Development of a new near infrared (NIR) tool for quantifying coffinite (USiO4) in a moderately complex uranium ore analogue

William L. Andrews, James Tardio, Suresh K. Bhargava, Andy Wilde, Alexander Otto, Mark I. Pownceby

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

The uranium ore mineral coffinite (USiO(4)mH(2)O) has previously been characterized using infrared spectral techniques however the spectral behavior of coffinite in relation to concentration and commo2nly associated mineral assemblages is poorly understood. This study addresses some uncertainties by quantifying the coffinite content in a series of 18 artificial mineral mixtures using near infrared (NIR). In the process, a limit of detection for coffinite was determined to be similar to 0.15 wt% (similar to 0.1% U3O8), with limits of quantification restricted by mixture composition and instrument capability. Methods defined in this study were applied to a metasomatic albitite uranium ore deposit where the presence of coffinite detected via NIR was validated by scanning electron microscopy (SEM) techniques.

Original languageEnglish
Pages (from-to)80-93
Number of pages14
JournalJournal of Geochemical Exploration
Volume182
DOIs
Publication statusPublished - Nov 2017
Externally publishedYes

Cite this