Bayóvar

BAYÓVAR (EN: Bayóvar; RU: Байовар), Sechura (Sechura), is the unique by the reserves of phosphorites deposit within Peru, within the central part of the Sechura desert, near the Pacific coast.

It has been discovered during the 1958. The phosphorites are associated with the marine Miocene sedimentary depositions, which are prevalent within the peripheral part of the continent, namely, within the province of the Andes and of the modern oceanic coastal shelf. The thickness of the productive horizon is approximately 40 metres. The layers of the phosphorites (1-1.5 metres) are very orderly by their thickness, are formed by the phosphatic grains, by the phosphatized detritus of the marine organisms, and by the argillaceous-siliceous-carbonatic basic mass, which is weakly cementing them. There are within the roof of the horizon the carbonate-terrigenous rocks with the thickness of up to 12 metres. The reserves of the phosphorites are 1500 million tonnes, including approximately 593 million tonnes of the explored ones, with the content of P2O5 from 5% to 31% (mostly from 8% to 15%). The deposit is suitable for the open pit development. The stripping ratio of the thickness of the overburden to the useful stratum is 1:5 on average. There is planned the construction of the mining-beneficiation enterprise with the annual extraction of approximately 1.5-2 million tonnes of ore, and with the production of 850 thousand tonnes of the phosphoritic concentrate with the content of P2O5 of up to 34%.