Zirconium and niobium-bearing ilmenites from the Igaliko dyke swarm, South Greenland

Ilmenites from alkaline basic dykes in the Gardar province, south Greenland have Zr contents up to 3850ppm and Nb contents up to 1030ppm. These elements ubstitute for Ti in the octahedral site. These are amongst he highest recorded Zr and Nb contents for ilmenites, giving distribution coefficients (...

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Bibliographic Details
Main Author: N. J. G. Pearce
Other Authors: The Pennsylvania State University CiteSeerX Archives
Format: Text
Language:English
Subjects:
zirconium
niobium
ilmenite
Gardar province
Greenland
Igaliko dyke swarm
Igaliko
Online Access:http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.605.4878
http://www.minersoc.org/pages/Archive-MM/Volume_54/54-377-585.pdf
Description
Summary:Ilmenites from alkaline basic dykes in the Gardar province, south Greenland have Zr contents up to 3850ppm and Nb contents up to 1030ppm. These elements ubstitute for Ti in the octahedral site. These are amongst he highest recorded Zr and Nb contents for ilmenites, giving distribution coefficients (Kd ilmeniteJmatrix) for Zr up to 11.6 and Nb up to 70.3. Fractionation of ilmenite may thus have a dramatic effect on residual Zr and Nb contents. These effects are discussed in relation to the use of trace element tectonomagmatic d scrimination diagrams.

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