Physical, chemical and mineralogical characteristics of commercially available Eppawela and Gafsa rock phosphates
Date
1995
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
Rubber Research Institute of Sri Lanka. Agalawatta
Abstract
Physical, chemical and mineralogical characteristics of commercially available Eppawela rock phosphate (ERP) was compared with a well known rock phosphate, Gasfa from Tunisia. The phosphate content of Eppawela material was low, around 16% and is two times lesser than Gasfa. Also, the extractable P in ERP was two times lesser than that of Gasfa, indicating its inferiority as a P source. A high amount of silica was present in the Eppawela material as an impurity and it therefore requires to ensure the quality control measures in a systematic way before it is marketed.
Description
Keywords
Agriculture, Fertilizers, Chemical analysis, X-ray diffraction, X-ray fluorescence, Chemical composition, Mineralogical composition, Gafsa rock, Phosphates
Citation
Bulletin of the Rubber Research Institute of Sri Lanka32(1)pp.5-13