Niobium, a rare mineral primarily used to improve steel alloys, and of which Brazil is the world's main producer has seen prices relatively stable. Last year Brazil exported some 90% of its production, 86,3 thousand tons, equal to US$ 2,25 billion.
A consortium of five Chinese companies has acquired a 15% stake in Brazil's Companhia Brasileira de Metalurgia e Mineracao (CBMM), the world's biggest niobium producer, for 1.95 billion dollars in cash.