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Trace Element Determination of Single Fluid Inclusions in Quartz by Laser Ablation ICP‐MS
Author(s) -
McCandless Tom E.,
Lajack David J.,
Ruiz Joaquin,
Ghazi A. Mohammad
Publication year - 1997
Publication title -
geostandards newsletter
Language(s) - English
Resource type - Journals
eISSN - 1751-908X
pISSN - 0150-5505
DOI - 10.1111/j.1751-908x.1997.tb00676.x
Subject(s) - fluid inclusions , quartz , trace element , strontium , laser ablation , rubidium , analytical chemistry (journal) , chemistry , inductively coupled plasma mass spectrometry , mineralogy , inclusion (mineral) , carbonate , hydrothermal circulation , geology , laser , materials science , mass spectrometry , metallurgy , chromatography , potassium , physics , organic chemistry , seismology , optics
Single fluid inclusions in quartz from a Pb‐Zn‐Ag carbonate replacement deposit were selected for trace element determination by laser ablation ICP‐MS. Spikes in element intensities were noted between first breached fluids versus subsequent analyses, suggesting that accurate element concentrations may not be determined in smaller fluid inclusions when only one analysis is obtained before the fluid is exhausted. Elemental concentrations in the fluid inclusions were determined by external standardisation using solutions sealed in microcapillary tubes. Standards and single natural inclusion analyses give repeatabilities (%RSD) of ˜ 20% for Rb and Sr. Rubidium and strontium concentrations range from 0.56‐5.07 μg ml ‐1 and 1.12‐27.4 μg ml ‐1 , respectively, whereas Zn and Ag are below detection limits (< 10 ng ml ‐1 ). The results suggest that nearly all Zn and Ag are removed by the time hydrothermal fluids precipitate gangue minerals.