Araxá Phosphate/REE/Nb Project
Property
The phosphate project consists of four tenements covering 214 hectares of a carbonatite
in close proximity to the Municipality of Araxá in Minas Gerais State, and contains
Rare Earth Elements (REE) and Niobium mineralization (see map below). Phosphate
occurrences in the carbonatite were first discovered in the early 1950’s and the
tenement areas optioned to MBAC have been explored in the past by companies such
as Companhia Brasileira de Metalurgia e Mineração (“CBMM”) and Rhodia Group. The
area in which the project is situated hosts excellent infrastructure and is home
to one of the largest phosphate fertilizer producers in Brazil. Numerous blenders
and fertilizer distributors are also established in the region, which is commonly
referred to in the industry as the “fertilizer cluster” in Brazil.
For many years Vale and its predecessors as well as CBMM have been large scale producers
of Niobium and phosphate from carbonatite mines located in the same region. REE
and Niobium occurrences have been identified in the course of exploring the carbonatite
for phosphate and found to be concentrated to a greater extent in 70 to 80 hectares
that are centrally positioned in the Araxá Project area.
Summary of the Mineral Resource Estimate
The Araxá inferred mineral resource estimate is based on 35 diamond holes (3,485m),
68 auger holes (381m) and 43 pits (436m) drilled at a spacing of approximately 40m
by 40m. Only data received as at December 1, 2011 has been used in this estimate.
MBAC has an ongoing 3,000m infill and extensional diamond drill hole program underway
but no results are available from this phase of drilling.
The mineral resource estimate is focussed on an area of 480m by 240m which hosts
the majority of the 40m spaced drilling. Other wide spaced drilling has not been
included as the 200m spacing is too wide to allow sufficient geological confidence.
The majority of sample data was completed in mineralization at between 10m to 50m
in depth although there are limited diamond holes deeper than 40m vertical depth
and as such the footwall limit to the mineralization is poorly defined. All mineralization
is contained within saprolitic material and has been interpolated as a single mineralized
horizontal domain. The REO mineralization remains open in all directions.
The historical exploration data was assessed for its precision and accuracy where
possible. Only the Extramil series of diamond core holes was available to resample
but these holes had no immediate influence on the current inferred resource area.
The majority of the historical samples have hard copy assay certificates available
and have been analyzed in respected international laboratories. In addition, MBAC
completed 36 auger holes which were analyzed at SGS Geosol laboratory. The results
to these auger holes were compared to historical holes drilled within 15 metres
and moderate precision was found. The MBAC auger holes were submitted with two (2)
Geostats Pty Ltd certified REO standards and were returned acceptable accuracy.
The mineral resource has been classified by qualified person Beau Nicholls (BSc
(Geo) MAIG) principal consulting geologist for Amazon Geoservices Ltda (“Amazon
Geoservices”) in accordance with NI 43-101 effective as of December 2, 2011. The
inferred mineral resource estimate comprises of 2.7M tonnes with an average TREO
content of 8.39% (using a 6% TREO cut-off) and an average of 1.41% Nb2O5
and 9.91% P2O5
Future Exploration Target
An exploration target has been defined by existing 200m to 400m wide spaced diamond
drill holes with between 28Mt and 34Mt at between 4% TREO and 6% TREO. It is important
to point out that the potential quantity and grade of the exploration target is
conceptual in nature. There has been insufficient exploration to define a mineral
resource and it is uncertain if further exploration will result in the determination
of a mineral resource.
MBAC is currently drilling the deposit at 40 metre spacing in the REO mineralized
area aiming to define measured and indicated resources. The samples are being analyzed
via ICP-MS at SGS Geosol laboratory located in Belo Horizonte, Brazil. Current MBAC
drilling will analyze the full suite of rare earth elements.