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O. A. Okunlola (2000) Process test work for the recovery of Ta concentrates from rare metal pegmatites, Nassarawa area, Central Nigeria. Global Journal of Geol., vol.1, No 1. pp 12-16.

has been cited by the following article:

• TITLE: Investigation of Dissolution Kinetics of A Nigerian Tantalite Ore in Nitric Acid

  AUTHORS: A. A. Baba, F. A. Adekola, O. I. Dele-Ige, R. B. Bale

  KEYWORDS: Dissolution Kinetics, Nigerian, Nitric Acid

  JOURNAL NAME: Journal of Minerals and Materials Characterization and Engineering, Vol.7 No.1, March 20, 2008

  ABSTRACT: A study of the kinetics of the dissolution of a Nigerian tantalite ore in Nitric acid has been examined. A detailed investigation on the quantitative leaching of the mineral was also carried out. The effects of some parameters such as acid concentration, contact time, temperature, particle size and the stirring rate on dissolution action have been investigated. Experimental results indicate that the dissolution rate is diffusion controlled via hydrogen ion [H+] action, with reaction order of 0.64. About 81.3% of tantalite ore was dissolved within 120min., using 8.06M HNO3 solution with 0, 2.55A0 and 1.74A00 The ore is not radioactive by its virtue of its very low thorium and uranium contents.