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TORONTO, Nov. 24 /CNW/ - Amazon Mining Holding Plc (TSX-V symbol: "AMZ")
("Amazon" or the "Company") is pleased to announce it has staked a large
mineral occurrence of a potash bearing rock known as verdete slate
("Verdete"), which is believed to be uniquely suited to Brazil's fertilizer
needs. The Cerrado Verde project ("Cerrado Verde") consists of 84 claims
covering 165,069 hectares and is located on the western part of Minas Gerais
state, in the heart of the country's agricultural region.
The Cerrado Verde development focus is to achieve the economic recovery
of potash from sedimentary deposits of the Serra da Saudade Formation. The
main potassium-bearing minerals of Verdete are glauconite (a hydrated
potassium-iron silicate) and sericite (a monoclinic, basic potassium
aluminosilicate of the mica group), with K(2)O contents ranging from 5% to
14%.
VALE (formerly CVRD) controls a significant block of exploration licenses
adjacent to Cerrado Verde. VALE's properties were staked shortly after
Amazon's claims. The accompanying map shows each company's titles holdings;
Amazon's claims are labelled FVS for the Brazilian operating subsidiary.
Amazon controls the majority of the Verdete outcrop. (see
http://files.newswire.ca/760/cerrado_verde.pdf)
Thermo-Potash and Agricultural History
Amazon is investigating the viability of applying a pyrometallurgical
treatment process to deliver a semi-soluble thermopotash product or directly
combining the Verdete with a phosphate rock to create thermophosphate potash.
Pyrometallurgical treatment is commonly used in the production of high quality
phosphate. Amazon has been able to access 25 years of agronomical and
metallurgical studies from Brazilian Universities and Technological Centers
that suggest thermopotash is the ideal fertilizer product for Brazil's
nutrient poor, well drained acidic soils. Thermophosphate is a premium product
in Brazil and one that has been successfully marketed locally for over 40
years. It is recognized for its long retention time in soils, which is
important in an environment where heavy tropical rains often wash away, or
significantly dilute, highly soluble product nutrients such as KCl (potassium
chloride, most commonly used potassium mineral for fertilizer).
Research by Dr. Eichler (1983), Agronomic Engineer, showed that a mixture
of 50% Verdete and 50% magnesian limestone, heated at 1,100 degrees C ("TKL")
is an efficient source of potash. Importantly, TKL and KCl (which is imported
into Brazil from international markets), had equivalent yield impacts despite
the lower concentrations of potassium in the former. The thermopotash product
also had a longer residual impact on crops over successive plantings.
Studies made by Dr. Leite (1985), Agronomic Engineer and Dr. Valarelli et
al.