High precision Cl, Br and I determination in mineral standards using the noble gas method
Few techniques are available for analysis of the heavy halogens (Br and I) and characterisation of mineral standards for inter-laboratory comparison is desirable. This study illustrates the noble gas method for precise halogen measurement in neutron-activated samples by laser characterisation of four scapolite gems. The scapolites have Cl concentrations of 3.1-4.1wt.% and a range of Br/Cl and I/Cl ratios that are typical of crustal fluids. Each of the scapolites exhibits some heterogeneity...[Show more]
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