Velho gold exploration project in Brazil.


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